./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d9d31939acfea5ee9b43b1f06257671943c7251c27c351c5e445aa6495fd098 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:58:45,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:58:45,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:58:45,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:58:45,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:58:45,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:58:45,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:58:45,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:58:45,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:58:45,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:58:45,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:58:45,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:58:45,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:58:45,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:58:45,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:58:45,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:58:45,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:58:45,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:58:45,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:58:45,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:58:45,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:58:45,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:58:45,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:58:45,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:58:45,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:58:45,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:58:45,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:58:45,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:58:45,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:58:45,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:58:45,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:58:45,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:58:45,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:58:45,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:58:45,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:58:45,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:58:45,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:58:45,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:58:45,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:58:45,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:58:45,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:58:45,862 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:58:45,877 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:58:45,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:58:45,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:58:45,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:58:45,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:58:45,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:58:45,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:58:45,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:58:45,879 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:58:45,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:58:45,879 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:58:45,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:58:45,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:58:45,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:58:45,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:58:45,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:58:45,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:58:45,880 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:58:45,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:58:45,880 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:58:45,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:58:45,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:58:45,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:58:45,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:58:45,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:58:45,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:58:45,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:58:45,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:58:45,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:58:45,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:58:45,882 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:58:45,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:58:45,882 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:58:45,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:58:45,883 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:58:45,883 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d9d31939acfea5ee9b43b1f06257671943c7251c27c351c5e445aa6495fd098 [2022-12-13 18:58:46,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:58:46,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:58:46,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:58:46,064 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:58:46,064 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:58:46,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c [2022-12-13 18:58:48,652 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:58:48,837 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:58:48,837 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c [2022-12-13 18:58:48,849 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/bin/uautomizer-uyxdKDjOR8/data/37ab23716/7e2352a3bde6408780c5d3225992a99e/FLAG0f42fa0e8 [2022-12-13 18:58:48,859 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/bin/uautomizer-uyxdKDjOR8/data/37ab23716/7e2352a3bde6408780c5d3225992a99e [2022-12-13 18:58:48,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:58:48,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:58:48,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:58:48,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:58:48,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:58:48,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:58:48" (1/1) ... [2022-12-13 18:58:48,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a7ea1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:58:48, skipping insertion in model container [2022-12-13 18:58:48,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:58:48" (1/1) ... [2022-12-13 18:58:48,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:58:48,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:58:49,140 WARN L237 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_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c[38051,38064] [2022-12-13 18:58:49,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:58:49,215 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:58:49,255 WARN L237 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_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c[38051,38064] [2022-12-13 18:58:49,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:58:49,295 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:58:49,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:58:49 WrapperNode [2022-12-13 18:58:49,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:58:49,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:58:49,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:58:49,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:58:49,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:58:49" (1/1) ... [2022-12-13 18:58:49,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:58:49" (1/1) ... [2022-12-13 18:58:49,342 INFO L138 Inliner]: procedures = 92, calls = 338, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 817 [2022-12-13 18:58:49,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:58:49,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:58:49,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:58:49,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:58:49,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:58:49" (1/1) ... [2022-12-13 18:58:49,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:58:49" (1/1) ... [2022-12-13 18:58:49,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:58:49" (1/1) ... [2022-12-13 18:58:49,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:58:49" (1/1) ... [2022-12-13 18:58:49,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:58:49" (1/1) ... [2022-12-13 18:58:49,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:58:49" (1/1) ... [2022-12-13 18:58:49,373 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:58:49" (1/1) ... [2022-12-13 18:58:49,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:58:49" (1/1) ... [2022-12-13 18:58:49,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:58:49,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:58:49,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:58:49,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:58:49,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:58:49" (1/1) ... [2022-12-13 18:58:49,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:58:49,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:58:49,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:58:49,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4c8740-2cde-46a4-b6b6-04e3f3cc779e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:58:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:58:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-13 18:58:49,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-13 18:58:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-13 18:58:49,439 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-13 18:58:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-13 18:58:49,440 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-13 18:58:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-13 18:58:49,440 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-13 18:58:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-13 18:58:49,440 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-13 18:58:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-13 18:58:49,441 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-13 18:58:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-13 18:58:49,441 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-13 18:58:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-13 18:58:49,441 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-13 18:58:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-13 18:58:49,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-13 18:58:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-13 18:58:49,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-13 18:58:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-13 18:58:49,442 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-13 18:58:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-13 18:58:49,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-13 18:58:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-13 18:58:49,442 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-13 18:58:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-13 18:58:49,443 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-13 18:58:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-13 18:58:49,443 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-13 18:58:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-13 18:58:49,443 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-13 18:58:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-13 18:58:49,443 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-13 18:58:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:58:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2022-12-13 18:58:49,444 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2022-12-13 18:58:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-13 18:58:49,444 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-13 18:58:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-13 18:58:49,444 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-13 18:58:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-13 18:58:49,445 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-13 18:58:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:58:49,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:58:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-13 18:58:49,445 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-13 18:58:49,563 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:58:49,565 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:58:50,262 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:58:50,272 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:58:50,272 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 18:58:50,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:58:50 BoogieIcfgContainer [2022-12-13 18:58:50,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:58:50,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:58:50,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:58:50,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:58:50,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:58:48" (1/3) ... [2022-12-13 18:58:50,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f78ae6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:58:50, skipping insertion in model container [2022-12-13 18:58:50,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:58:49" (2/3) ... [2022-12-13 18:58:50,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f78ae6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:58:50, skipping insertion in model container [2022-12-13 18:58:50,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:58:50" (3/3) ... [2022-12-13 18:58:50,283 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product18.cil.c [2022-12-13 18:58:50,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:58:50,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:58:50,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:58:50,361 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@cb312a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:58:50,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 18:58:50,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 541 states, 426 states have (on average 1.7065727699530517) internal successors, (727), 449 states have internal predecessors, (727), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 84 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 18:58:50,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 18:58:50,381 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:58:50,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:58:50,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:58:50,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:58:50,386 INFO L85 PathProgramCache]: Analyzing trace with hash -481021737, now seen corresponding path program 1 times [2022-12-13 18:58:50,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:58:50,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597589079] [2022-12-13 18:58:50,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:58:50,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:58:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:58:50,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:58:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:58:50,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:58:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:58:50,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:58:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:58:51,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 18:58:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:58:51,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:58:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:58:51,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:58:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:58:51,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:58:51,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:58:51,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597589079] [2022-12-13 18:58:51,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597589079] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:58:51,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:58:51,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:58:51,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999593656] [2022-12-13 18:58:51,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:58:51,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:58:51,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:58:51,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:58:51,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:58:51,162 INFO L87 Difference]: Start difference. First operand has 541 states, 426 states have (on average 1.7065727699530517) internal successors, (727), 449 states have internal predecessors, (727), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 84 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:58:55,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:58:55,062 INFO L93 Difference]: Finished difference Result 1224 states and 2085 transitions. [2022-12-13 18:58:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:58:55,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-12-13 18:58:55,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:58:55,078 INFO L225 Difference]: With dead ends: 1224 [2022-12-13 18:58:55,078 INFO L226 Difference]: Without dead ends: 695 [2022-12-13 18:58:55,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:58:55,086 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1103 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:58:55,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 1215 Invalid, 2779 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 18:58:55,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-12-13 18:58:55,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 533. [2022-12-13 18:58:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 420 states have (on average 1.7023809523809523) internal successors, (715), 441 states have internal predecessors, (715), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 18:58:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 892 transitions. [2022-12-13 18:58:55,205 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 892 transitions. Word has length 56 [2022-12-13 18:58:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:58:55,205 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 892 transitions. [2022-12-13 18:58:55,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:58:55,205 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 892 transitions. [2022-12-13 18:58:55,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 18:58:55,208 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:58:55,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:58:55,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:58:55,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:58:55,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:58:55,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1890375133, now seen corresponding path program 1 times [2022-12-13 18:58:55,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:58:55,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003864296] [2022-12-13 18:58:55,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:58:55,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:58:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:58:55,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:58:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:58:55,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:58:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:58:55,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:58:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:58:55,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:58:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:58:55,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:58:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:58:55,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:58:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:58:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:58:55,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:58:55,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003864296] [2022-12-13 