./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/bin/uautomizer-IVEQpCNsaX --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 64bit --witnessprinter.graph.data.programhash 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:32:45,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:32:45,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:32:45,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:32:45,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:32:45,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:32:45,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:32:45,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:32:45,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:32:45,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:32:45,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:32:45,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:32:45,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:32:45,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:32:45,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:32:45,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:32:45,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:32:45,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:32:45,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:32:45,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:32:45,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:32:45,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:32:45,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:32:45,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:32:45,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:32:45,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:32:45,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:32:45,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:32:45,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:32:45,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:32:45,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:32:45,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:32:45,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:32:45,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:32:45,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:32:45,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:32:45,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:32:45,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:32:45,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:32:45,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:32:45,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:32:45,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-09 09:32:46,022 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:32:46,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:32:46,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:32:46,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:32:46,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:32:46,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:32:46,035 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:32:46,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:32:46,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:32:46,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:32:46,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:32:46,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:32:46,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:32:46,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:32:46,038 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:32:46,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:32:46,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:32:46,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:32:46,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:32:46,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:32:46,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:32:46,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:32:46,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:32:46,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:32:46,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:32:46,041 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:32:46,042 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:32:46,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:32:46,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:32:46,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c [2021-11-09 09:32:46,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:32:46,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:32:46,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:32:46,502 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:32:46,503 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:32:46,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i [2021-11-09 09:32:46,592 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/bin/uautomizer-IVEQpCNsaX/data/e658913a4/4f2ce8b338f04a7aa243a04d57625407/FLAG02fe81365 [2021-11-09 09:32:47,644 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:32:47,644 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i [2021-11-09 09:32:47,710 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/bin/uautomizer-IVEQpCNsaX/data/e658913a4/4f2ce8b338f04a7aa243a04d57625407/FLAG02fe81365 [2021-11-09 09:32:48,087 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/bin/uautomizer-IVEQpCNsaX/data/e658913a4/4f2ce8b338f04a7aa243a04d57625407 [2021-11-09 09:32:48,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:32:48,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:32:48,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:32:48,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:32:48,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:32:48,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:32:48" (1/1) ... [2021-11-09 09:32:48,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ce3e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:48, skipping insertion in model container [2021-11-09 09:32:48,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:32:48" (1/1) ... [2021-11-09 09:32:48,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:32:48,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:32:48,727 WARN L228 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_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i[4492,4505] [2021-11-09 09:32:48,742 WARN L228 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_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i[4552,4565] [2021-11-09 09:32:48,772 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-09 09:32:48,779 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-09 09:32:50,120 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:50,121 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:50,122 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:50,123 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:50,125 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:50,140 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:50,141 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:50,144 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:50,144 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:50,651 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-09 09:32:50,653 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-09 09:32:50,654 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-09 09:32:50,656 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-09 09:32:50,658 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-09 09:32:50,659 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-09 09:32:50,660 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-09 09:32:50,664 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-09 09:32:50,665 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-09 09:32:50,666 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-09 09:32:50,857 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-09 09:32:50,994 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:50,995 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:51,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:32:51,231 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:32:51,258 WARN L228 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_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i[4492,4505] [2021-11-09 09:32:51,267 WARN L228 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_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i[4552,4565] [2021-11-09 09:32:51,269 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-09 09:32:51,270 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-09 09:32:51,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:51,309 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:51,310 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:51,310 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:51,311 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:51,320 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:51,320 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:51,322 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:51,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:51,366 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-09 09:32:51,367 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-09 09:32:51,368 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-09 09:32:51,369 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-09 09:32:51,370 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-09 09:32:51,371 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-09 09:32:51,372 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-09 09:32:51,372 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-09 09:32:51,373 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-09 09:32:51,374 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-09 09:32:51,401 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-09 09:32:51,470 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:51,471 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 09:32:51,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:32:51,833 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:32:51,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:51 WrapperNode [2021-11-09 09:32:51,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:32:51,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:32:51,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:32:51,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:32:51,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:51" (1/1) ... [2021-11-09 09:32:51,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:51" (1/1) ... [2021-11-09 09:32:52,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:32:52,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:32:52,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:32:52,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:32:52,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:51" (1/1) ... [2021-11-09 09:32:52,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:51" (1/1) ... [2021-11-09 09:32:52,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:51" (1/1) ... [2021-11-09 09:32:52,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:51" (1/1) ... [2021-11-09 09:32:52,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:51" (1/1) ... [2021-11-09 09:32:52,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:51" (1/1) ... [2021-11-09 09:32:52,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:51" (1/1) ... [2021-11-09 09:32:52,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:32:52,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:32:52,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:32:52,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:32:52,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:51" (1/1) ... [2021-11-09 09:32:52,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:32:52,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:32:52,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:32:52,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101c57cd-ba0a-4629-893c-9ddbcfaf91a6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:32:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 09:32:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:32:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:32:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:32:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:32:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:32:52,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:32:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:32:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:32:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 09:32:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:32:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:33:03,403 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:33:03,403 INFO L299 CfgBuilder]: Removed 104 assume(true) statements. [2021-11-09 09:33:03,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:03 BoogieIcfgContainer [2021-11-09 09:33:03,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:33:03,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:33:03,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:33:03,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:33:03,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:32:48" (1/3) ... [2021-11-09 09:33:03,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2440482e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:33:03, skipping insertion in model container [2021-11-09 09:33:03,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:51" (2/3) ... [2021-11-09 09:33:03,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2440482e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:33:03, skipping insertion in model container [2021-11-09 09:33:03,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:03" (3/3) ... [2021-11-09 09:33:03,415 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_harness.i [2021-11-09 09:33:03,421 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:33:03,421 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-09 09:33:03,496 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:33:03,509 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:33:03,509 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-09 09:33:03,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 193 states, 183 states have (on average 1.46448087431694) internal successors, (268), 192 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:03,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-09 09:33:03,562 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:03,563 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:03,563 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:33:03,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:03,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2073123034, now seen corresponding path program 1 times [2021-11-09 09:33:03,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:03,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236548818] [2021-11-09 09:33:03,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:03,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:04,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:04,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:04,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236548818] [2021-11-09 09:33:04,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236548818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:04,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:04,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:33:04,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342032714] [2021-11-09 09:33:04,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:33:04,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:04,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:33:04,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:33:04,401 INFO L87 Difference]: Start difference. First operand has 193 states, 183 states have (on average 1.46448087431694) internal successors, (268), 192 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:04,454 INFO L93 Difference]: Finished difference Result 382 states and 531 transitions. [2021-11-09 09:33:04,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:33:04,455 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-09 09:33:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:04,469 INFO L225 Difference]: With dead ends: 382 [2021-11-09 09:33:04,470 INFO L226 Difference]: Without dead ends: 186 [2021-11-09 09:33:04,474 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:33:04,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-09 09:33:04,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-11-09 09:33:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 177 states have (on average 1.3389830508474576) internal successors, (237), 185 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:04,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 237 transitions. [2021-11-09 09:33:04,539 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 237 transitions. Word has length 41 [2021-11-09 09:33:04,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:04,539 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 237 transitions. [2021-11-09 09:33:04,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:04,540 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 237 transitions. [2021-11-09 09:33:04,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-09 09:33:04,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:04,552 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:04,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:33:04,553 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:33:04,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:04,554 INFO L85 PathProgramCache]: Analyzing trace with hash 706757656, now seen corresponding path program 1 times [2021-11-09 09:33:04,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:04,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810574022] [2021-11-09 09:33:04,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:04,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:04,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:04,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:04,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810574022] [2021-11-09 09:33:04,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810574022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:04,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:04,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:33:04,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420205535] [2021-11-09 09:33:04,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:33:04,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:04,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:33:04,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:33:04,912 INFO L87 Difference]: Start difference. First operand 186 states and 237 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:05,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:05,151 INFO L93 Difference]: Finished difference Result 351 states and 447 transitions. [2021-11-09 09:33:05,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:33:05,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-09 09:33:05,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:05,154 INFO L225 Difference]: With dead ends: 351 [2021-11-09 09:33:05,154 INFO L226 Difference]: Without dead ends: 186 [2021-11-09 09:33:05,155 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:33:05,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-09 09:33:05,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-11-09 09:33:05,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 177 states have (on average 1.3220338983050848) internal successors, (234), 185 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:05,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 234 transitions. [2021-11-09 09:33:05,173 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 234 transitions. Word has length 41 [2021-11-09 09:33:05,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:05,174 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 234 transitions. [2021-11-09 09:33:05,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 234 transitions. [2021-11-09 09:33:05,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-09 09:33:05,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:05,180 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:05,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:33:05,181 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:33:05,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:05,182 INFO L85 PathProgramCache]: Analyzing trace with hash 115187874, now seen corresponding path program 1 times [2021-11-09 09:33:05,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:05,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538756482] [2021-11-09 09:33:05,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:05,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:05,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:05,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538756482] [2021-11-09 09:33:05,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538756482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:05,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:05,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:33:05,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280286121] [2021-11-09 09:33:05,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:33:05,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:05,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:33:05,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:33:05,876 INFO L87 Difference]: Start difference. First operand 186 states and 234 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:06,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:06,249 INFO L93 Difference]: Finished difference Result 270 states and 336 transitions. [2021-11-09 