18:58:55,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003864296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:58:55,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:58:55,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:58:55,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817907546] [2022-12-13 18:58:55,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:58:55,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:58:55,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:58:55,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:58:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:58:55,556 INFO L87 Difference]: Start difference. First operand 533 states and 892 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:58:59,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:58:59,948 INFO L93 Difference]: Finished difference Result 1210 states and 2051 transitions. [2022-12-13 18:58:59,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:58:59,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-12-13 18:58:59,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:58:59,953 INFO L225 Difference]: With dead ends: 1210 [2022-12-13 18:58:59,953 INFO L226 Difference]: Without dead ends: 695 [2022-12-13 18:58:59,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:58:59,956 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 668 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 2826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:58:59,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 1206 Invalid, 2826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 18:58:59,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-12-13 18:59:00,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 533. [2022-12-13 18:59:00,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 420 states have (on average 1.7) internal successors, (714), 441 states have internal predecessors, (714), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 18:59:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 891 transitions. [2022-12-13 18:59:00,026 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 891 transitions. Word has length 59 [2022-12-13 18:59:00,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:59:00,027 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 891 transitions. [2022-12-13 18:59:00,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:00,027 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 891 transitions. [2022-12-13 18:59:00,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 18:59:00,028 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:59:00,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:59:00,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:59:00,029 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:59:00,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:59:00,029 INFO L85 PathProgramCache]: Analyzing trace with hash -2145122521, now seen corresponding path program 1 times [2022-12-13 18:59:00,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:59:00,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997639403] [2022-12-13 18:59:00,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:59:00,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:59:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:00,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:59:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:00,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 18:59:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:00,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 18:59:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:00,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:00,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:00,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:59:00,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997639403] [2022-12-13 18:59:00,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997639403] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:59:00,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:59:00,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:59:00,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102420638] [2022-12-13 18:59:00,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:59:00,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:59:00,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:59:00,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:59:00,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:59:00,350 INFO L87 Difference]: Start difference. First operand 533 states and 891 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:03,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:59:03,966 INFO L93 Difference]: Finished difference Result 1210 states and 2050 transitions. [2022-12-13 18:59:03,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:59:03,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-12-13 18:59:03,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:59:03,970 INFO L225 Difference]: With dead ends: 1210 [2022-12-13 18:59:03,970 INFO L226 Difference]: Without dead ends: 695 [2022-12-13 18:59:03,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:59:03,972 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1093 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 2777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:59:03,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 1197 Invalid, 2777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 18:59:03,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-12-13 18:59:04,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 533. [2022-12-13 18:59:04,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 420 states have (on average 1.6976190476190476) internal successors, (713), 441 states have internal predecessors, (713), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 18:59:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 890 transitions. [2022-12-13 18:59:04,040 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 890 transitions. Word has length 60 [2022-12-13 18:59:04,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:59:04,040 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 890 transitions. [2022-12-13 18:59:04,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:04,040 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 890 transitions. [2022-12-13 18:59:04,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 18:59:04,041 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:59:04,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:59:04,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:59:04,041 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:59:04,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:59:04,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1890778849, now seen corresponding path program 1 times [2022-12-13 18:59:04,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:59:04,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707992216] [2022-12-13 18:59:04,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:59:04,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:59:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:04,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:59:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:04,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:04,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:59:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:04,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:59:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:04,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:04,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:59:04,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707992216] [2022-12-13 18:59:04,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707992216] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:59:04,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:59:04,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:59:04,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11261331] [2022-12-13 18:59:04,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:59:04,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:59:04,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:59:04,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:59:04,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:59:04,330 INFO L87 Difference]: Start difference. First operand 533 states and 890 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:08,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:59:08,302 INFO L93 Difference]: Finished difference Result 1210 states and 2049 transitions. [2022-12-13 18:59:08,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:59:08,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2022-12-13 18:59:08,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:59:08,309 INFO L225 Difference]: With dead ends: 1210 [2022-12-13 18:59:08,309 INFO L226 Difference]: Without dead ends: 695 [2022-12-13 18:59:08,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:59:08,312 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 663 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 2697 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:59:08,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 1186 Invalid, 2820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2697 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 18:59:08,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-12-13 18:59:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 533. [2022-12-13 18:59:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 420 states have (on average 1.6952380952380952) internal successors, (712), 441 states have internal predecessors, (712), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 18:59:08,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 889 transitions. [2022-12-13 18:59:08,379 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 889 transitions. Word has length 61 [2022-12-13 18:59:08,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:59:08,379 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 889 transitions. [2022-12-13 18:59:08,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:08,380 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 889 transitions. [2022-12-13 18:59:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 18:59:08,380 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:59:08,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:59:08,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:59:08,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:59:08,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:59:08,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1260485795, now seen corresponding path program 1 times [2022-12-13 18:59:08,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:59:08,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895439387] [2022-12-13 18:59:08,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:59:08,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:59:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:59:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:08,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:08,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 18:59:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:08,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:59:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:08,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:08,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:08,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:08,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:59:08,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895439387] [2022-12-13 18:59:08,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895439387] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:59:08,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:59:08,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:59:08,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112213022] [2022-12-13 18:59:08,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:59:08,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:59:08,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:59:08,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:59:08,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:59:08,682 INFO L87 Difference]: Start difference. First operand 533 states and 889 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:12,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:59:12,783 INFO L93 Difference]: Finished difference Result 1210 states and 2048 transitions. [2022-12-13 18:59:12,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:59:12,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 62 [2022-12-13 18:59:12,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:59:12,786 INFO L225 Difference]: With dead ends: 1210 [2022-12-13 18:59:12,786 INFO L226 Difference]: Without dead ends: 695 [2022-12-13 18:59:12,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:59:12,788 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 659 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:59:12,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1216 Invalid, 2818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 18:59:12,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-12-13 18:59:12,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 533. [2022-12-13 18:59:12,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 420 states have (on average 1.6928571428571428) internal successors, (711), 441 states have internal predecessors, (711), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 18:59:12,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 888 transitions. [2022-12-13 18:59:12,857 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 888 transitions. Word has length 62 [2022-12-13 18:59:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:59:12,857 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 888 transitions. [2022-12-13 18:59:12,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:12,858 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 888 transitions. [2022-12-13 18:59:12,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 18:59:12,859 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:59:12,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:59:12,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:59:12,859 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:59:12,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:59:12,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1456327238, now seen corresponding path program 1 times [2022-12-13 18:59:12,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:59:12,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674550561] [2022-12-13 18:59:12,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:59:12,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:59:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:12,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:59:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:12,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:12,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:59:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:13,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:59:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:13,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:13,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:13,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:59:13,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674550561] [2022-12-13 18:59:13,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674550561] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:59:13,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:59:13,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:59:13,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257471619] [2022-12-13 18:59:13,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:59:13,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:59:13,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:59:13,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:59:13,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:59:13,126 INFO L87 Difference]: Start difference. First operand 533 states and 888 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:16,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:59:16,642 INFO L93 Difference]: Finished difference Result 1170 states and 1972 transitions. [2022-12-13 18:59:16,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:59:16,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2022-12-13 18:59:16,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:59:16,645 INFO L225 Difference]: With dead ends: 1170 [2022-12-13 18:59:16,645 INFO L226 Difference]: Without dead ends: 695 [2022-12-13 18:59:16,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:59:16,647 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1183 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 2434 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 2434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:59:16,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 1168 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 2434 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 18:59:16,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-12-13 18:59:16,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 533. [2022-12-13 18:59:16,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 420 states have (on average 1.680952380952381) internal successors, (706), 441 states have internal predecessors, (706), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 18:59:16,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 883 transitions. [2022-12-13 18:59:16,707 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 883 transitions. Word has length 63 [2022-12-13 18:59:16,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:59:16,707 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 883 transitions. [2022-12-13 18:59:16,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:16,707 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 883 transitions. [2022-12-13 18:59:16,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 18:59:16,708 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:59:16,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:59:16,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:59:16,709 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:59:16,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:59:16,709 INFO L85 PathProgramCache]: Analyzing trace with hash 53797837, now seen corresponding path program 1 times [2022-12-13 18:59:16,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:59:16,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263092336] [2022-12-13 18:59:16,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:59:16,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:59:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:16,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:59:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:16,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:16,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:59:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:16,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 18:59:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:16,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:16,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:16,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:16,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:59:16,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263092336] [2022-12-13 18:59:16,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263092336] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:59:16,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:59:16,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:59:16,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114890271] [2022-12-13 18:59:16,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:59:16,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:59:16,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:59:16,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:59:16,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:59:16,955 INFO L87 Difference]: Start difference. First operand 533 states and 883 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:20,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:59:20,502 INFO L93 Difference]: Finished difference Result 1170 states and 1967 transitions. [2022-12-13 18:59:20,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:59:20,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2022-12-13 18:59:20,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:59:20,505 INFO L225 Difference]: With dead ends: 1170 [2022-12-13 18:59:20,505 INFO L226 Difference]: Without dead ends: 695 [2022-12-13 18:59:20,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:59:20,507 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1176 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 2685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:59:20,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 1164 Invalid, 2685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 18:59:20,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-12-13 18:59:20,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 533. [2022-12-13 18:59:20,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 420 states have (on average 1.6690476190476191) internal successors, (701), 441 states have internal predecessors, (701), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 18:59:20,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 878 transitions. [2022-12-13 18:59:20,585 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 878 transitions. Word has length 64 [2022-12-13 18:59:20,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:59:20,585 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 878 transitions. [2022-12-13 18:59:20,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:20,585 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 878 transitions. [2022-12-13 18:59:20,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 18:59:20,586 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:59:20,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:59:20,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:59:20,587 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:59:20,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:59:20,587 INFO L85 PathProgramCache]: Analyzing trace with hash -695415713, now seen corresponding path program 1 times [2022-12-13 18:59:20,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:59:20,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846063751] [2022-12-13 18:59:20,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:59:20,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:59:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:20,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:59:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:20,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:20,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:59:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:20,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:59:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:20,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:20,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:20,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:59:20,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846063751] [2022-12-13 18:59:20,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846063751] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:59:20,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:59:20,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:59:20,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852649803] [2022-12-13 18:59:20,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:59:20,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:59:20,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:59:20,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:59:20,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:59:20,836 INFO L87 Difference]: Start difference. First operand 533 states and 878 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:25,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:59:25,198 INFO L93 Difference]: Finished difference Result 1170 states and 1962 transitions. [2022-12-13 18:59:25,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:59:25,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2022-12-13 18:59:25,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:59:25,203 INFO L225 Difference]: With dead ends: 1170 [2022-12-13 18:59:25,203 INFO L226 Difference]: Without dead ends: 695 [2022-12-13 18:59:25,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:59:25,205 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 754 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 2579 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:59:25,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1196 Invalid, 2702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2579 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-13 18:59:25,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-12-13 18:59:25,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 533. [2022-12-13 18:59:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 420 states have (on average 1.6571428571428573) internal successors, (696), 441 states have internal predecessors, (696), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 18:59:25,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 873 transitions. [2022-12-13 18:59:25,272 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 873 transitions. Word has length 65 [2022-12-13 18:59:25,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:59:25,272 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 873 transitions. [2022-12-13 18:59:25,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:25,272 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 873 transitions. [2022-12-13 18:59:25,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 18:59:25,273 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:59:25,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:59:25,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:59:25,274 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:59:25,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:59:25,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1447465613, now seen corresponding path program 1 times [2022-12-13 18:59:25,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:59:25,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023698220] [2022-12-13 18:59:25,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:59:25,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:59:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:25,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:59:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:25,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:25,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:59:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:25,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 18:59:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:25,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:25,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:25,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:59:25,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023698220] [2022-12-13 18:59:25,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023698220] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:59:25,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:59:25,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:59:25,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680816429] [2022-12-13 18:59:25,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:59:25,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:59:25,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:59:25,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:59:25,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:59:25,556 INFO L87 Difference]: Start difference. First operand 533 states and 873 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:29,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:59:29,477 INFO L93 Difference]: Finished difference Result 1185 states and 1977 transitions. [2022-12-13 18:59:29,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:59:29,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2022-12-13 18:59:29,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:59:29,480 INFO L225 Difference]: With dead ends: 1185 [2022-12-13 18:59:29,480 INFO L226 Difference]: Without dead ends: 716 [2022-12-13 18:59:29,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:59:29,481 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 743 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2597 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 2722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:59:29,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1159 Invalid, 2722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2597 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 18:59:29,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-12-13 18:59:29,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 535. [2022-12-13 18:59:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 422 states have (on average 1.6540284360189574) internal successors, (698), 443 states have internal predecessors, (698), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 18:59:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 875 transitions. [2022-12-13 18:59:29,543 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 875 transitions. Word has length 66 [2022-12-13 18:59:29,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:59:29,543 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 875 transitions. [2022-12-13 18:59:29,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:29,543 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 875 transitions. [2022-12-13 18:59:29,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 18:59:29,544 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:59:29,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:59:29,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:59:29,544 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:59:29,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:59:29,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1530317394, now seen corresponding path program 1 times [2022-12-13 18:59:29,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:59:29,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012037518] [2022-12-13 18:59:29,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:59:29,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:59:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:29,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:59:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:29,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:29,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:59:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 18:59:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:29,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:29,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:29,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:59:29,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012037518] [2022-12-13 18:59:29,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012037518] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:59:29,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:59:29,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:59:29,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469916145] [2022-12-13 18:59:29,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:59:29,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:59:29,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:59:29,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:59:29,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:59:29,808 INFO L87 Difference]: Start difference. First operand 535 states and 875 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:33,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:59:33,656 INFO L93 Difference]: Finished difference Result 1176 states and 1963 transitions. [2022-12-13 18:59:33,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:59:33,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2022-12-13 18:59:33,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:59:33,659 INFO L225 Difference]: With dead ends: 1176 [2022-12-13 18:59:33,659 INFO L226 Difference]: Without dead ends: 699 [2022-12-13 18:59:33,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:59:33,660 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 748 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 2682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:59:33,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1167 Invalid, 2682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 18:59:33,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-12-13 18:59:33,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 535. [2022-12-13 18:59:33,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 422 states have (on average 1.6421800947867298) internal successors, (693), 443 states have internal predecessors, (693), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 18:59:33,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 870 transitions. [2022-12-13 18:59:33,722 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 870 transitions. Word has length 66 [2022-12-13 18:59:33,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:59:33,723 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 870 transitions. [2022-12-13 18:59:33,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:33,723 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 870 transitions. [2022-12-13 18:59:33,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 18:59:33,724 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:59:33,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:59:33,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:59:33,724 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:59:33,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:59:33,724 INFO L85 PathProgramCache]: Analyzing trace with hash -236840319, now seen corresponding path program 1 times [2022-12-13 18:59:33,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:59:33,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331137578] [2022-12-13 18:59:33,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:59:33,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:59:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:59:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:33,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:33,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:59:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:33,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:59:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:34,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:34,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:34,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:34,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:59:34,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331137578] [2022-12-13 18:59:34,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331137578] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:59:34,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:59:34,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:59:34,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887148478] [2022-12-13 18:59:34,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:59:34,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:59:34,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:59:34,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:59:34,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:59:34,026 INFO L87 Difference]: Start difference. First operand 535 states and 870 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:37,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:59:37,767 INFO L93 Difference]: Finished difference Result 1189 states and 1974 transitions. [2022-12-13 18:59:37,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:59:37,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 67 [2022-12-13 18:59:37,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:59:37,770 INFO L225 Difference]: With dead ends: 1189 [2022-12-13 18:59:37,770 INFO L226 Difference]: Without dead ends: 720 [2022-12-13 18:59:37,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:59:37,772 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 1176 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 2405 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 2667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 2405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:59:37,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 1149 Invalid, 2667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 2405 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 18:59:37,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-12-13 18:59:37,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 538. [2022-12-13 18:59:37,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 425 states have (on average 1.6376470588235295) internal successors, (696), 446 states have internal predecessors, (696), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 18:59:37,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 873 transitions. [2022-12-13 18:59:37,835 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 873 transitions. Word has length 67 [2022-12-13 18:59:37,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:59:37,835 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 873 transitions. [2022-12-13 18:59:37,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:37,835 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 873 transitions. [2022-12-13 18:59:37,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 18:59:37,836 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:59:37,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:59:37,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:59:37,836 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:59:37,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:59:37,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1490116356, now seen corresponding path program 1 times [2022-12-13 18:59:37,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:59:37,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196371805] [2022-12-13 18:59:37,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:59:37,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:59:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:37,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:59:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:37,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:37,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:59:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:38,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:59:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:38,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:38,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:38,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:59:38,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196371805] [2022-12-13 