09:33:06,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:33:06,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-09 09:33:06,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:06,251 INFO L225 Difference]: With dead ends: 270 [2021-11-09 09:33:06,251 INFO L226 Difference]: Without dead ends: 186 [2021-11-09 09:33:06,252 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:33:06,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-09 09:33:06,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-11-09 09:33:06,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 177 states have (on average 1.3163841807909604) internal successors, (233), 185 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:06,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 233 transitions. [2021-11-09 09:33:06,263 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 233 transitions. Word has length 45 [2021-11-09 09:33:06,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:06,263 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 233 transitions. [2021-11-09 09:33:06,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:06,264 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 233 transitions. [2021-11-09 09:33:06,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-09 09:33:06,276 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:06,276 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:06,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:33:06,276 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:33:06,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:06,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1630129501, now seen corresponding path program 1 times [2021-11-09 09:33:06,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:06,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057818140] [2021-11-09 09:33:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:06,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:06,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:06,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057818140] [2021-11-09 09:33:06,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057818140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:06,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:06,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:33:06,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451748467] [2021-11-09 09:33:06,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:33:06,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:06,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:33:06,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:33:06,697 INFO L87 Difference]: Start difference. First operand 186 states and 233 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:06,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:06,970 INFO L93 Difference]: Finished difference Result 326 states and 408 transitions. [2021-11-09 09:33:06,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:33:06,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-09 09:33:06,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:06,972 INFO L225 Difference]: With dead ends: 326 [2021-11-09 09:33:06,972 INFO L226 Difference]: Without dead ends: 186 [2021-11-09 09:33:06,973 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:33:06,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-09 09:33:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-11-09 09:33:06,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 177 states have (on average 1.2937853107344632) internal successors, (229), 185 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 229 transitions. [2021-11-09 09:33:06,992 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 229 transitions. Word has length 47 [2021-11-09 09:33:06,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:06,994 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 229 transitions. [2021-11-09 09:33:06,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:06,995 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 229 transitions. [2021-11-09 09:33:06,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-09 09:33:06,995 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:06,996 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:06,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:33:06,996 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:33:06,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:06,999 INFO L85 PathProgramCache]: Analyzing trace with hash -240029768, now seen corresponding path program 1 times [2021-11-09 09:33:07,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:07,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136214992] [2021-11-09 09:33:07,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:07,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:07,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:07,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136214992] [2021-11-09 09:33:07,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136214992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:07,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:07,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:33:07,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067708910] [2021-11-09 09:33:07,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:33:07,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:07,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:33:07,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:33:07,790 INFO L87 Difference]: Start difference. First operand 186 states and 229 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:08,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:08,649 INFO L93 Difference]: Finished difference Result 343 states and 408 transitions. [2021-11-09 09:33:08,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:33:08,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-09 09:33:08,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:08,652 INFO L225 Difference]: With dead ends: 343 [2021-11-09 09:33:08,652 INFO L226 Difference]: Without dead ends: 335 [2021-11-09 09:33:08,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:33:08,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-09 09:33:08,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 202. [2021-11-09 09:33:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 193 states have (on average 1.2694300518134716) internal successors, (245), 201 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:08,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 245 transitions. [2021-11-09 09:33:08,665 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 245 transitions. Word has length 49 [2021-11-09 09:33:08,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:08,666 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 245 transitions. [2021-11-09 09:33:08,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:08,666 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 245 transitions. [2021-11-09 09:33:08,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-09 09:33:08,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:08,667 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:08,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:33:08,668 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:33:08,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:08,668 INFO L85 PathProgramCache]: Analyzing trace with hash -378318224, now seen corresponding path program 1 times [2021-11-09 09:33:08,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:08,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704325520] [2021-11-09 09:33:08,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:08,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:09,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:09,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704325520] [2021-11-09 09:33:09,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704325520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:09,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:09,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:33:09,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488076175] [2021-11-09 09:33:09,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:33:09,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:33:09,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:33:09,953 INFO L87 Difference]: Start difference. First operand 202 states and 245 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:20,085 INFO L93 Difference]: Finished difference Result 436 states and 521 transitions. [2021-11-09 09:33:20,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:33:20,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-09 09:33:20,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:20,088 INFO L225 Difference]: With dead ends: 436 [2021-11-09 09:33:20,089 INFO L226 Difference]: Without dead ends: 333 [2021-11-09 09:33:20,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:33:20,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-09 09:33:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 228. [2021-11-09 09:33:20,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 219 states have (on average 1.264840182648402) internal successors, (277), 227 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 277 transitions. [2021-11-09 09:33:20,102 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 277 transitions. Word has length 53 [2021-11-09 09:33:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:20,103 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 277 transitions. [2021-11-09 09:33:20,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:20,103 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 277 transitions. [2021-11-09 09:33:20,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-09 09:33:20,104 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:20,104 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:20,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 09:33:20,105 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:33:20,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:20,105 INFO L85 PathProgramCache]: Analyzing trace with hash 124564344, now seen corresponding path program 1 times [2021-11-09 09:33:20,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:20,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556582972] [2021-11-09 09:33:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:20,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:20,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:20,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556582972] [2021-11-09 09:33:20,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556582972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:20,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:20,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:33:20,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427791530] [2021-11-09 09:33:20,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:33:20,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:33:20,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:33:20,948 INFO L87 Difference]: Start difference. First operand 228 states and 277 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:22,026 INFO L93 Difference]: Finished difference Result 522 states and 619 transitions. [2021-11-09 09:33:22,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:33:22,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-09 09:33:22,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:22,034 INFO L225 Difference]: With dead ends: 522 [2021-11-09 09:33:22,035 INFO L226 Difference]: Without dead ends: 293 [2021-11-09 09:33:22,036 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:33:22,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-09 09:33:22,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 228. [2021-11-09 09:33:22,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 219 states have (on average 1.2420091324200913) internal successors, (272), 227 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:22,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 272 transitions. [2021-11-09 09:33:22,048 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 272 transitions. Word has length 57 [2021-11-09 09:33:22,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:22,048 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 272 transitions. [2021-11-09 09:33:22,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:22,049 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 272 transitions. [2021-11-09 09:33:22,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-09 09:33:22,050 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:22,050 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:22,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:33:22,050 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:33:22,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:22,051 INFO L85 PathProgramCache]: Analyzing trace with hash 615207645, now seen corresponding path program 1 times [2021-11-09 09:33:22,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:22,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174051746] [2021-11-09 09:33:22,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:22,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:22,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:22,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174051746] [2021-11-09 09:33:22,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174051746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:22,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:22,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:33:22,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031042166] [2021-11-09 09:33:22,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:33:22,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:22,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:33:22,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:33:22,989 INFO L87 Difference]: Start difference. First operand 228 states and 272 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:28,271 INFO L93 Difference]: Finished difference Result 525 states and 621 transitions. [2021-11-09 09:33:28,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:33:28,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-09 09:33:28,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:28,274 INFO L225 Difference]: With dead ends: 525 [2021-11-09 09:33:28,274 INFO L226 Difference]: Without dead ends: 315 [2021-11-09 09:33:28,275 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:33:28,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-11-09 09:33:28,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 228. [2021-11-09 09:33:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 219 states have (on average 1.2009132420091324) internal successors, (263), 227 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 263 transitions. [2021-11-09 09:33:28,288 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 263 transitions. Word has length 59 [2021-11-09 09:33:28,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:28,288 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 263 transitions. [2021-11-09 09:33:28,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,289 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 263 transitions. [2021-11-09 09:33:28,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-09 09:33:28,290 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:28,290 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:28,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:33:28,291 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:33:28,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:28,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1316807519, now seen corresponding path program 1 times [2021-11-09 09:33:28,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:28,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562867564] [2021-11-09 09:33:28,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:28,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:29,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:29,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562867564] [2021-11-09 09:33:29,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562867564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:29,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:29,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-09 09:33:29,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077191569] [2021-11-09 09:33:29,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 09:33:29,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:29,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 09:33:29,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:33:29,750 INFO L87 Difference]: Start difference. First operand 228 states and 263 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:48,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:48,348 INFO L93 Difference]: Finished difference Result 872 states and 1002 transitions. [2021-11-09 09:33:48,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 09:33:48,348 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-09 09:33:48,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:48,353 INFO L225 Difference]: With dead ends: 872 [2021-11-09 09:33:48,353 INFO L226 Difference]: Without dead ends: 696 [2021-11-09 09:33:48,355 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=304, Invalid=818, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 09:33:48,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-11-09 09:33:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 351. [2021-11-09 09:33:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 342 states have (on average 1.2017543859649122) internal successors, (411), 350 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 411 transitions. [2021-11-09 09:33:48,379 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 411 transitions. Word has length 59 [2021-11-09 09:33:48,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:48,379 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 411 transitions. [2021-11-09 09:33:48,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:48,380 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 411 transitions. [2021-11-09 09:33:48,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-09 09:33:48,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:48,381 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:48,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 09:33:48,381 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:33:48,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:48,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1417505159, now seen corresponding path program 1 times [2021-11-09 09:33:48,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:48,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765911665] [2021-11-09 09:33:48,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:48,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:48,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:48,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765911665] [2021-11-09 09:33:48,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765911665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:48,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:48,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:33:48,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999014592] [2021-11-09 09:33:48,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:33:48,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:48,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:33:48,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:33:48,867 INFO L87 Difference]: Start difference. First operand 351 states and 411 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:49,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:49,045 INFO L93 Difference]: Finished difference Result 615 states and 718 transitions. [2021-11-09 09:33:49,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:33:49,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-09 09:33:49,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:49,049 INFO L225 Difference]: With dead ends: 615 [2021-11-09 09:33:49,049 INFO L226 Difference]: Without dead ends: 511 [2021-11-09 09:33:49,050 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:33:49,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-11-09 09:33:49,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 442. [2021-11-09 09:33:49,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 433 states have (on average 1.1963048498845266) internal successors, (518), 441 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 518 transitions. [2021-11-09 09:33:49,081 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 518 transitions. Word has length 60 [2021-11-09 09:33:49,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:49,082 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 518 transitions. [2021-11-09 09:33:49,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:49,082 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 518 transitions. [2021-11-09 09:33:49,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-09 09:33:49,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:49,083 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:49,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 09:33:49,084 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:33:49,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:49,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1588567226, now seen corresponding path program 1 times [2021-11-09 09:33:49,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:49,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573345282] [2021-11-09 09:33:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:49,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:50,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:50,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573345282] [2021-11-09 09:33:50,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573345282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:50,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:50,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 09:33:50,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841623886] [2021-11-09 09:33:50,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:33:50,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:50,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:33:50,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:33:50,058 INFO L87 Difference]: Start difference. First operand 442 states and 518 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:03,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:03,195 INFO L93 Difference]: Finished difference Result 624 states and 708 transitions. [2021-11-09 09:34:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:34:03,196 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-09 09:34:03,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:03,200 INFO L225 Difference]: With dead ends: 624 [2021-11-09 09:34:03,200 INFO L226 Difference]: Without dead ends: 507 [2021-11-09 09:34:03,202 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:34:03,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-09 09:34:03,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 416. [2021-11-09 09:34:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 407 states have (on average 1.1842751842751842) internal successors, (482), 415 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:03,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 482 transitions. [2021-11-09 09:34:03,229 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 482 transitions. Word has length 60 [2021-11-09 09:34:03,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:03,230 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 482 transitions. [2021-11-09 09:34:03,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:03,230 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 482 transitions. [2021-11-09 09:34:03,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 09:34:03,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:03,231 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:03,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 09:34:03,232 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:34:03,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:03,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1830554959, now seen corresponding path program 1 times [2021-11-09 09:34:03,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:03,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971896123] [2021-11-09 09:34:03,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:03,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:06,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:06,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971896123] [2021-11-09 09:34:06,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971896123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:06,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:06,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:34:06,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019071490] [2021-11-09 09:34:06,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:34:06,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:06,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:34:06,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:34:06,160 INFO L87 Difference]: Start difference. First operand 416 states and 482 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:11,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:11,394 INFO L93 Difference]: Finished difference Result 993 states and 1161 transitions. [2021-11-09 09:34:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:34:11,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-09 09:34:11,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:11,400 INFO L225 Difference]: With dead ends: 993 [2021-11-09 09:34:11,400 INFO L226 Difference]: Without dead ends: 991 [2021-11-09 09:34:11,401 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:34:11,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2021-11-09 09:34:11,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 541. [2021-11-09 09:34:11,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 532 states have (on average 1.1879699248120301) internal successors, (632), 540 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:11,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 632 transitions. [2021-11-09 09:34:11,435 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 632 transitions. Word has length 61 [2021-11-09 09:34:11,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:11,435 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 632 transitions. [2021-11-09 09:34:11,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:11,436 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 632 transitions. [2021-11-09 09:34:11,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:34:11,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:11,440 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:11,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 09:34:11,440 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:34:11,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:11,441 INFO L85 PathProgramCache]: Analyzing trace with hash -858774998, now seen corresponding path program 1 times [2021-11-09 09:34:11,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:11,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008257001] [2021-11-09 09:34:11,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:11,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:12,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:12,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:12,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008257001] [2021-11-09 09:34:12,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008257001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:12,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:12,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:34:12,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280858366] [2021-11-09 09:34:12,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:34:12,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:12,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:34:12,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:34:12,506 INFO L87 Difference]: Start difference. First operand 541 states and 632 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:19,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:19,901 INFO L93 Difference]: Finished difference Result 642 states and 738 transitions. [2021-11-09 09:34:19,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:34:19,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-09 09:34:19,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:19,905 INFO L225 Difference]: With dead ends: 642 [2021-11-09 09:34:19,905 INFO L226 Difference]: Without dead ends: 572 [2021-11-09 09:34:19,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:34:19,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-11-09 09:34:19,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 525. [2021-11-09 09:34:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 516 states have (on average 1.178294573643411) internal successors, (608), 524 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 608 transitions. [2021-11-09 09:34:19,936 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 608 transitions. Word has length 64 [2021-11-09 09:34:19,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:19,936 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 608 transitions. [2021-11-09 09:34:19,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:19,937 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 608 transitions. [2021-11-09 09:34:19,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-09 09:34:19,938 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:19,938 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:19,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 09:34:19,939 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:34:19,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:19,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1777825486, now seen corresponding path program 1 times [2021-11-09 09:34:19,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:19,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139867239] [2021-11-09 09:34:19,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:19,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:20,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:20,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139867239] [2021-11-09 09:34:20,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139867239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:20,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:20,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 09:34:20,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985324277] [2021-11-09 09:34:20,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:34:20,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:20,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:34:20,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:34:20,990 INFO L87 Difference]: Start difference. First operand 525 states and 608 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:30,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:30,660 INFO L93 Difference]: Finished difference Result 956 states and 1102 transitions. [2021-11-09 09:34:30,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 09:34:30,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-09 09:34:30,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:30,665 INFO L225 Difference]: With dead ends: 956 [2021-11-09 09:34:30,666 INFO L226 Difference]: Without dead ends: 731 [2021-11-09 09:34:30,667 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:34:30,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-11-09 09:34:30,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 608. [2021-11-09 09:34:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 599 states have (on average 1.1736227045075125) internal successors, (703), 607 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 703 transitions. [2021-11-09 09:34:30,704 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 703 transitions. Word has length 65 [2021-11-09 09:34:30,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:30,704 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 703 transitions. [2021-11-09 09:34:30,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:30,705 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 703 transitions. [2021-11-09 09:34:30,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 09:34:30,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:30,706 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:30,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 09:34:30,707 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:34:30,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:30,707 INFO L85 PathProgramCache]: Analyzing trace with hash 707587921, now seen corresponding path program 1 times [2021-11-09 09:34:30,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:30,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144657488] [2021-11-09 09:34:30,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:30,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:32,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:32,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144657488] [2021-11-09 09:34:32,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144657488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:32,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:32,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-09 09:34:32,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093201555] [2021-11-09 09:34:32,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:34:32,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:32,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:34:32,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:34:32,237 INFO L87 Difference]: Start difference. First operand 608 states and 703 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:00,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:00,799 INFO L93 Difference]: Finished difference Result 1570 states and 1807 transitions. [2021-11-09 09:35:00,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 09:35:00,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-09 09:35:00,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:00,810 INFO L225 Difference]: With dead ends: 1570 [2021-11-09 09:35:00,810 INFO L226 Difference]: Without dead ends: 1318 [2021-11-09 09:35:00,812 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=409, Invalid=997, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 09:35:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2021-11-09 09:35:00,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 623. [2021-11-09 09:35:00,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 614 states have (on average 1.1710097719869708) internal successors, (719), 622 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:00,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 719 transitions. [2021-11-09 09:35:00,861 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 719 transitions. Word has length 68 [2021-11-09 09:35:00,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:00,861 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 719 transitions. [2021-11-09 09:35:00,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:00,862 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 719 transitions. [2021-11-09 09:35:00,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 09:35:00,863 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:00,863 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:00,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 09:35:00,864 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:35:00,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:00,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1852400669, now seen corresponding path program 1 times [2021-11-09 09:35:00,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:00,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611697476] [2021-11-09 09:35:00,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:00,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:02,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:02,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611697476] [2021-11-09 09:35:02,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611697476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:02,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:02,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 09:35:02,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539583658] [2021-11-09 09:35:02,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:35:02,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:02,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:35:02,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:35:02,628 INFO L87 Difference]: Start difference. First operand 623 states and 719 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:16,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:16,445 INFO L93 Difference]: Finished difference Result 1272 states and 1457 transitions. [2021-11-09 09:35:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 09:35:16,446 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-09 09:35:16,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:16,452 INFO L225 Difference]: With dead ends: 1272 [2021-11-09 09:35:16,452 INFO L226 Difference]: Without dead ends: 1007 [2021-11-09 09:35:16,454 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:35:16,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2021-11-09 09:35:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 623. [2021-11-09 09:35:16,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 614 states have (on average 1.1693811074918568) internal successors, (718), 622 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:16,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 718 transitions. [2021-11-09 09:35:16,505 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 718 transitions. Word has length 68 [2021-11-09 09:35:16,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:16,505 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 718 transitions. [2021-11-09 09:35:16,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:16,506 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 718 transitions. [2021-11-09 09:35:16,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:35:16,507 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:16,507 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:16,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 09:35:16,508 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:35:16,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:16,509 INFO L85 PathProgramCache]: Analyzing trace with hash -117371128, now seen corresponding path program 1 times [2021-11-09 09:35:16,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:16,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715363371] [2021-11-09 09:35:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:16,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:18,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:18,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715363371] [2021-11-09 09:35:18,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715363371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:18,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:18,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-09 09:35:18,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310566765] [2021-11-09 09:35:18,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 09:35:18,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:18,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 09:35:18,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:35:18,171 INFO L87 Difference]: Start difference. First operand 623 states and 718 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:42,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:42,346 INFO L93 Difference]: Finished difference Result 1375 states and 1576 transitions. [2021-11-09 09:35:42,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:35:42,347 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-09 09:35:42,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:42,351 INFO L225 Difference]: With dead ends: 1375 [2021-11-09 09:35:42,352 INFO L226 Difference]: Without dead ends: 1274 [2021-11-09 09:35:42,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=252, Invalid=740, Unknown=0, NotChecked=0, Total=992 [2021-11-09 09:35:42,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-11-09 09:35:42,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 633. [2021-11-09 09:35:42,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 624 states have (on average 1.1666666666666667) internal successors, (728), 632 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:42,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 728 transitions. [2021-11-09 09:35:42,402 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 728 transitions. Word has length 69 [2021-11-09 09:35:42,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:42,403 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 728 transitions. [2021-11-09 09:35:42,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:42,403 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 728 transitions. [2021-11-09 09:35:42,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 09:35:42,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:42,405 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:42,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 09:35:42,405 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:35:42,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:42,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1119930915, now seen corresponding path program 1 times [2021-11-09 09:35:42,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:42,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038013419] [2021-11-09 09:35:42,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:42,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:44,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:44,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038013419] [2021-11-09 09:35:44,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038013419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:44,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:44,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 09:35:44,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666495683] [2021-11-09 09:35:44,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:35:44,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:44,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:35:44,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:35:44,532 INFO L87 Difference]: Start difference. First operand 633 states and 728 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:00,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:00,743 INFO L93 Difference]: Finished difference Result 1091 states and 1240 transitions. [2021-11-09 09:36:00,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 09:36:00,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-09 09:36:00,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:00,748 INFO L225 Difference]: With dead ends: 1091 [2021-11-09 09:36:00,748 INFO L226 Difference]: Without dead ends: 997 [2021-11-09 09:36:00,749 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:36:00,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-11-09 09:36:00,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 613. [2021-11-09 09:36:00,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 604 states have (on average 