18:59:38,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196371805] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:59:38,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:59:38,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:59:38,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843905551] [2022-12-13 18:59:38,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:59:38,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:59:38,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:59:38,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:59:38,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:59:38,110 INFO L87 Difference]: Start difference. First operand 538 states and 873 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:42,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:59:42,249 INFO L93 Difference]: Finished difference Result 1185 states and 1967 transitions. [2022-12-13 18:59:42,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:59:42,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 67 [2022-12-13 18:59:42,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:59:42,251 INFO L225 Difference]: With dead ends: 1185 [2022-12-13 18:59:42,252 INFO L226 Difference]: Without dead ends: 705 [2022-12-13 18:59:42,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:59:42,253 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 741 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 2539 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:59:42,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 1182 Invalid, 2664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2539 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 18:59:42,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-12-13 18:59:42,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 538. [2022-12-13 18:59:42,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 425 states have (on average 1.6258823529411766) internal successors, (691), 446 states have internal predecessors, (691), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 18:59:42,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 868 transitions. [2022-12-13 18:59:42,316 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 868 transitions. Word has length 67 [2022-12-13 18:59:42,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:59:42,316 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 868 transitions. [2022-12-13 18:59:42,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:42,316 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 868 transitions. [2022-12-13 18:59:42,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 18:59:42,317 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:59:42,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:59:42,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:59:42,317 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:59:42,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:59:42,318 INFO L85 PathProgramCache]: Analyzing trace with hash 286666936, now seen corresponding path program 1 times [2022-12-13 18:59:42,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:59:42,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889629396] [2022-12-13 18:59:42,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:59:42,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:59:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:42,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:59:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:42,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:42,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:59:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:42,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 18:59:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:42,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:42,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:42,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:59:42,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889629396] [2022-12-13 18:59:42,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889629396] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:59:42,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:59:42,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:59:42,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246553455] [2022-12-13 18:59:42,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:59:42,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:59:42,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:59:42,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:59:42,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:59:42,587 INFO L87 Difference]: Start difference. First operand 538 states and 868 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:46,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:59:46,530 INFO L93 Difference]: Finished difference Result 1195 states and 1973 transitions. [2022-12-13 18:59:46,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:59:46,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 68 [2022-12-13 18:59:46,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:59:46,533 INFO L225 Difference]: With dead ends: 1195 [2022-12-13 18:59:46,533 INFO L226 Difference]: Without dead ends: 726 [2022-12-13 18:59:46,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:59:46,534 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 1160 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:59:46,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 1186 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 18:59:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-12-13 18:59:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 542. [2022-12-13 18:59:46,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.6200466200466201) internal successors, (695), 450 states have internal predecessors, (695), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 18:59:46,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 872 transitions. [2022-12-13 18:59:46,599 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 872 transitions. Word has length 68 [2022-12-13 18:59:46,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:59:46,599 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 872 transitions. [2022-12-13 18:59:46,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:46,599 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 872 transitions. [2022-12-13 18:59:46,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 18:59:46,600 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:59:46,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:59:46,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:59:46,600 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:59:46,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:59:46,600 INFO L85 PathProgramCache]: Analyzing trace with hash -74566441, now seen corresponding path program 1 times [2022-12-13 18:59:46,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:59:46,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642149297] [2022-12-13 18:59:46,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:59:46,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:59:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:46,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:59:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:46,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:46,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:59:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:46,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 18:59:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:46,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:46,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:46,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:46,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:59:46,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642149297] [2022-12-13 18:59:46,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642149297] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:59:46,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:59:46,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:59:46,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802346204] [2022-12-13 18:59:46,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:59:46,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:59:46,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:59:46,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:59:46,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:59:46,883 INFO L87 Difference]: Start difference. First operand 542 states and 872 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:59:50,474 INFO L93 Difference]: Finished difference Result 1237 states and 2024 transitions. [2022-12-13 18:59:50,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:59:50,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 68 [2022-12-13 18:59:50,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:59:50,477 INFO L225 Difference]: With dead ends: 1237 [2022-12-13 18:59:50,477 INFO L226 Difference]: Without dead ends: 713 [2022-12-13 18:59:50,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:59:50,478 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 1079 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 2660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:59:50,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 1185 Invalid, 2660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 18:59:50,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-12-13 18:59:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 542. [2022-12-13 18:59:50,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.6177156177156178) internal successors, (694), 450 states have internal predecessors, (694), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 18:59:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 871 transitions. [2022-12-13 18:59:50,545 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 871 transitions. Word has length 68 [2022-12-13 18:59:50,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:59:50,545 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 871 transitions. [2022-12-13 18:59:50,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 18:59:50,545 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 871 transitions. [2022-12-13 18:59:50,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 18:59:50,546 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:59:50,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:59:50,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:59:50,546 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:59:50,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:59:50,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1207757034, now seen corresponding path program 1 times [2022-12-13 18:59:50,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:59:50,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041975590] [2022-12-13 18:59:50,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:59:50,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:59:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:50,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:59:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:50,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:50,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:59:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:50,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 18:59:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:50,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:50,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:50,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:59:50,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041975590] [2022-12-13 18:59:50,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041975590] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:59:50,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:59:50,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 18:59:50,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598287261] [2022-12-13 18:59:50,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:59:50,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:59:50,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:59:50,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:59:50,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:59:50,896 INFO L87 Difference]: Start difference. First operand 542 states and 871 transitions. Second operand has 11 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:59:56,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:59:56,599 INFO L93 Difference]: Finished difference Result 1193 states and 1968 transitions. [2022-12-13 18:59:56,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:59:56,600 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 68 [2022-12-13 18:59:56,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:59:56,602 INFO L225 Difference]: With dead ends: 1193 [2022-12-13 18:59:56,602 INFO L226 Difference]: Without dead ends: 703 [2022-12-13 18:59:56,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-12-13 18:59:56,604 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 763 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 6124 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 6255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 6124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:59:56,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 2627 Invalid, 6255 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 6124 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-12-13 18:59:56,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-12-13 18:59:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 534. [2022-12-13 18:59:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 421 states have (on average 1.6223277909738718) internal successors, (683), 442 states have internal predecessors, (683), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 18:59:56,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 860 transitions. [2022-12-13 18:59:56,672 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 860 transitions. Word has length 68 [2022-12-13 18:59:56,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:59:56,672 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 860 transitions. [2022-12-13 18:59:56,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:59:56,672 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 860 transitions. [2022-12-13 18:59:56,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 18:59:56,673 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:59:56,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:59:56,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 18:59:56,673 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:59:56,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:59:56,674 INFO L85 PathProgramCache]: Analyzing trace with hash 215181447, now seen corresponding path program 1 times [2022-12-13 18:59:56,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:59:56,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082165869] [2022-12-13 18:59:56,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:59:56,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:59:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:56,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:59:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:56,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:56,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:59:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:56,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 18:59:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:59:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:57,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:59:57,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082165869] [2022-12-13 18:59:57,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082165869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:59:57,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:59:57,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 18:59:57,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507771415] [2022-12-13 18:59:57,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:59:57,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:59:57,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:59:57,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:59:57,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:59:57,003 INFO L87 Difference]: Start difference. First operand 534 states and 860 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 19:00:01,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:00:01,682 INFO L93 Difference]: Finished difference Result 1193 states and 1964 transitions. [2022-12-13 19:00:01,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:00:01,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 69 [2022-12-13 19:00:01,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:00:01,687 INFO L225 Difference]: With dead ends: 1193 [2022-12-13 19:00:01,687 INFO L226 Difference]: Without dead ends: 724 [2022-12-13 19:00:01,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:00:01,688 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 708 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 4612 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 4736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 4612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:00:01,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 2123 Invalid, 4736 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 4612 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 19:00:01,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-12-13 19:00:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 539. [2022-12-13 19:00:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 426 states have (on average 1.6150234741784038) internal successors, (688), 447 states have internal predecessors, (688), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 19:00:01,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 865 transitions. [2022-12-13 19:00:01,757 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 865 transitions. Word has length 69 [2022-12-13 19:00:01,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:00:01,757 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 865 transitions. [2022-12-13 19:00:01,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 19:00:01,757 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 865 transitions. [2022-12-13 19:00:01,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 19:00:01,758 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:00:01,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:00:01,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 19:00:01,758 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:00:01,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:00:01,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1063227830, now seen corresponding path program 1 times [2022-12-13 19:00:01,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:00:01,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197484348] [2022-12-13 19:00:01,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:00:01,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:00:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:01,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:00:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:01,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:01,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:00:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:02,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:00:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:02,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:02,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:00:02,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:00:02,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197484348] [2022-12-13 