1.1705298013245033) internal successors, (707), 612 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:00,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 707 transitions. [2021-11-09 09:36:00,799 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 707 transitions. Word has length 70 [2021-11-09 09:36:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:00,800 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 707 transitions. [2021-11-09 09:36:00,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:00,800 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 707 transitions. [2021-11-09 09:36:00,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-09 09:36:00,802 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:00,802 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:36:00,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 09:36:00,802 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:36:00,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:00,803 INFO L85 PathProgramCache]: Analyzing trace with hash -52660038, now seen corresponding path program 1 times [2021-11-09 09:36:00,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:00,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762810114] [2021-11-09 09:36:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:00,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:36:02,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:02,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762810114] [2021-11-09 09:36:02,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762810114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:02,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:02,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 09:36:02,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005032267] [2021-11-09 09:36:02,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:36:02,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:02,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:36:02,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:36:02,279 INFO L87 Difference]: Start difference. First operand 613 states and 707 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:18,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:18,877 INFO L93 Difference]: Finished difference Result 1086 states and 1260 transitions. [2021-11-09 09:36:18,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:36:18,878 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-09 09:36:18,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:18,881 INFO L225 Difference]: With dead ends: 1086 [2021-11-09 09:36:18,881 INFO L226 Difference]: Without dead ends: 859 [2021-11-09 09:36:18,882 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-11-09 09:36:18,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-11-09 09:36:18,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 728. [2021-11-09 09:36:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 719 states have (on average 1.1655076495132128) internal successors, (838), 727 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:18,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 838 transitions. [2021-11-09 09:36:18,937 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 838 transitions. Word has length 71 [2021-11-09 09:36:18,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:18,937 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 838 transitions. [2021-11-09 09:36:18,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:18,938 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 838 transitions. [2021-11-09 09:36:18,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-09 09:36:18,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:18,940 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:36:18,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 09:36:18,940 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:36:18,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:18,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1713868031, now seen corresponding path program 1 times [2021-11-09 09:36:18,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:18,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007601925] [2021-11-09 09:36:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:18,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:36:23,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:23,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007601925] [2021-11-09 09:36:23,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007601925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:23,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:23,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-09 09:36:23,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82322305] [2021-11-09 09:36:23,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:36:23,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:23,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:36:23,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:36:23,343 INFO L87 Difference]: Start difference. First operand 728 states and 838 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:42,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:42,140 INFO L93 Difference]: Finished difference Result 964 states and 1083 transitions. [2021-11-09 09:36:42,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-09 09:36:42,141 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-09 09:36:42,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:42,144 INFO L225 Difference]: With dead ends: 964 [2021-11-09 09:36:42,144 INFO L226 Difference]: Without dead ends: 883 [2021-11-09 09:36:42,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=386, Invalid=874, Unknown=0, NotChecked=0, Total=1260 [2021-11-09 09:36:42,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-11-09 09:36:42,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 695. [2021-11-09 09:36:42,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 686 states have (on average 1.161807580174927) internal successors, (797), 694 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 797 transitions. [2021-11-09 09:36:42,205 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 797 transitions. Word has length 71 [2021-11-09 09:36:42,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:42,205 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 797 transitions. [2021-11-09 09:36:42,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 797 transitions. [2021-11-09 09:36:42,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 09:36:42,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:42,208 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:36:42,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-09 09:36:42,208 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:36:42,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:42,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1554755430, now seen corresponding path program 1 times [2021-11-09 09:36:42,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:42,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379025967] [2021-11-09 09:36:42,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:42,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:36:43,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:43,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379025967] [2021-11-09 09:36:43,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379025967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:43,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:43,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 09:36:43,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093491074] [2021-11-09 09:36:43,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:36:43,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:43,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:36:43,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:36:43,398 INFO L87 Difference]: Start difference. First operand 695 states and 797 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:54,861 INFO L93 Difference]: Finished difference Result 1058 states and 1204 transitions. [2021-11-09 09:36:54,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 09:36:54,862 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-09 09:36:54,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:54,865 INFO L225 Difference]: With dead ends: 1058 [2021-11-09 09:36:54,866 INFO L226 Difference]: Without dead ends: 948 [2021-11-09 09:36:54,866 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2021-11-09 09:36:54,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2021-11-09 09:36:54,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 616. [2021-11-09 09:36:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 607 states have (on average 1.1647446457990116) internal successors, (707), 615 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:54,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 707 transitions. [2021-11-09 09:36:54,907 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 707 transitions. Word has length 72 [2021-11-09 09:36:54,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:54,908 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 707 transitions. [2021-11-09 09:36:54,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:54,908 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 707 transitions. [2021-11-09 09:36:54,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 09:36:54,910 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:54,910 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:36:54,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-09 09:36:54,910 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:36:54,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:54,911 INFO L85 PathProgramCache]: Analyzing trace with hash -285115433, now seen corresponding path program 1 times [2021-11-09 09:36:54,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:54,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269591551] [2021-11-09 09:36:54,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:54,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:36:55,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:55,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269591551] [2021-11-09 09:36:55,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269591551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:55,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:55,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:36:55,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298000848] [2021-11-09 09:36:55,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:36:55,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:55,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:36:55,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:36:55,650 INFO L87 Difference]: Start difference. First operand 616 states and 707 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:05,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:37:05,449 INFO L93 Difference]: Finished difference Result 958 states and 1094 transitions. [2021-11-09 09:37:05,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 09:37:05,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-09 09:37:05,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:37:05,453 INFO L225 Difference]: With dead ends: 958 [2021-11-09 09:37:05,453 INFO L226 Difference]: Without dead ends: 772 [2021-11-09 09:37:05,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:37:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-11-09 09:37:05,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 616. [2021-11-09 09:37:05,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 607 states have (on average 1.1598023064250411) internal successors, (704), 615 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:05,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 704 transitions. [2021-11-09 09:37:05,505 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 704 transitions. Word has length 72 [2021-11-09 09:37:05,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:37:05,505 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 704 transitions. [2021-11-09 09:37:05,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:05,506 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 704 transitions. [2021-11-09 09:37:05,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 09:37:05,508 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:37:05,508 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:05,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-09 09:37:05,508 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:37:05,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:05,509 INFO L85 PathProgramCache]: Analyzing trace with hash -871921447, now seen corresponding path program 1 times [2021-11-09 09:37:05,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:05,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068159564] [2021-11-09 09:37:05,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:05,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:37:08,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:08,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068159564] [2021-11-09 09:37:08,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068159564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:08,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:08,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 09:37:08,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613734788] [2021-11-09 09:37:08,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:37:08,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:08,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:37:08,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:37:08,193 INFO L87 Difference]: Start difference. First operand 616 states and 704 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:37:11,160 INFO L93 Difference]: Finished difference Result 1409 states and 1618 transitions. [2021-11-09 09:37:11,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 09:37:11,160 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-09 09:37:11,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:37:11,164 INFO L225 Difference]: With dead ends: 1409 [2021-11-09 09:37:11,164 INFO L226 Difference]: Without dead ends: 885 [2021-11-09 09:37:11,164 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:37:11,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2021-11-09 09:37:11,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 620. [2021-11-09 09:37:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 611 states have (on average 1.1587561374795416) internal successors, (708), 619 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:11,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 708 transitions. [2021-11-09 09:37:11,219 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 708 transitions. Word has length 72 [2021-11-09 09:37:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:37:11,219 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 708 transitions. [2021-11-09 09:37:11,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:11,220 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 708 transitions. [2021-11-09 09:37:11,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-09 09:37:11,221 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:37:11,221 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:11,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-09 09:37:11,222 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:37:11,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:11,222 INFO L85 PathProgramCache]: Analyzing trace with hash -590596247, now seen corresponding path program 1 times [2021-11-09 09:37:11,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:11,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880286537] [2021-11-09 09:37:11,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:11,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:37:12,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:12,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880286537] [2021-11-09 09:37:12,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880286537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:12,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:12,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 09:37:12,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202250019] [2021-11-09 09:37:12,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:37:12,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:12,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:37:12,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:37:12,568 INFO L87 Difference]: Start difference. First operand 620 states and 708 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:24,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:37:24,216 INFO L93 Difference]: Finished difference Result 1493 states and 1701 transitions. [2021-11-09 09:37:24,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:37:24,217 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-09 09:37:24,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:37:24,221 INFO L225 Difference]: With dead ends: 1493 [2021-11-09 09:37:24,221 INFO L226 Difference]: Without dead ends: 1108 [2021-11-09 09:37:24,222 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=218, Invalid=712, Unknown=0, NotChecked=0, Total=930 [2021-11-09 09:37:24,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-11-09 09:37:24,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 650. [2021-11-09 09:37:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 641 states have (on average 1.1575663026521061) internal successors, (742), 649 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:24,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 742 transitions. [2021-11-09 09:37:24,277 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 742 transitions. Word has length 73 [2021-11-09 09:37:24,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:37:24,277 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 742 transitions. [2021-11-09 09:37:24,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:24,278 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 742 transitions. [2021-11-09 09:37:24,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-09 09:37:24,279 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:37:24,280 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:24,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-09 09:37:24,280 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:37:24,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:24,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1706374672, now seen corresponding path program 1 times [2021-11-09 09:37:24,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:24,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125788025] [2021-11-09 09:37:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:24,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:37:25,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:25,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125788025] [2021-11-09 09:37:25,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125788025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:25,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:25,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 09:37:25,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749589619] [2021-11-09 09:37:25,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:37:25,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:25,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:37:25,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:37:25,146 INFO L87 Difference]: Start difference. First operand 650 states and 742 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:35,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:37:35,590 INFO L93 Difference]: Finished difference Result 1247 states and 1423 transitions. [2021-11-09 09:37:35,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:37:35,591 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-09 09:37:35,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:37:35,594 INFO L225 Difference]: With dead ends: 1247 [2021-11-09 09:37:35,594 INFO L226 Difference]: Without dead ends: 890 [2021-11-09 09:37:35,595 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:37:35,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-11-09 09:37:35,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 810. [2021-11-09 09:37:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 801 states have (on average 1.1573033707865168) internal successors, (927), 809 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:35,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 927 transitions. [2021-11-09 09:37:35,645 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 927 transitions. Word has length 74 [2021-11-09 09:37:35,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:37:35,646 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 927 transitions. [2021-11-09 09:37:35,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:35,646 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 927 transitions. [2021-11-09 09:37:35,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 09:37:35,648 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:37:35,648 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:35,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-09 09:37:35,649 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:37:35,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:35,649 INFO L85 PathProgramCache]: Analyzing trace with hash -894538693, now seen corresponding path program 1 times [2021-11-09 09:37:35,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:35,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467089155] [2021-11-09 09:37:35,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:35,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:38,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:37:38,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:38,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467089155] [2021-11-09 