19:00:02,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197484348] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:00:02,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:00:02,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:00:02,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219300748] [2022-12-13 19:00:02,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:00:02,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:00:02,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:00:02,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:00:02,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:00:02,019 INFO L87 Difference]: Start difference. First operand 539 states and 865 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:00:06,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:00:06,657 INFO L93 Difference]: Finished difference Result 1191 states and 1959 transitions. [2022-12-13 19:00:06,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 19:00:06,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 70 [2022-12-13 19:00:06,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:00:06,662 INFO L225 Difference]: With dead ends: 1191 [2022-12-13 19:00:06,662 INFO L226 Difference]: Without dead ends: 701 [2022-12-13 19:00:06,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:00:06,664 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 702 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 2622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:00:06,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1164 Invalid, 2622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2497 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 19:00:06,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-12-13 19:00:06,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 539. [2022-12-13 19:00:06,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 426 states have (on average 1.6056338028169015) internal successors, (684), 447 states have internal predecessors, (684), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 19:00:06,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 861 transitions. [2022-12-13 19:00:06,734 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 861 transitions. Word has length 70 [2022-12-13 19:00:06,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:00:06,734 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 861 transitions. [2022-12-13 19:00:06,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:00:06,735 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 861 transitions. [2022-12-13 19:00:06,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 19:00:06,736 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:00:06,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:00:06,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 19:00:06,736 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:00:06,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:00:06,737 INFO L85 PathProgramCache]: Analyzing trace with hash 308579468, now seen corresponding path program 1 times [2022-12-13 19:00:06,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:00:06,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891953680] [2022-12-13 19:00:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:00:06,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:00:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:06,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:00:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:06,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:06,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:00:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:00:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:07,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:07,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:00:07,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:00:07,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891953680] [2022-12-13 19:00:07,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891953680] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:00:07,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:00:07,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 19:00:07,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644366030] [2022-12-13 19:00:07,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:00:07,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:00:07,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:00:07,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:00:07,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:00:07,128 INFO L87 Difference]: Start difference. First operand 539 states and 861 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 19:00:14,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:00:14,661 INFO L93 Difference]: Finished difference Result 1959 states and 3314 transitions. [2022-12-13 19:00:14,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:00:14,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 70 [2022-12-13 19:00:14,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:00:14,673 INFO L225 Difference]: With dead ends: 1959 [2022-12-13 19:00:14,673 INFO L226 Difference]: Without dead ends: 1498 [2022-12-13 19:00:14,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:00:14,676 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 4212 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 3453 mSolverCounterSat, 1217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4294 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 4670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1217 IncrementalHoareTripleChecker+Valid, 3453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:00:14,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4294 Valid, 1525 Invalid, 4670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1217 Valid, 3453 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-12-13 19:00:14,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2022-12-13 19:00:14,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1021. [2022-12-13 19:00:14,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 809 states have (on average 1.6489493201483312) internal successors, (1334), 839 states have internal predecessors, (1334), 174 states have call successors, (174), 36 states have call predecessors, (174), 37 states have return successors, (176), 158 states have call predecessors, (176), 169 states have call successors, (176) [2022-12-13 19:00:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1684 transitions. [2022-12-13 19:00:14,903 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1684 transitions. Word has length 70 [2022-12-13 19:00:14,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:00:14,903 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1684 transitions. [2022-12-13 19:00:14,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 19:00:14,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1684 transitions. [2022-12-13 19:00:14,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 19:00:14,906 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:00:14,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:00:14,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 19:00:14,907 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:00:14,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:00:14,907 INFO L85 PathProgramCache]: Analyzing trace with hash -806032662, now seen corresponding path program 1 times [2022-12-13 19:00:14,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:00:14,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464546000] [2022-12-13 19:00:14,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:00:14,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:00:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:00:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:15,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:15,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:00:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:15,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:00:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:15,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:15,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:15,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:00:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:15,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:00:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:15,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 19:00:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:00:15,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:00:15,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464546000] [2022-12-13 19:00:15,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464546000] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:00:15,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:00:15,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 19:00:15,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508421080] [2022-12-13 19:00:15,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:00:15,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 19:00:15,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:00:15,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 19:00:15,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:00:15,634 INFO L87 Difference]: Start difference. First operand 1021 states and 1684 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-13 19:00:21,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:00:21,553 INFO L93 Difference]: Finished difference Result 2478 states and 4193 transitions. [2022-12-13 19:00:21,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:00:21,553 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 99 [2022-12-13 19:00:21,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:00:21,558 INFO L225 Difference]: With dead ends: 2478 [2022-12-13 19:00:21,558 INFO L226 Difference]: Without dead ends: 1536 [2022-12-13 19:00:21,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2022-12-13 19:00:21,561 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 2814 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 3684 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2814 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 4703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 3684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:00:21,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2814 Valid, 1994 Invalid, 4703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 3684 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-12-13 19:00:21,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2022-12-13 19:00:21,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1029. [2022-12-13 19:00:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 815 states have (on average 1.6441717791411044) internal successors, (1340), 845 states have internal predecessors, (1340), 174 states have call successors, (174), 36 states have call predecessors, (174), 39 states have return successors, (180), 160 states have call predecessors, (180), 169 states have call successors, (180) [2022-12-13 19:00:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1694 transitions. [2022-12-13 19:00:21,765 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1694 transitions. Word has length 99 [2022-12-13 19:00:21,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:00:21,765 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1694 transitions. [2022-12-13 19:00:21,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-13 19:00:21,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1694 transitions. [2022-12-13 19:00:21,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 19:00:21,767 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:00:21,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:00:21,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 19:00:21,768 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:00:21,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:00:21,768 INFO L85 PathProgramCache]: Analyzing trace with hash -350500354, now seen corresponding path program 1 times [2022-12-13 19:00:21,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:00:21,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894028454] [2022-12-13 19:00:21,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:00:21,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:00:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:21,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:00:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:21,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:21,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:00:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:22,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:00:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:22,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:22,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:22,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:00:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:22,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:22,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:00:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:22,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:00:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:00:22,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:00:22,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894028454] [2022-12-13 19:00:22,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894028454] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:00:22,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:00:22,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-13 19:00:22,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147979756] [2022-12-13 19:00:22,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:00:22,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 19:00:22,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:00:22,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 19:00:22,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:00:22,469 INFO L87 Difference]: Start difference. First operand 1029 states and 1694 transitions. Second operand has 18 states, 17 states have (on average 4.764705882352941) internal successors, (81), 13 states have internal predecessors, (81), 5 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-12-13 19:00:49,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:00:49,259 INFO L93 Difference]: Finished difference Result 6634 states and 11771 transitions. [2022-12-13 19:00:49,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-12-13 19:00:49,259 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.764705882352941) internal successors, (81), 13 states have internal predecessors, (81), 5 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 102 [2022-12-13 19:00:49,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:00:49,283 INFO L225 Difference]: With dead ends: 6634 [2022-12-13 19:00:49,283 INFO L226 Difference]: Without dead ends: 5679 [2022-12-13 19:00:49,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2544 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1160, Invalid=6496, Unknown=0, NotChecked=0, Total=7656 [2022-12-13 19:00:49,292 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 7564 mSDsluCounter, 5355 mSDsCounter, 0 mSdLazyCounter, 19024 mSolverCounterSat, 4288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7576 SdHoareTripleChecker+Valid, 5966 SdHoareTripleChecker+Invalid, 23312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4288 IncrementalHoareTripleChecker+Valid, 19024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:00:49,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7576 Valid, 5966 Invalid, 23312 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4288 Valid, 19024 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time] [2022-12-13 19:00:49,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5679 states. [2022-12-13 19:00:50,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5679 to 3849. [2022-12-13 19:00:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 3017 states have (on average 1.6125290023201857) internal successors, (4865), 3105 states have internal predecessors, (4865), 667 states have call successors, (667), 132 states have call predecessors, (667), 164 states have return successors, (872), 644 states have call predecessors, (872), 662 states have call successors, (872) [2022-12-13 19:00:50,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 6404 transitions. [2022-12-13 19:00:50,236 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 6404 transitions. Word has length 102 [2022-12-13 19:00:50,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:00:50,237 INFO L495 AbstractCegarLoop]: Abstraction has 3849 states and 6404 transitions. [2022-12-13 19:00:50,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.764705882352941) internal successors, (81), 13 states have internal predecessors, (81), 5 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-12-13 19:00:50,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 6404 transitions. [2022-12-13 19:00:50,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 19:00:50,239 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:00:50,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:00:50,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 19:00:50,240 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:00:50,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:00:50,240 INFO L85 PathProgramCache]: Analyzing trace with hash -773449746, now seen corresponding path program 1 times [2022-12-13 19:00:50,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:00:50,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504630785] [2022-12-13 19:00:50,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:00:50,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:00:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:50,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:00:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:50,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:00:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:50,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:00:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:50,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:50,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:50,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:00:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:50,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:00:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:50,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:00:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:51,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:00:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:51,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:00:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:00:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:00:51,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:00:51,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504630785] [2022-12-13 19:00:51,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504630785] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:00:51,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:00:51,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-13 19:00:51,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479133998] [2022-12-13 19:00:51,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:00:51,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 19:00:51,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:00:51,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 19:00:51,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-12-13 19:00:51,057 INFO L87 Difference]: Start difference. First operand 3849 states and 6404 transitions. Second operand has 20 states, 20 states have (on average 4.4) internal successors, (88), 14 states have internal predecessors, (88), 7 states have call successors, (12), 6 states have call predecessors, (12), 7 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-13 19:01:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:01:09,943 INFO L93 Difference]: Finished difference Result 11229 states and 19207 transitions. [2022-12-13 19:01:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-13 19:01:09,944 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.4) internal successors, (88), 14 states have internal predecessors, (88), 7 states have call successors, (12), 6 states have call predecessors, (12), 7 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 111 [2022-12-13 19:01:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:01:09,970 INFO L225 Difference]: With dead ends: 11229 [2022-12-13 19:01:09,970 INFO L226 Difference]: Without dead ends: 6772 [2022-12-13 19:01:09,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1461 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1061, Invalid=3909, Unknown=0, NotChecked=0, Total=4970 [2022-12-13 19:01:09,985 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 11621 mSDsluCounter, 4867 mSDsCounter, 0 mSdLazyCounter, 12805 mSolverCounterSat, 3915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11621 SdHoareTripleChecker+Valid, 5384 SdHoareTripleChecker+Invalid, 16720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3915 IncrementalHoareTripleChecker+Valid, 12805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:01:09,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11621 Valid, 5384 Invalid, 16720 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3915 Valid, 12805 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-12-13 19:01:09,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6772 states. [2022-12-13 19:01:11,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6772 to 5134. [2022-12-13 19:01:11,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5134 states, 4035 states have (on average 1.5672862453531597) internal successors, (6324), 4139 states have internal predecessors, (6324), 859 states have call successors, (859), 202 states have call predecessors, (859), 239 states have return successors, (1189), 825 states have call predecessors, (1189), 854 states have call successors, (1189) [2022-12-13 19:01:11,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5134 states to 5134 states and 8372 transitions. [2022-12-13 19:01:11,375 INFO L78 Accepts]: Start accepts. Automaton has 5134 states and 8372 transitions. Word has length 111 [2022-12-13 19:01:11,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:01:11,375 INFO L495 AbstractCegarLoop]: Abstraction has 5134 states and 8372 transitions. [2022-12-13 19:01:11,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.4) internal successors, (88), 14 states have internal predecessors, (88), 7 states have call successors, (12), 6 states have call predecessors, (12), 7 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-13 19:01:11,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5134 states and 8372 transitions. [2022-12-13 19:01:11,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 19:01:11,377 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:01:11,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:01:11,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 19:01:11,377 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:01:11,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:01:11,378 INFO L85 PathProgramCache]: Analyzing trace with hash -438675126, now seen corresponding path program 1 times [2022-12-13 19:01:11,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:01:11,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061723200] [2022-12-13 19:01:11,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:01:11,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:01:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:11,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:01:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:11,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:11,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:01:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:11,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:01:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:11,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:11,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:11,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:01:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:11,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:11,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:01:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:11,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 19:01:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:11,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 19:01:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:11,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 19:01:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:01:11,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:01:11,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061723200] [2022-12-13 19:01:11,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061723200] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:01:11,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:01:11,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 19:01:11,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802489054] [2022-12-13 19:01:11,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:01:11,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 19:01:11,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:01:11,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 19:01:11,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:01:11,989 INFO L87 Difference]: Start difference. First operand 5134 states and 8372 transitions. Second operand has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-13 19:01:21,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:01:21,015 INFO L93 Difference]: Finished difference Result 12038 states and 20419 transitions. [2022-12-13 19:01:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 19:01:21,016 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 113 [2022-12-13 19:01:21,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:01:21,040 INFO L225 Difference]: With dead ends: 12038 [2022-12-13 19:01:21,040 INFO L226 Difference]: Without dead ends: 6984 [2022-12-13 19:01:21,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2022-12-13 19:01:21,053 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 3778 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 4930 mSolverCounterSat, 1383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3778 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 6313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1383 IncrementalHoareTripleChecker+Valid, 4930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:01:21,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3778 Valid, 2775 Invalid, 6313 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1383 Valid, 4930 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-12-13 19:01:21,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6984 states. [2022-12-13 19:01:22,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6984 to 5230. [2022-12-13 19:01:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5230 states, 4083 states have (on average 1.5606171932402646) internal successors, (6372), 4219 states have internal predecessors, (6372), 875 states have call successors, (875), 202 states have call predecessors, (875), 271 states have return successors, (1317), 841 states have call predecessors, (1317), 870 states have call successors, (1317) [2022-12-13 19:01:22,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 8564 transitions. [2022-12-13 19:01:22,564 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 8564 transitions. Word has length 113 [2022-12-13 19:01:22,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:01:22,565 INFO L495 AbstractCegarLoop]: Abstraction has 5230 states and 8564 transitions. [2022-12-13 19:01:22,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-13 19:01:22,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 8564 transitions. [2022-12-13 19:01:22,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 19:01:22,567 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:01:22,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:01:22,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 19:01:22,567 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:01:22,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:01:22,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1920631883, now seen corresponding path program 1 times [2022-12-13 19:01:22,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:01:22,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360613056] [2022-12-13 19:01:22,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:01:22,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:01:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:22,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:01:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:22,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:22,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:01:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:01:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:22,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:22,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:23,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:01:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:23,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:23,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:01:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:23,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 19:01:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:23,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 19:01:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:23,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 19:01:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:23,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 19:01:23,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:01:23,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360613056] [2022-12-13 19:01:23,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360613056] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:01:23,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:01:23,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 19:01:23,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012138701] [2022-12-13 19:01:23,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:01:23,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 19:01:23,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:01:23,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 19:01:23,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:01:23,147 INFO L87 Difference]: Start difference. First operand 5230 states and 8564 transitions. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 19:01:33,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:01:33,420 INFO L93 Difference]: Finished difference Result 13171 states and 22465 transitions. [2022-12-13 19:01:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 19:01:33,421 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 113 [2022-12-13 19:01:33,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:01:33,448 INFO L225 Difference]: With dead ends: 13171 [2022-12-13 19:01:33,448 INFO L226 Difference]: Without dead ends: 8021 [2022-12-13 19:01:33,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2022-12-13 19:01:33,461 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 3203 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 4626 mSolverCounterSat, 1541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3203 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 6167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1541 IncrementalHoareTripleChecker+Valid, 4626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:01:33,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3203 Valid, 2028 Invalid, 6167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1541 Valid, 4626 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-12-13 19:01:33,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8021 states. [2022-12-13 19:01:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8021 to 5254. [2022-12-13 19:01:35,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5254 states, 4107 states have (on average 1.5573411249086926) internal successors, (6396), 4243 states have internal predecessors, (6396), 875 states have call successors, (875), 202 states have call predecessors, (875), 271 states have return successors, (1317), 841 states have call predecessors, (1317), 870 states have call successors, (1317) [2022-12-13 19:01:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 8588 transitions. [2022-12-13 19:01:35,038 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 8588 transitions. Word has length 113 [2022-12-13 19:01:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:01:35,038 INFO L495 AbstractCegarLoop]: Abstraction has 5254 states and 8588 transitions. [2022-12-13 19:01:35,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 19:01:35,038 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 8588 transitions. [2022-12-13 19:01:35,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-13 19:01:35,040 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:01:35,040 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:01:35,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 19:01:35,040 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:01:35,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:01:35,040 INFO L85 PathProgramCache]: Analyzing trace with hash 534103197, now seen corresponding path program 1 times [2022-12-13 19:01:35,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:01:35,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144586883] [2022-12-13 19:01:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:01:35,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:01:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:35,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:01:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:35,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:01:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:35,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:01:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:35,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:35,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:35,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:01:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:35,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:35,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:01:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:35,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 19:01:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:35,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 19:01:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:35,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 19:01:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 19:01:35,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:01:35,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144586883] [2022-12-13 19:01:35,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144586883] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:01:35,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:01:35,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 19:01:35,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635332914] [2022-12-13 19:01:35,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:01:35,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 19:01:35,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:01:35,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 19:01:35,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:01:35,517 INFO L87 Difference]: Start difference. First operand 5254 states and 8588 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 19:01:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:01:44,839 INFO L93 Difference]: Finished difference Result 7069 states and 12023 transitions. [2022-12-13 19:01:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:01:44,841 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2022-12-13 19:01:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:01:44,864 INFO L225 Difference]: With dead ends: 7069 [2022-12-13 19:01:44,864 INFO L226 Difference]: Without dead ends: 7054 [2022-12-13 19:01:44,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-12-13 19:01:44,867 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 1919 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 4462 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1933 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 5177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 4462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:01:44,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1933 Valid, 2045 Invalid, 5177 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [715 Valid, 4462 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-12-13 19:01:44,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7054 states. [2022-12-13 19:01:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7054 to 5266. [2022-12-13 19:01:46,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5266 states, 4119 states have (on average 1.5557174071376547) internal successors, (6408), 4255 states have internal predecessors, (6408), 875 states have call successors, (875), 202 states have call predecessors, (875), 271 states have return successors, (1317), 841 states have call predecessors, (1317), 870 states have call successors, (1317) [2022-12-13 19:01:46,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 8600 transitions. [2022-12-13 19:01:46,360 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 8600 transitions. Word has length 116 [2022-12-13 19:01:46,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:01:46,360 INFO L495 AbstractCegarLoop]: Abstraction has 5266 states and 8600 transitions. [2022-12-13 19:01:46,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 19:01:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 8600 transitions. [2022-12-13 19:01:46,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-13 19:01:46,362 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:01:46,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:01:46,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 19:01:46,362 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:01:46,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:01:46,363 INFO L85 PathProgramCache]: Analyzing trace with hash 785193528, now seen corresponding path program 1 times [2022-12-13 19:01:46,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:01:46,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941592953] [2022-12-13 19:01:46,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:01:46,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:01:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:46,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:01:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:46,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:46,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:01:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:46,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:01:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:46,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:46,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:46,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:01:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:46,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:46,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:01:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:46,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 19:01:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:46,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 