09:37:38,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467089155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:38,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:38,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:37:38,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454414857] [2021-11-09 09:37:38,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:37:38,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:38,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:37:38,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:37:38,579 INFO L87 Difference]: Start difference. First operand 810 states and 927 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:51,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:37:51,934 INFO L93 Difference]: Finished difference Result 942 states and 1058 transitions. [2021-11-09 09:37:51,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 09:37:51,935 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-09 09:37:51,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:37:51,939 INFO L225 Difference]: With dead ends: 942 [2021-11-09 09:37:51,939 INFO L226 Difference]: Without dead ends: 940 [2021-11-09 09:37:51,940 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-09 09:37:51,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-11-09 09:37:51,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 810. [2021-11-09 09:37:51,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 801 states have (on average 1.1573033707865168) internal successors, (927), 809 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 927 transitions. [2021-11-09 09:37:51,998 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 927 transitions. Word has length 75 [2021-11-09 09:37:51,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:37:51,999 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 927 transitions. [2021-11-09 09:37:51,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:51,999 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 927 transitions. [2021-11-09 09:37:52,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 09:37:52,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:37:52,001 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:52,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-09 09:37:52,002 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:37:52,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:52,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1712187143, now seen corresponding path program 1 times [2021-11-09 09:37:52,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:52,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101095715] [2021-11-09 09:37:52,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:52,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:37:52,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:52,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101095715] [2021-11-09 09:37:52,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101095715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:52,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:52,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 09:37:52,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221168476] [2021-11-09 09:37:52,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:37:52,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:52,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:37:52,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:37:52,805 INFO L87 Difference]: Start difference. First operand 810 states and 927 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:58,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:37:58,905 INFO L93 Difference]: Finished difference Result 1107 states and 1235 transitions. [2021-11-09 09:37:58,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 09:37:58,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-09 09:37:58,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:37:58,909 INFO L225 Difference]: With dead ends: 1107 [2021-11-09 09:37:58,909 INFO L226 Difference]: Without dead ends: 997 [2021-11-09 09:37:58,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:37:58,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-11-09 09:37:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 753. [2021-11-09 09:37:58,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 744 states have (on average 1.1505376344086022) internal successors, (856), 752 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 856 transitions. [2021-11-09 09:37:58,954 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 856 transitions. Word has length 75 [2021-11-09 09:37:58,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:37:58,955 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 856 transitions. [2021-11-09 09:37:58,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:58,955 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 856 transitions. [2021-11-09 09:37:58,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 09:37:58,957 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:37:58,957 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:58,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-09 09:37:58,958 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:37:58,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:58,958 INFO L85 PathProgramCache]: Analyzing trace with hash -682364274, now seen corresponding path program 1 times [2021-11-09 09:37:58,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:58,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697885820] [2021-11-09 09:37:58,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:58,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:38:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:38:02,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:38:02,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:38:02,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697885820] [2021-11-09 09:38:02,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697885820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:38:02,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:38:02,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 09:38:02,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973631810] [2021-11-09 09:38:02,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:38:02,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:38:02,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:38:02,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:38:02,545 INFO L87 Difference]: Start difference. First operand 753 states and 856 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:13,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:38:13,847 INFO L93 Difference]: Finished difference Result 1454 states and 1617 transitions. [2021-11-09 09:38:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 09:38:13,847 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-09 09:38:13,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:38:13,853 INFO L225 Difference]: With dead ends: 1454 [2021-11-09 09:38:13,853 INFO L226 Difference]: Without dead ends: 1290 [2021-11-09 09:38:13,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:38:13,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2021-11-09 09:38:13,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 666. [2021-11-09 09:38:13,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 657 states have (on average 1.1445966514459665) internal successors, (752), 665 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:13,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 752 transitions. [2021-11-09 09:38:13,919 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 752 transitions. Word has length 75 [2021-11-09 09:38:13,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:38:13,919 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 752 transitions. [2021-11-09 09:38:13,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:13,919 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 752 transitions. [2021-11-09 09:38:13,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 09:38:13,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:38:13,921 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:38:13,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-09 09:38:13,922 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:38:13,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:38:13,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1525393949, now seen corresponding path program 1 times [2021-11-09 09:38:13,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:38:13,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245536775] [2021-11-09 09:38:13,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:38:13,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:38:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:38:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:38:14,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:38:14,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245536775] [2021-11-09 09:38:14,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245536775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:38:14,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:38:14,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:38:14,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788214926] [2021-11-09 09:38:14,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:38:14,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:38:14,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:38:14,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:38:14,618 INFO L87 Difference]: Start difference. First operand 666 states and 752 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:38:22,198 INFO L93 Difference]: Finished difference Result 944 states and 1071 transitions. [2021-11-09 09:38:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:38:22,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-09 09:38:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:38:22,202 INFO L225 Difference]: With dead ends: 944 [2021-11-09 09:38:22,202 INFO L226 Difference]: Without dead ends: 933 [2021-11-09 09:38:22,202 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:38:22,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-11-09 09:38:22,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 905. [2021-11-09 09:38:22,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 896 states have (on average 1.1618303571428572) internal successors, (1041), 904 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:22,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1041 transitions. [2021-11-09 09:38:22,287 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1041 transitions. Word has length 77 [2021-11-09 09:38:22,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:38:22,288 INFO L470 AbstractCegarLoop]: Abstraction has 905 states and 1041 transitions. [2021-11-09 09:38:22,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1041 transitions. [2021-11-09 09:38:22,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 09:38:22,290 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:38:22,290 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:38:22,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-09 09:38:22,291 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:38:22,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:38:22,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1851304735, now seen corresponding path program 1 times [2021-11-09 09:38:22,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:38:22,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174167858] [2021-11-09 09:38:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:38:22,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:38:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:38:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:38:22,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:38:22,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174167858] [2021-11-09 09:38:22,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174167858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:38:22,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:38:22,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:38:22,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243350299] [2021-11-09 09:38:22,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:38:22,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:38:22,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:38:22,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:38:22,942 INFO L87 Difference]: Start difference. First operand 905 states and 1041 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:30,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:38:30,502 INFO L93 Difference]: Finished difference Result 1036 states and 1193 transitions. [2021-11-09 09:38:30,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:38:30,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-09 09:38:30,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:38:30,506 INFO L225 Difference]: With dead ends: 1036 [2021-11-09 09:38:30,506 INFO L226 Difference]: Without dead ends: 921 [2021-11-09 09:38:30,507 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:38:30,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2021-11-09 09:38:30,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 898. [2021-11-09 09:38:30,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 889 states have (on average 1.1799775028121484) internal successors, (1049), 897 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1049 transitions. [2021-11-09 09:38:30,599 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1049 transitions. Word has length 79 [2021-11-09 09:38:30,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:38:30,599 INFO L470 AbstractCegarLoop]: Abstraction has 898 states and 1049 transitions. [2021-11-09 09:38:30,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:30,599 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1049 transitions. [2021-11-09 09:38:30,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-09 09:38:30,601 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:38:30,601 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:38:30,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-09 09:38:30,602 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:38:30,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:38:30,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1264614431, now seen corresponding path program 1 times [2021-11-09 09:38:30,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:38:30,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250158771] [2021-11-09 09:38:30,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:38:30,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:38:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:38:31,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:38:31,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:38:31,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250158771] [2021-11-09 09:38:31,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250158771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:38:31,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:38:31,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:38:31,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938765056] [2021-11-09 09:38:31,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:38:31,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:38:31,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:38:31,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:38:31,633 INFO L87 Difference]: Start difference. First operand 898 states and 1049 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:42,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:38:42,050 INFO L93 Difference]: Finished difference Result 1528 states and 1780 transitions. [2021-11-09 09:38:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:38:42,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-09 09:38:42,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:38:42,056 INFO L225 Difference]: With dead ends: 1528 [2021-11-09 09:38:42,056 INFO L226 Difference]: Without dead ends: 1308 [2021-11-09 09:38:42,057 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-09 09:38:42,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2021-11-09 09:38:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1058. [2021-11-09 09:38:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 1049 states have (on average 1.1734985700667302) internal successors, (1231), 1057 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1231 transitions. [2021-11-09 09:38:42,147 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1231 transitions. Word has length 80 [2021-11-09 09:38:42,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:38:42,147 INFO L470 AbstractCegarLoop]: Abstraction has 1058 states and 1231 transitions. [2021-11-09 09:38:42,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:42,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1231 transitions. [2021-11-09 09:38:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-09 09:38:42,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:38:42,149 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:38:42,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-09 09:38:42,150 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:38:42,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:38:42,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1448030890, now seen corresponding path program 1 times [2021-11-09 09:38:42,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:38:42,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119386180] [2021-11-09 09:38:42,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:38:42,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:38:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:38:51,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:38:51,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:38:51,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119386180] [2021-11-09 09:38:51,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119386180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:38:51,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:38:51,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-09 09:38:51,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860066089] [2021-11-09 09:38:51,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-09 09:38:51,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:38:51,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-09 09:38:51,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2021-11-09 09:38:51,776 INFO L87 Difference]: Start difference. First operand 1058 states and 1231 transitions. Second operand has 21 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 21 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:39:24,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:24,098 INFO L93 Difference]: Finished difference Result 1509 states and 1738 transitions. [2021-11-09 09:39:24,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:39:24,113 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 21 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-09 09:39:24,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:24,120 INFO L225 Difference]: With dead ends: 1509 [2021-11-09 09:39:24,120 INFO L226 Difference]: Without dead ends: 1394 [2021-11-09 09:39:24,122 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=338, Invalid=994, Unknown=0, NotChecked=0, Total=1332 [2021-11-09 09:39:24,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-11-09 09:39:24,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1114. [2021-11-09 09:39:24,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1105 states have (on average 1.1683257918552037) internal successors, (1291), 1113 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:39:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1291 transitions. [2021-11-09 09:39:24,227 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1291 transitions. Word has length 80 [2021-11-09 09:39:24,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:24,228 INFO L470 AbstractCegarLoop]: Abstraction has 1114 states and 1291 transitions. [2021-11-09 09:39:24,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 21 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:39:24,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1291 transitions. [2021-11-09 09:39:24,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-09 09:39:24,230 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:24,230 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:24,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-09 09:39:24,230 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:39:24,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:24,231 INFO L85 PathProgramCache]: Analyzing trace with hash -84873110, now seen corresponding path program 1 times [2021-11-09 09:39:24,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:39:24,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319450457] [2021-11-09 09:39:24,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:24,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:39:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:25,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:39:25,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319450457] [2021-11-09 09:39:25,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319450457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:25,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:25,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 09:39:25,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193673579] [2021-11-09 09:39:25,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:39:25,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:39:25,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:39:25,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:39:25,440 INFO L87 Difference]: Start difference. First