19:01:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:46,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 19:01:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:46,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:01:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 19:01:46,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:01:46,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941592953] [2022-12-13 19:01:46,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941592953] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:01:46,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:01:46,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 19:01:46,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696172757] [2022-12-13 19:01:46,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:01:46,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 19:01:46,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:01:46,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 19:01:46,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:01:46,925 INFO L87 Difference]: Start difference. First operand 5266 states and 8600 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 19:01:57,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:01:57,333 INFO L93 Difference]: Finished difference Result 7415 states and 12585 transitions. [2022-12-13 19:01:57,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-13 19:01:57,334 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2022-12-13 19:01:57,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:01:57,360 INFO L225 Difference]: With dead ends: 7415 [2022-12-13 19:01:57,360 INFO L226 Difference]: Without dead ends: 7400 [2022-12-13 19:01:57,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=260, Invalid=1146, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 19:01:57,364 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 2094 mSDsluCounter, 3227 mSDsCounter, 0 mSdLazyCounter, 6144 mSolverCounterSat, 788 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2109 SdHoareTripleChecker+Valid, 3752 SdHoareTripleChecker+Invalid, 6932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 788 IncrementalHoareTripleChecker+Valid, 6144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:01:57,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2109 Valid, 3752 Invalid, 6932 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [788 Valid, 6144 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-12-13 19:01:57,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7400 states. [2022-12-13 19:01:58,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7400 to 5536. [2022-12-13 19:01:58,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5536 states, 4327 states have (on average 1.547030275017333) internal successors, (6694), 4463 states have internal predecessors, (6694), 915 states have call successors, (915), 227 states have call predecessors, (915), 293 states have return successors, (1387), 878 states have call predecessors, (1387), 910 states have call successors, (1387) [2022-12-13 19:01:58,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5536 states to 5536 states and 8996 transitions. [2022-12-13 19:01:58,996 INFO L78 Accepts]: Start accepts. Automaton has 5536 states and 8996 transitions. Word has length 122 [2022-12-13 19:01:58,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:01:58,996 INFO L495 AbstractCegarLoop]: Abstraction has 5536 states and 8996 transitions. [2022-12-13 19:01:58,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 19:01:58,996 INFO L276 IsEmpty]: Start isEmpty. Operand 5536 states and 8996 transitions. [2022-12-13 19:01:58,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-13 19:01:58,998 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:01:58,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:01:58,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 19:01:58,998 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:01:58,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:01:58,999 INFO L85 PathProgramCache]: Analyzing trace with hash 412895418, now seen corresponding path program 1 times [2022-12-13 19:01:58,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:01:58,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23518336] [2022-12-13 19:01:58,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:01:58,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:01:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:59,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:01:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:59,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:59,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:01:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:59,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:01:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:59,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:59,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:59,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:01:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:59,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:01:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:59,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:01:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:59,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 19:01:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:59,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 19:01:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:59,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 19:01:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:59,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:01:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:59,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 19:01:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:01:59,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 19:01:59,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:01:59,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23518336] [2022-12-13 19:01:59,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23518336] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:01:59,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:01:59,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 19:01:59,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921593783] [2022-12-13 19:01:59,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:01:59,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 19:01:59,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:01:59,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 19:01:59,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:01:59,622 INFO L87 Difference]: Start difference. First operand 5536 states and 8996 transitions. Second operand has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 7 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 19:02:10,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:02:10,184 INFO L93 Difference]: Finished difference Result 13698 states and 23428 transitions. [2022-12-13 19:02:10,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 19:02:10,185 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 7 states have call predecessors, (14), 3 states have call successors, (14) Word has length 133 [2022-12-13 19:02:10,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:02:10,228 INFO L225 Difference]: With dead ends: 13698 [2022-12-13 19:02:10,228 INFO L226 Difference]: Without dead ends: 8248 [2022-12-13 19:02:10,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=260, Invalid=862, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 19:02:10,254 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 3238 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 6072 mSolverCounterSat, 1546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3238 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 7618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1546 IncrementalHoareTripleChecker+Valid, 6072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:02:10,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3238 Valid, 2431 Invalid, 7618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1546 Valid, 6072 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-12-13 19:02:10,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8248 states. [2022-12-13 19:02:11,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8248 to 5584. [2022-12-13 19:02:11,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5584 states, 4363 states have (on average 1.5367866147146458) internal successors, (6705), 4499 states have internal predecessors, (6705), 915 states have call successors, (915), 227 states have call predecessors, (915), 305 states have return successors, (1491), 890 states have call predecessors, (1491), 910 states have call successors, (1491) [2022-12-13 19:02:12,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5584 states to 5584 states and 9111 transitions. [2022-12-13 19:02:12,001 INFO L78 Accepts]: Start accepts. Automaton has 5584 states and 9111 transitions. Word has length 133 [2022-12-13 19:02:12,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:02:12,001 INFO L495 AbstractCegarLoop]: Abstraction has 5584 states and 9111 transitions. [2022-12-13 19:02:12,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 7 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 19:02:12,001 INFO L276 IsEmpty]: Start isEmpty. Operand 5584 states and 9111 transitions. [2022-12-13 19:02:12,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:02:12,003 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:02:12,003 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:02:12,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 19:02:12,004 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:02:12,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:02:12,004 INFO L85 PathProgramCache]: Analyzing trace with hash 800983020, now seen corresponding path program 1 times [2022-12-13 19:02:12,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:02:12,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495200818] [2022-12-13 19:02:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:12,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:02:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:12,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:02:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:12,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:02:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:12,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:02:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:12,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:02:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:02:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:12,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:02:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:12,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:02:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:12,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:02:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:12,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:02:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:12,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 19:02:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:12,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 19:02:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:12,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 19:02:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:12,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:02:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:12,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 19:02:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 19:02:12,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:02:12,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495200818] [2022-12-13 19:02:12,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495200818] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:02:12,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:02:12,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:02:12,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33531952] [2022-12-13 19:02:12,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:02:12,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:02:12,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:02:12,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:02:12,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:02:12,518 INFO L87 Difference]: Start difference. First operand 5584 states and 9111 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 19:02:35,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:02:35,496 INFO L93 Difference]: Finished difference Result 20599 states and 36877 transitions. [2022-12-13 19:02:35,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 19:02:35,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2022-12-13 19:02:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:02:35,563 INFO L225 Difference]: With dead ends: 20599 [2022-12-13 19:02:35,563 INFO L226 Difference]: Without dead ends: 15101 [2022-12-13 19:02:35,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=215, Invalid=541, Unknown=0, NotChecked=0, Total=756 [2022-12-13 19:02:35,588 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 3134 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 6616 mSolverCounterSat, 1880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3208 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 8496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1880 IncrementalHoareTripleChecker+Valid, 6616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:02:35,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3208 Valid, 2290 Invalid, 8496 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1880 Valid, 6616 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2022-12-13 19:02:35,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15101 states. [2022-12-13 19:02:39,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15101 to 10471. [2022-12-13 19:02:39,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10471 states, 7906 states have (on average 1.527953453073615) internal successors, (12080), 8241 states have internal predecessors, (12080), 2066 states have call successors, (2066), 353 states have call predecessors, (2066), 498 states have return successors, (3511), 2008 states have call predecessors, (3511), 2061 states have call successors, (3511) [2022-12-13 19:02:39,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10471 states to 10471 states and 17657 transitions. [2022-12-13 19:02:39,273 INFO L78 Accepts]: Start accepts. Automaton has 10471 states and 17657 transitions. Word has length 134 [2022-12-13 19:02:39,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:02:39,273 INFO L495 AbstractCegarLoop]: Abstraction has 10471 states and 17657 transitions. [2022-12-13 19:02:39,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 19:02:39,273 INFO L276 IsEmpty]: Start isEmpty. Operand 10471 states and 17657 transitions. [2022-12-13 19:02:39,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-13 19:02:39,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:02:39,277 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:02:39,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 19:02:39,277 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:02:39,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:02:39,277 INFO L85 PathProgramCache]: Analyzing trace with hash -897917224, now seen corresponding path program 1 times [2022-12-13 19:02:39,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:02:39,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912377729] [2022-12-13 19:02:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:39,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:02:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:02:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:02:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:02:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:02:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:02:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:02:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:02:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:02:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:02:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 19:02:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 19:02:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 19:02:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:02:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 19:02:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 19:02:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:39,757 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 19:02:39,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:02:39,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912377729] [2022-12-13 19:02:39,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912377729] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:02:39,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:02:39,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:02:39,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471702072] [2022-12-13 19:02:39,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:02:39,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:02:39,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:02:39,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:02:39,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:02:39,758 INFO L87 Difference]: Start difference. First operand 10471 states and 17657 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 19:03:01,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:03:01,547 INFO L93 Difference]: Finished difference Result 37911 states and 73567 transitions. [2022-12-13 19:03:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 19:03:01,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 142 [2022-12-13 19:03:01,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:03:01,752 INFO L225 Difference]: With dead ends: 37911 [2022-12-13 19:03:01,752 INFO L226 Difference]: Without dead ends: 27518 [2022-12-13 19:03:01,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2022-12-13 19:03:01,822 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 5830 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 3154 mSolverCounterSat, 2176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5905 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 5330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2176 IncrementalHoareTripleChecker+Valid, 3154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:03:01,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5905 Valid, 1779 Invalid, 5330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2176 Valid, 3154 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-12-13 19:03:01,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27518 states. [2022-12-13 19:03:09,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27518 to 18919. [2022-12-13 19:03:09,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18919 states, 14115 states have (on average 1.5235565001771165) internal successors, (21505), 14784 states have internal predecessors, (21505), 3884 states have call successors, (3884), 611 states have call predecessors, (3884), 919 states have return successors, (7577), 3832 states have call predecessors, (7577), 3879 states have call successors, (7577) [2022-12-13 19:03:09,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18919 states to 18919 states and 32966 transitions. [2022-12-13 19:03:09,289 INFO L78 Accepts]: Start accepts. Automaton has 18919 states and 32966 transitions. Word has length 142 [2022-12-13 19:03:09,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:03:09,289 INFO L495 AbstractCegarLoop]: Abstraction has 18919 states and 32966 transitions. [2022-12-13 19:03:09,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 19:03:09,289 INFO L276 IsEmpty]: Start isEmpty. Operand 18919 states and 32966 transitions. [2022-12-13 19:03:09,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 19:03:09,294 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:03:09,294 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:03:09,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 19:03:09,294 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:03:09,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:03:09,294 INFO L85 PathProgramCache]: Analyzing trace with hash -2065759342, now seen corresponding path program 1 times [2022-12-13 19:03:09,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:03:09,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82317669] [2022-12-13 19:03:09,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:03:09,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:03:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:03:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:03:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:03:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:03:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:03:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:03:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:03:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:03:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:03:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 19:03:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 19:03:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 19:03:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:03:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 19:03:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 19:03:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:03:09,917 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 19:03:09,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:03:09,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82317669] [2022-12-13 19:03:09,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82317669] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:03:09,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:03:09,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:03:09,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504244604] [2022-12-13 19:03:09,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:03:09,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:03:09,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:03:09,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:03:09,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:03:09,919 INFO L87 Difference]: Start difference. First operand 18919 states and 32966 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 5 states have internal predecessors, (103), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 19:03:47,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:03:47,501 INFO L93 Difference]: Finished difference Result 74787 states and 166465 transitions. [2022-12-13 19:03:47,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 19:03:47,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 5 states have internal predecessors, (103), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 143 [2022-12-13 19:03:47,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:03:47,944 INFO L225 Difference]: With dead ends: 74787 [2022-12-13 19:03:47,944 INFO L226 Difference]: Without dead ends: 55946 [2022-12-13 19:03:48,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2022-12-13 19:03:48,099 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 5902 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 3257 mSolverCounterSat, 2224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5981 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 5481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2224 IncrementalHoareTripleChecker+Valid, 3257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:03:48,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5981 Valid, 1760 Invalid, 5481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2224 Valid, 3257 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-12-13 19:03:48,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55946 states. [2022-12-13 19:04:04,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55946 to 37382. [2022-12-13 19:04:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37382 states, 27511 states have (on average 1.519864781360183) internal successors, (41813), 28959 states have internal predecessors, (41813), 8037 states have call successors, (8037), 1127 states have call predecessors, (8037), 1833 states have return successors, (19046), 8039 states have call predecessors, (19046), 8032 states have call successors, (19046) [2022-12-13 19:04:04,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37382 states to 37382 states and 68896 transitions. [2022-12-13 19:04:04,431 INFO L78 Accepts]: Start accepts. Automaton has 37382 states and 68896 transitions. Word has length 143 [2022-12-13 19:04:04,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:04:04,431 INFO L495 AbstractCegarLoop]: Abstraction has 37382 states and 68896 transitions. [2022-12-13 19:04:04,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 5 states have internal predecessors, (103), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 19:04:04,431 INFO L276 IsEmpty]: Start isEmpty. Operand 37382 states and 68896 transitions. [2022-12-13 19:04:04,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 19:04:04,441 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:04:04,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:04:04,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 19:04:04,441 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:04:04,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:04:04,442 INFO L85 PathProgramCache]: Analyzing trace with hash 385844570, now seen corresponding path program 1 times [2022-12-13 19:04:04,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:04:04,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796411829] [2022-12-13 19:04:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:04,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:04:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:04,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:04:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:04,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:04:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:04,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:04:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:04,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:04:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:04,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:04:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:04,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:04:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:04,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:04:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:04,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:04:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:04,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:04:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:04,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 19:04:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:04,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 19:04:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:04,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 19:04:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:04,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:04:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:04,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 19:04:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:05,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 19:04:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:05,007 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 19:04:05,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:04:05,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796411829] [2022-12-13 19:04:05,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796411829] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:04:05,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:04:05,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:04:05,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977714627] [2022-12-13 19:04:05,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:04:05,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:04:05,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:04:05,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:04:05,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:04:05,009 INFO L87 Difference]: Start difference. First operand 37382 states and 68896 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 19:05:16,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:16,146 INFO L93 Difference]: Finished difference Result 158710 states and 438828 transitions. [2022-12-13 19:05:16,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 19:05:16,147 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 144 [2022-12-13 19:05:16,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:17,789 INFO L225 Difference]: With dead ends: 158710 [2022-12-13 19:05:17,789 INFO L226 Difference]: Without dead ends: 121406 [2022-12-13 19:05:18,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2022-12-13 19:05:18,265 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 5344 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 3330 mSolverCounterSat, 1920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5423 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 5250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1920 IncrementalHoareTripleChecker+Valid, 3330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:18,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5423 Valid, 2156 Invalid, 5250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1920 Valid, 3330 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-12-13 19:05:18,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121406 states. [2022-12-13 19:05:56,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121406 to 78623. [2022-12-13 19:05:56,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78623 states, 57003 states have (on average 1.516464045751978) internal successors, (86443), 60294 states have internal predecessors, (86443), 17772 states have call successors, (17772), 2159 states have call predecessors, (17772), 3847 states have return successors, (54517), 18008 states have call predecessors, (54517), 17767 states have call successors, (54517) [2022-12-13 19:05:57,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78623 states to 78623 states and 158732 transitions. [2022-12-13 19:05:57,788 INFO L78 Accepts]: Start accepts. Automaton has 78623 states and 158732 transitions. Word has length 144 [2022-12-13 19:05:57,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:57,788 INFO L495 AbstractCegarLoop]: Abstraction has 78623 states and 158732 transitions. [2022-12-13 19:05:57,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 19:05:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand 78623 states and 158732 transitions. [2022-12-13 19:05:57,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 19:05:57,797 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:57,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:05:57,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 19:05:57,797 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:57,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:57,797 INFO L85 PathProgramCache]: Analyzing trace with hash -923841580, now seen corresponding path program 1 times [2022-12-13 19:05:57,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:57,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449606533] [2022-12-13 19:05:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:57,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:57,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:05:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:57,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:05:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:57,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:05:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:05:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:05:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:05:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:05:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:05:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:05:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 19:05:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 19:05:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 19:05:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:05:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 19:05:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 19:05:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 19:05:58,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:58,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449606533] [2022-12-13 19:05:58,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449606533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:58,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:05:58,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:05:58,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132523425] [2022-12-13 19:05:58,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:58,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:05:58,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:58,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:05:58,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:05:58,352 INFO L87 Difference]: Start difference. First operand 78623 states and 158732 transitions. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 5 states have internal predecessors, (105), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 19:08:44,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:08:44,466 INFO L93 Difference]: Finished difference Result 354235 states and 1345661 transitions. [2022-12-13 19:08:44,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 19:08:44,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 5 states have internal predecessors, (105), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 145 [2022-12-13 19:08:44,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:08:51,056 INFO L225 Difference]: With dead ends: 354235 [2022-12-13 19:08:51,057 INFO L226 Difference]: Without dead ends: 275690 [2022-12-13 19:08:52,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2022-12-13 19:08:52,955 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 4607 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 3384 mSolverCounterSat, 1724 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4686 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 5108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1724 IncrementalHoareTripleChecker+Valid, 3384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:08:52,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4686 Valid, 2194 Invalid, 5108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1724 Valid, 3384 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-12-13 19:08:53,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275690 states. [2022-12-13 19:10:48,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275690 to 173184. [2022-12-13 19:10:48,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173184 states, 123607 states have (on average 1.5130615580023785) internal successors, (187025), 131325 states have internal predecessors, (187025), 41203 states have call successors, (41203), 4223 states have call predecessors, (41203), 8373 states have return successors, (175178), 42285 states have call predecessors, (175178), 41198 states have call successors, (175178) [2022-12-13 19:10:51,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173184 states to 173184 states and 403406 transitions. [2022-12-13 19:10:51,191 INFO L78 Accepts]: Start accepts. Automaton has 173184 states and 403406 transitions. Word has length 145 [2022-12-13 19:10:51,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:10:51,192 INFO L495 AbstractCegarLoop]: Abstraction has 173184 states and 403406 transitions. [2022-12-13 19:10:51,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 5 states have internal predecessors, (105), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 19:10:51,192 INFO L276 IsEmpty]: Start isEmpty. Operand 173184 states and 403406 transitions. [2022-12-13 19:10:51,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 19:10:51,202 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:10:51,202 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:10:51,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 19:10:51,202 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:10:51,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:51,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1425564636, now seen corresponding path program 1 times [2022-12-13 19:10:51,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:51,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813705779] [2022-12-13 19:10:51,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:51,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:51,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:10:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:51,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:10:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:51,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:10:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:51,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:10:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:51,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:10:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:51,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:10:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:51,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:10:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:51,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:10:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:51,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:10:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:51,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 19:10:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:51,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 19:10:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:51,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 19:10:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:51,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:10:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:51,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 19:10:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:51,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 19:10:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 19:10:51,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:51,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813705779] [2022-12-13 19:10:51,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813705779] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:10:51,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:10:51,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:10:51,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839756134] [2022-12-13 19:10:51,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:10:51,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:10:51,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:51,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:10:51,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:10:51,778 INFO L87 Difference]: Start difference. First operand 173184 states and 403406 transitions. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 5 states have internal predecessors, (106), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15)