operand 1114 states and 1291 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:39:34,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:34,815 INFO L93 Difference]: Finished difference Result 1529 states and 1736 transitions. [2021-11-09 09:39:34,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:39:34,816 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-09 09:39:34,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:34,822 INFO L225 Difference]: With dead ends: 1529 [2021-11-09 09:39:34,822 INFO L226 Difference]: Without dead ends: 1463 [2021-11-09 09:39:34,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-11-09 09:39:34,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2021-11-09 09:39:34,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1114. [2021-11-09 09:39:34,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1105 states have (on average 1.1665158371040725) internal successors, (1289), 1113 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:39:34,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1289 transitions. [2021-11-09 09:39:34,913 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1289 transitions. Word has length 81 [2021-11-09 09:39:34,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:34,914 INFO L470 AbstractCegarLoop]: Abstraction has 1114 states and 1289 transitions. [2021-11-09 09:39:34,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:39:34,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1289 transitions. [2021-11-09 09:39:34,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-09 09:39:34,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:34,916 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:34,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-09 09:39:34,916 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:39:34,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:34,917 INFO L85 PathProgramCache]: Analyzing trace with hash -902521560, now seen corresponding path program 1 times [2021-11-09 09:39:34,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:39:34,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321372752] [2021-11-09 09:39:34,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:34,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:39:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:36,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:36,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:39:36,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321372752] [2021-11-09 09:39:36,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321372752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:36,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:36,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 09:39:36,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425275222] [2021-11-09 09:39:36,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:39:36,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:39:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:39:36,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:39:36,117 INFO L87 Difference]: Start difference. First operand 1114 states and 1289 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:39:47,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:47,482 INFO L93 Difference]: Finished difference Result 1728 states and 1970 transitions. [2021-11-09 09:39:47,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-09 09:39:47,483 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-09 09:39:47,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:47,490 INFO L225 Difference]: With dead ends: 1728 [2021-11-09 09:39:47,491 INFO L226 Difference]: Without dead ends: 1660 [2021-11-09 09:39:47,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=234, Invalid=696, Unknown=0, NotChecked=0, Total=930 [2021-11-09 09:39:47,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-11-09 09:39:47,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1145. [2021-11-09 09:39:47,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1136 states have (on average 1.1637323943661972) internal successors, (1322), 1144 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:39:47,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1322 transitions. [2021-11-09 09:39:47,575 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1322 transitions. Word has length 81 [2021-11-09 09:39:47,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:47,575 INFO L470 AbstractCegarLoop]: Abstraction has 1145 states and 1322 transitions. [2021-11-09 09:39:47,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:39:47,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1322 transitions. [2021-11-09 09:39:47,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-09 09:39:47,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:47,577 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:47,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-09 09:39:47,577 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:39:47,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:47,577 INFO L85 PathProgramCache]: Analyzing trace with hash -106540190, now seen corresponding path program 1 times [2021-11-09 09:39:47,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:39:47,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000625224] [2021-11-09 09:39:47,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:47,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:39:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:54,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:39:54,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000625224] [2021-11-09 09:39:54,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000625224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:54,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:54,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:39:54,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615373620] [2021-11-09 09:39:54,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:39:54,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:39:54,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:39:54,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:39:54,542 INFO L87 Difference]: Start difference. First operand 1145 states and 1322 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:40:21,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:40:21,813 INFO L93 Difference]: Finished difference Result 1403 states and 1613 transitions. [2021-11-09 09:40:21,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-09 09:40:21,814 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-09 09:40:21,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:40:21,820 INFO L225 Difference]: With dead ends: 1403 [2021-11-09 09:40:21,820 INFO L226 Difference]: Without dead ends: 1313 [2021-11-09 09:40:21,822 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2021-11-09 09:40:21,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2021-11-09 09:40:21,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1198. [2021-11-09 09:40:21,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 1189 states have (on average 1.1682085786375105) internal successors, (1389), 1197 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:40:21,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1389 transitions. [2021-11-09 09:40:21,943 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1389 transitions. Word has length 81 [2021-11-09 09:40:21,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:40:21,943 INFO L470 AbstractCegarLoop]: Abstraction has 1198 states and 1389 transitions. [2021-11-09 09:40:21,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:40:21,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1389 transitions. [2021-11-09 09:40:21,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-09 09:40:21,944 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:40:21,944 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:40:21,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-09 09:40:21,945 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:40:21,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:40:21,945 INFO L85 PathProgramCache]: Analyzing trace with hash 573518180, now seen corresponding path program 1 times [2021-11-09 09:40:21,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:40:21,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253613752] [2021-11-09 09:40:21,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:40:21,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:40:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:40:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:40:22,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:40:22,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253613752] [2021-11-09 09:40:22,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253613752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:40:22,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:40:22,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:40:22,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197056578] [2021-11-09 09:40:22,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:40:22,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:40:22,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:40:22,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:40:22,747 INFO L87 Difference]: Start difference. First operand 1198 states and 1389 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:40:25,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:40:25,528 INFO L93 Difference]: Finished difference Result 2355 states and 2731 transitions. [2021-11-09 09:40:25,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:40:25,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-09 09:40:25,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:40:25,531 INFO L225 Difference]: With dead ends: 2355 [2021-11-09 09:40:25,531 INFO L226 Difference]: Without dead ends: 1196 [2021-11-09 09:40:25,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:40:25,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-11-09 09:40:25,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1196. [2021-11-09 09:40:25,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 1187 states have (on average 1.1255265374894692) internal successors, (1336), 1195 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:40:25,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1336 transitions. [2021-11-09 09:40:25,635 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1336 transitions. Word has length 81 [2021-11-09 09:40:25,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:40:25,635 INFO L470 AbstractCegarLoop]: Abstraction has 1196 states and 1336 transitions. [2021-11-09 09:40:25,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:40:25,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1336 transitions. [2021-11-09 09:40:25,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-09 09:40:25,637 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:40:25,637 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:40:25,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-09 09:40:25,637 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:40:25,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:40:25,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1933735067, now seen corresponding path program 1 times [2021-11-09 09:40:25,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:40:25,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880702413] [2021-11-09 09:40:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:40:25,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:40:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:40:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:40:26,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:40:26,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880702413] [2021-11-09 09:40:26,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880702413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:40:26,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:40:26,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:40:26,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415798897] [2021-11-09 09:40:26,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:40:26,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:40:26,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:40:26,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:40:26,705 INFO L87 Difference]: Start difference. First operand 1196 states and 1336 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:40:33,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:40:33,083 INFO L93 Difference]: Finished difference Result 1765 states and 1951 transitions. [2021-11-09 09:40:33,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:40:33,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-09 09:40:33,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:40:33,087 INFO L225 Difference]: With dead ends: 1765 [2021-11-09 09:40:33,087 INFO L226 Difference]: Without dead ends: 1637 [2021-11-09 09:40:33,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-11-09 09:40:33,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-11-09 09:40:33,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1196. [2021-11-09 09:40:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 1187 states have (on average 1.1238416175231676) internal successors, (1334), 1195 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:40:33,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1334 transitions. [2021-11-09 09:40:33,180 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1334 transitions. Word has length 82 [2021-11-09 09:40:33,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:40:33,180 INFO L470 AbstractCegarLoop]: Abstraction has 1196 states and 1334 transitions. [2021-11-09 09:40:33,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:40:33,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1334 transitions. [2021-11-09 09:40:33,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-09 09:40:33,182 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:40:33,182 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:40:33,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-09 09:40:33,182 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:40:33,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:40:33,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1116086617, now seen corresponding path program 1 times [2021-11-09 09:40:33,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:40:33,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643718398] [2021-11-09 09:40:33,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:40:33,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:40:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:40:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:40:33,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:40:33,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643718398] [2021-11-09 09:40:33,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643718398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:40:33,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:40:33,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:40:33,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465831102] [2021-11-09 09:40:33,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:40:33,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:40:33,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:40:33,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:40:33,927 INFO L87 Difference]: Start difference. First operand 1196 states and 1334 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:40:36,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:40:36,935 INFO L93 Difference]: Finished difference Result 1708 states and 1909 transitions. [2021-11-09 09:40:36,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:40:36,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-09 09:40:36,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:40:36,938 INFO L225 Difference]: With dead ends: 1708 [2021-11-09 09:40:36,938 INFO L226 Difference]: Without dead ends: 1484 [2021-11-09 09:40:36,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:40:36,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-11-09 09:40:37,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1053. [2021-11-09 09:40:37,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1044 states have (on average 1.1226053639846743) internal successors, (1172), 1052 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:40:37,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1172 transitions. [2021-11-09 09:40:37,014 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1172 transitions. Word has length 82 [2021-11-09 09:40:37,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:40:37,015 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 1172 transitions. [2021-11-09 09:40:37,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:40:37,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1172 transitions. [2021-11-09 09:40:37,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-09 09:40:37,016 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:40:37,016 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:40:37,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-09 09:40:37,016 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:40:37,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:40:37,017 INFO L85 PathProgramCache]: Analyzing trace with hash 62704963, now seen corresponding path program 1 times [2021-11-09 09:40:37,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:40:37,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870317255] [2021-11-09 09:40:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:40:37,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:40:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:40:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:40:40,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:40:40,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870317255] [2021-11-09 09:40:40,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870317255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:40:40,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:40:40,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-09 09:40:40,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891100819] [2021-11-09 09:40:40,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 09:40:40,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:40:40,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 09:40:40,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:40:40,275 INFO L87 Difference]: Start difference. First operand 1053 states and 1172 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:40:56,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:40:56,573 INFO L93 Difference]: Finished difference Result 1262 states and 1378 transitions. [2021-11-09 09:40:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:40:56,574 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-09 09:40:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:40:56,575 INFO L225 Difference]: With dead ends: 1262 [2021-11-09 09:40:56,575 INFO L226 Difference]: Without dead ends: 991 [2021-11-09 09:40:56,576 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=175, Invalid=637, Unknown=0, NotChecked=0, Total=812 [2021-11-09 09:40:56,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2021-11-09 09:40:56,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 804. [2021-11-09 09:40:56,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 795 states have (on average 1.1157232704402515) internal successors, (887), 803 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:40:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 887 transitions. [2021-11-09 09:40:56,637 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 887 transitions. Word has length 82 [2021-11-09 09:40:56,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:40:56,638 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 887 transitions. [2021-11-09 09:40:56,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:40:56,638 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 887 transitions. [2021-11-09 09:40:56,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-09 09:40:56,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:40:56,639 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:40:56,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-09 09:40:56,639 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:40:56,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:40:56,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1001840699, now seen corresponding path program 1 times [2021-11-09 09:40:56,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:40:56,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430884002] [2021-11-09 09:40:56,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:40:56,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:40:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:40:57,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:40:57,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:40:57,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430884002] [2021-11-09 09:40:57,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430884002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:40:57,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:40:57,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:40:57,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578315393] [2021-11-09 09:40:57,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:40:57,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:40:57,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:40:57,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:40:57,254 INFO L87 Difference]: Start difference. First operand 804 states and 887 transitions. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:03,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:03,042 INFO L93 Difference]: Finished difference Result 1232 states and 1361 transitions. [2021-11-09 09:41:03,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 09:41:03,043 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-09 09:41:03,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:03,045 INFO L225 Difference]: With dead ends: 1232 [2021-11-09 09:41:03,045 INFO L226 Difference]: Without dead ends: 1217 [2021-11-09 09:41:03,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2021-11-09 09:41:03,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-11-09 09:41:03,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 832. [2021-11-09 09:41:03,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 823 states have (on average 1.109356014580802) internal successors, (913), 831 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:03,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 913 transitions. [2021-11-09 09:41:03,108 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 913 transitions. Word has length 83 [2021-11-09 09:41:03,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:03,109 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 913 transitions. [2021-11-09 09:41:03,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:03,109 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 913 transitions. [2021-11-09 09:41:03,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-09 09:41:03,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:03,110 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:41:03,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-09 09:41:03,110 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:41:03,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:03,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1516959556, now seen corresponding path program 1 times [2021-11-09 09:41:03,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:03,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499216547] [2021-11-09 09:41:03,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:03,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:09,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:09,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499216547] [2021-11-09 09:41:09,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499216547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:09,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:09,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-09 09:41:09,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048698911] [2021-11-09 09:41:09,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-09 09:41:09,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:09,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-09 09:41:09,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-11-09 09:41:09,121 INFO L87 Difference]: Start difference. First operand 832 states and 913 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:38,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:38,666 INFO L93 Difference]: Finished difference Result 1356 states and 1479 transitions. [2021-11-09 09:41:38,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-09 09:41:38,667 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-09 09:41:38,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:38,668 INFO L225 Difference]: With dead ends: 1356 [2021-11-09 09:41:38,668 INFO L226 Difference]: Without dead ends: 1110 [2021-11-09 09:41:38,670 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=405, Invalid=1575, Unknown=0, NotChecked=0, Total=1980 [2021-11-09 09:41:38,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-09 09:41:38,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 875. [2021-11-09 09:41:38,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 866 states have (on average 1.0981524249422632) internal successors, (951), 874 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:38,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 951 transitions. [2021-11-09 09:41:38,756 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 951 transitions. Word has length 85 [2021-11-09 09:41:38,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:38,756 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 951 transitions. [2021-11-09 09:41:38,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:38,757 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 951 transitions. [2021-11-09 09:41:38,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-09 09:41:38,758 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:38,758 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:41:38,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-09 09:41:38,758 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:41:38,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:38,758 INFO L85 PathProgramCache]: Analyzing trace with hash 434207952, now seen corresponding path program 1 times [2021-11-09 09:41:38,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:38,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948855022] [2021-11-09 09:41:38,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:38,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:41,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:41,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:41,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948855022] [2021-11-09 09:41:41,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948855022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:41,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:41,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 09:41:41,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152557886] [2021-11-09 09:41:41,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:41:41,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:41,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:41:41,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:41:41,447 INFO L87 Difference]: Start difference. First operand 875 states and 951 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:44,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:44,607 INFO L93 Difference]: Finished difference Result 1757 states and 1912 transitions. [2021-11-09 09:41:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:41:44,608 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-09 09:41:44,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:44,609 INFO L225 Difference]: With dead ends: 1757 [2021-11-09 09:41:44,609 INFO L226 Difference]: Without dead ends: 988 [2021-11-09 09:41:44,610 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:41:44,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-11-09 09:41:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 879. [2021-11-09 09:41:44,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 870 states have (on average 1.096551724137931) internal successors, (954), 878 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 954 transitions. [2021-11-09 09:41:44,689 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 954 transitions. Word has length 86 [2021-11-09 09:41:44,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:44,690 INFO L470 AbstractCegarLoop]: Abstraction has 879 states and 954 transitions. [2021-11-09 09:41:44,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:44,690 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 954 transitions. [2021-11-09 09:41:44,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-09 09:41:44,691 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:44,692 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:41:44,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-09 09:41:44,692 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:41:44,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:44,692 INFO L85 PathProgramCache]: Analyzing trace with hash -2071448370, now seen corresponding path program 1 times [2021-11-09 09:41:44,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:44,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300707129] [2021-11-09 09:41:44,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:44,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:46,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:46,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300707129] [2021-11-09 09:41:46,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300707129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:46,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:46,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-09 09:41:46,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903449581] [2021-11-09 09:41:46,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:41:46,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:46,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:41:46,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:41:46,618 INFO L87 Difference]: Start difference. First operand 879 states and 954 transitions. Second operand has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:00,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:42:00,725 INFO L93 Difference]: Finished difference Result 1456 states and 1567 transitions. [2021-11-09 09:42:00,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 09:42:00,725 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-09 09:42:00,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:42:00,727 INFO L225 Difference]: With dead ends: 1456 [2021-11-09 09:42:00,727 INFO L226 Difference]: Without dead ends: 1400 [2021-11-09 09:42:00,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=291, Invalid=969, Unknown=0, NotChecked=0, Total=1260 [2021-11-09 09:42:00,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-11-09 09:42:00,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 858. [2021-11-09 09:42:00,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 849 states have (on average 1.0954063604240283) internal successors, (930), 857 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 930 transitions. [2021-11-09 09:42:00,821 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 930 transitions. Word has length 87 [2021-11-09 09:42:00,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:42:00,821 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 930 transitions. [2021-11-09 09:42:00,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:00,822 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 930 transitions. [2021-11-09 09:42:00,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-09 09:42:00,823 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:42:00,824 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:42:00,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-09 09:42:00,824 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:42:00,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:42:00,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1912145800, now seen corresponding path program 1 times [2021-11-09 09:42:00,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:42:00,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636815897] [2021-11-09 09:42:00,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:42:00,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:42:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:42:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:42:02,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:42:02,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636815897] [2021-11-09 09:42:02,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636815897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:42:02,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:42:02,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:42:02,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215547073] [2021-11-09 09:42:02,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:42:02,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:42:02,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:42:02,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:42:02,166 INFO L87 Difference]: Start difference. First operand 858 states and 930 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:09,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:42:09,685 INFO L93 Difference]: Finished difference Result 1175 states and 1280 transitions. [2021-11-09 09:42:09,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:42:09,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-09 09:42:09,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:42:09,688 INFO L225 Difference]: With dead ends: 1175 [2021-11-09 09:42:09,689 INFO L226 Difference]: Without dead ends: 957 [2021-11-09 09:42:09,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:42:09,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-11-09 09:42:09,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 858. [2021-11-09 09:42:09,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 849 states have (on average 1.0906949352179034) internal successors, (926), 857 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 926 transitions. [2021-11-09 09:42:09,768 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 926 transitions. Word has length 88 [2021-11-09 09:42:09,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:42:09,768 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 926 transitions. [2021-11-09 09:42:09,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:09,769 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 926 transitions. [2021-11-09 09:42:09,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-09 09:42:09,770 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:42:09,770 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:42:09,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-09 09:42:09,770 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:42:09,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:42:09,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1810270269, now seen corresponding path program 1 times [2021-11-09 09:42:09,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:42:09,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655605613] [2021-11-09 09:42:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:42:09,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:42:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:42:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:42:13,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:42:13,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655605613] [2021-11-09 09:42:13,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655605613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:42:13,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:42:13,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-09 09:42:13,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403155954] [2021-11-09 09:42:13,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:42:13,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:42:13,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:42:13,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:42:13,369 INFO L87 Difference]: Start difference. First operand 858 states and 926 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:17,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:42:17,112 INFO L93 Difference]: Finished difference Result 1182 states and 1262 transitions. [2021-11-09 09:42:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 09:42:17,113 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-09 09:42:17,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:42:17,115 INFO L225 Difference]: With dead ends: 1182 [2021-11-09 09:42:17,115 INFO L226 Difference]: Without dead ends: 1088 [2021-11-09 09:42:17,116 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=345, Invalid=777, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 09:42:17,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2021-11-09 09:42:17,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 768. [2021-11-09 09:42:17,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 759 states have (on average 1.0948616600790513) internal successors, (831), 767 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:17,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 831 transitions. [2021-11-09 09:42:17,185 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 831 transitions. Word has length 89 [2021-11-09 09:42:17,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:42:17,185 INFO L470 AbstractCegarLoop]: Abstraction has 768 states and 831 transitions. [2021-11-09 09:42:17,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:17,185 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 831 transitions. [2021-11-09 09:42:17,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 09:42:17,187 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:42:17,187 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:42:17,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-09 09:42:17,188 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:42:17,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:42:17,188 INFO L85 PathProgramCache]: Analyzing trace with hash -573045769, now seen corresponding path program 1 times [2021-11-09 09:42:17,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:42:17,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065173837] [2021-11-09 09:42:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:42:17,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:42:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:42:19,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:42:19,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:42:19,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065173837] [2021-11-09 09:42:19,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065173837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:42:19,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:42:19,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-09 09:42:19,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218673223] [2021-11-09 09:42:19,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 09:42:19,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:42:19,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 09:42:19,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-11-09 09:42:19,775 INFO L87 Difference]: Start difference. First operand 768 states and 831 transitions. Second operand has 20 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:36,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:42:36,976 INFO L93 Difference]: Finished difference Result 1244 states and 1339 transitions. [2021-11-09 09:42:36,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-09 09:42:36,976 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-09 09:42:36,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:42:36,978 INFO L225 Difference]: With dead ends: 1244 [2021-11-09 09:42:36,978 INFO L226 Difference]: Without dead ends: 1062 [2021-11-09 09:42:36,979 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2021-11-09 09:42:36,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2021-11-09 09:42:37,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 776. [2021-11-09 09:42:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 767 states have (on average 1.0938722294654497) internal successors, (839), 775 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:37,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 839 transitions. [2021-11-09 09:42:37,049 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 839 transitions. Word has length 91 [2021-11-09 09:42:37,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:42:37,049 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 839 transitions. [2021-11-09 09:42:37,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:37,050 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 839 transitions. [2021-11-09 09:42:37,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-09 09:42:37,050 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:42:37,050 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:42:37,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-09 09:42:37,051 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:42:37,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:42:37,051 INFO L85 PathProgramCache]: Analyzing trace with hash 565360802, now seen corresponding path program 1 times [2021-11-09 09:42:37,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:42:37,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583565413] [2021-11-09 09:42:37,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:42:37,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:42:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:42:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:42:42,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:42:42,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583565413] [2021-11-09 09:42:42,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583565413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:42:42,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:42:42,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 09:42:42,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953306603] [2021-11-09 09:42:42,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:42:42,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:42:42,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:42:42,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:42:42,693 INFO L87 Difference]: Start difference. First operand 776 states and 839 transitions. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:49,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:42:49,150 INFO L93 Difference]: Finished difference Result 1026 states and 1115 transitions. [2021-11-09 09:42:49,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:42:49,150 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-09 09:42:49,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:42:49,151 INFO L225 Difference]: With dead ends: 1026 [2021-11-09 09:42:49,152 INFO L226 Difference]: Without dead ends: 820 [2021-11-09 09:42:49,153 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:42:49,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-11-09 09:42:49,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 734. [2021-11-09 09:42:49,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 726 states have (on average 1.0771349862258952) internal successors, (782), 733 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:49,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 782 transitions. [2021-11-09 09:42:49,220 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 782 transitions. Word has length 92 [2021-11-09 09:42:49,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:42:49,220 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 782 transitions. [2021-11-09 09:42:49,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:49,221 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 782 transitions. [2021-11-09 09:42:49,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-09 09:42:49,222 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:42:49,223 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:42:49,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-09 09:42:49,223 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:42:49,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:42:49,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1768352266, now seen corresponding path program 1 times [2021-11-09 09:42:49,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:42:49,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109516110] [2021-11-09 09:42:49,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:42:49,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:42:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:42:50,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:42:50,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:42:50,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109516110] [2021-11-09 09:42:50,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109516110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:42:50,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:42:50,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-09 09:42:50,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118559987] [2021-11-09 09:42:50,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:42:50,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:42:50,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:42:50,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:42:50,997 INFO L87 Difference]: Start difference. First operand 734 states and 782 transitions. Second operand has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:43:08,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:43:08,012 INFO L93 Difference]: Finished difference Result 1378 states and 1464 transitions. [2021-11-09 09:43:08,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:43:08,013 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-09 09:43:08,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:43:08,014 INFO L225 Difference]: With dead ends: 1378 [2021-11-09 09:43:08,014 INFO L226 Difference]: Without dead ends: 1080 [2021-11-09 09:43:08,015 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-11-09 09:43:08,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2021-11-09 09:43:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 779. [2021-11-09 09:43:08,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 771 states have (on average 1.0752269779507133) internal successors, (829), 778 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:43:08,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 829 transitions. [2021-11-09 09:43:08,086 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 829 transitions. Word has length 99 [2021-11-09 09:43:08,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:43:08,086 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 829 transitions. [2021-11-09 09:43:08,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:43:08,087 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 829 transitions. [2021-11-09 09:43:08,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 09:43:08,088 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:08,088 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:43:08,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-09 09:43:08,088 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:43:08,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:08,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2078508213, now seen corresponding path program 1 times [2021-11-09 09:43:08,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:08,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315751591] [2021-11-09 09:43:08,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:08,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:43:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:43:12,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:43:12,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315751591] [2021-11-09 09:43:12,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315751591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:43:12,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:43:12,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 09:43:12,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374960507] [2021-11-09 09:43:12,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:43:12,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:12,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:43:12,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:43:12,442 INFO L87 Difference]: Start difference. First operand 779 states and 829 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:43:17,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:43:17,722 INFO L93 Difference]: Finished difference Result 910 states and 967 transitions. [2021-11-09 09:43:17,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:43:17,723 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-09 09:43:17,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:43:17,724 INFO L225 Difference]: With dead ends: 910 [2021-11-09 09:43:17,724 INFO L226 Difference]: Without dead ends: 908 [2021-11-09 09:43:17,724 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:43:17,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-11-09 09:43:17,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 777. [2021-11-09 09:43:17,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 770 states have (on average 1.0714285714285714) internal successors, (825), 776 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:43:17,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 825 transitions. [2021-11-09 09:43:17,785 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 825 transitions. Word has length 100 [2021-11-09 09:43:17,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:43:17,786 INFO L470 AbstractCegarLoop]: Abstraction has 777 states and 825 transitions. [2021-11-09 09:43:17,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:43:17,786 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 825 transitions. [2021-11-09 09:43:17,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 09:43:17,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:17,787 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:43:17,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-09 09:43:17,787 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:43:17,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:17,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1992595281, now seen corresponding path program 1 times [2021-11-09 09:43:17,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:17,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404623997] [2021-11-09 09:43:17,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:17,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:43:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:43:23,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:43:23,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404623997] [2021-11-09 09:43:23,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404623997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:43:23,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:43:23,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:43:23,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185754290] [2021-11-09 09:43:23,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:43:23,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:23,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:43:23,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:43:23,229 INFO L87 Difference]: Start difference. First operand 777 states and 825 transitions. Second operand has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:43:35,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:43:35,029 INFO L93 Difference]: Finished difference Result 1101 states and 1165 transitions. [2021-11-09 09:43:35,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-09 09:43:35,030 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-09 09:43:35,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:43:35,031 INFO L225 Difference]: With dead ends: 1101 [2021-11-09 09:43:35,032 INFO L226 Difference]: Without dead ends: 988 [2021-11-09 09:43:35,033 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-11-09 09:43:35,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-11-09 09:43:35,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 648. [2021-11-09 09:43:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 643 states have (on average 1.0637636080870918) internal successors, (684), 647 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:43:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 684 transitions. [2021-11-09 09:43:35,130 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 684 transitions. Word has length 100 [2021-11-09 09:43:35,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:43:35,131 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 684 transitions. [2021-11-09 09:43:35,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:43:35,131 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 684 transitions. [2021-11-09 09:43:35,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:43:35,133 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:35,133 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:43:35,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-09 09:43:35,133 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:43:35,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:35,134 INFO L85 PathProgramCache]: Analyzing trace with hash 298918310, now seen corresponding path program 1 times [2021-11-09 09:43:35,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:35,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282709572] [2021-11-09 09:43:35,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:35,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:43:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:43:37,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:43:37,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282709572] [2021-11-09 09:43:37,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282709572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:43:37,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:43:37,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-09 09:43:37,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19819824] [2021-11-09 09:43:37,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-09 09:43:37,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:37,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-09 09:43:37,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-11-09 09:43:37,871 INFO L87 Difference]: Start difference. First operand 648 states and 684 transitions. Second operand has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:43:54,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:43:54,316 INFO L93 Difference]: Finished difference Result 763 states and 805 transitions. [2021-11-09 09:43:54,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:43:54,317 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-09 09:43:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:43:54,319 INFO L225 Difference]: With dead ends: 763 [2021-11-09 09:43:54,319 INFO L226 Difference]: Without dead ends: 761 [2021-11-09 09:43:54,320 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2021-11-09 09:43:54,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-11-09 09:43:54,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 682. [2021-11-09 09:43:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 677 states have (on average 1.0635155096011817) internal successors, (720), 681 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:43:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 720 transitions. [2021-11-09 09:43:54,414 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 720 transitions. Word has length 103 [2021-11-09 09:43:54,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:43:54,415 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 720 transitions. [2021-11-09 09:43:54,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:43:54,415 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 720 transitions. [2021-11-09 09:43:54,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:43:54,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:54,417 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:43:54,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-09 09:43:54,417 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:43:54,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:54,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1930039866, now seen corresponding path program 1 times [2021-11-09 09:43:54,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:54,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767819775] [2021-11-09 09:43:54,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:54,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:43:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:43:55,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:43:55,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767819775] [2021-11-09 09:43:55,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767819775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:43:55,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:43:55,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:43:55,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992095483] [2021-11-09 09:43:55,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:43:55,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:55,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:43:55,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:43:55,402 INFO L87 Difference]: Start difference. First operand 682 states and 720 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:00,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:44:00,650 INFO L93 Difference]: Finished difference Result 752 states and 795 transitions. [2021-11-09 09:44:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:44:00,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-09 09:44:00,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:44:00,652 INFO L225 Difference]: With dead ends: 752 [2021-11-09 09:44:00,652 INFO L226 Difference]: Without dead ends: 729 [2021-11-09 09:44:00,653 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:44:00,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-11-09 09:44:00,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 721. [2021-11-09 09:44:00,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 716 states have (on average 1.0642458100558658) internal successors, (762), 720 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 762 transitions. [2021-11-09 09:44:00,765 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 762 transitions. Word has length 103 [2021-11-09 09:44:00,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:44:00,765 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 762 transitions. [2021-11-09 09:44:00,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:00,766 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 762 transitions. [2021-11-09 09:44:00,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:44:00,767 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:44:00,767 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:00,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-09 09:44:00,768 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:44:00,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2101071149, now seen corresponding path program 1 times [2021-11-09 09:44:00,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:00,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651078643] [2021-11-09 09:44:00,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:00,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:44:02,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:02,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651078643] [2021-11-09 09:44:02,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651078643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:44:02,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:44:02,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-09 09:44:02,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233823500] [2021-11-09 09:44:02,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 09:44:02,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:02,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 09:44:02,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:44:02,471 INFO L87 Difference]: Start difference. First operand 721 states and 762 transitions. Second operand has 14 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:44:24,379 INFO L93 Difference]: Finished difference Result 875 states and 919 transitions. [2021-11-09 09:44:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 09:44:24,380 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-09 09:44:24,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:44:24,381 INFO L225 Difference]: With dead ends: 875 [2021-11-09 09:44:24,381 INFO L226 Difference]: Without dead ends: 713 [2021-11-09 09:44:24,382 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2021-11-09 09:44:24,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-09 09:44:24,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 639. [2021-11-09 09:44:24,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 634 states have (on average 1.0646687697160884) internal successors, (675), 638 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:24,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 675 transitions. [2021-11-09 09:44:24,446 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 675 transitions. Word has length 103 [2021-11-09 09:44:24,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:44:24,447 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 675 transitions. [2021-11-09 09:44:24,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:24,447 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 675 transitions. [2021-11-09 09:44:24,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-09 09:44:24,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:44:24,448 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:24,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-09 09:44:24,448 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:44:24,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash -877967230, now seen corresponding path program 1 times [2021-11-09 09:44:24,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:24,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772121596] [2021-11-09 09:44:24,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:24,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:44:47,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:47,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772121596] [2021-11-09 09:44:47,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772121596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:44:47,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:44:47,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-09 09:44:47,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126309199] [2021-11-09 09:44:47,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-09 09:44:47,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:47,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-09 09:44:47,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2021-11-09 09:44:47,584 INFO L87 Difference]: Start difference. First operand 639 states and 675 transitions. Second operand has 30 states, 30 states have (on average 3.6) internal successors, (108), 30 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:45:17,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:45:17,069 INFO L93 Difference]: Finished difference Result 800 states and 846 transitions. [2021-11-09 09:45:17,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 09:45:17,069 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.6) internal successors, (108), 30 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-09 09:45:17,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:45:17,071 INFO L225 Difference]: With dead ends: 800 [2021-11-09 09:45:17,071 INFO L226 Difference]: Without dead ends: 798 [2021-11-09 09:45:17,071 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=675, Invalid=2187, Unknown=0, NotChecked=0, Total=2862 [2021-11-09 09:45:17,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-11-09 09:45:17,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 644. [2021-11-09 09:45:17,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 639 states have (on average 1.0657276995305165) internal successors, (681), 643 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:45:17,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 681 transitions. [2021-11-09 09:45:17,136 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 681 transitions. Word has length 108 [2021-11-09 09:45:17,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:45:17,136 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 681 transitions. [2021-11-09 09:45:17,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.6) internal successors, (108), 30 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:45:17,136 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 681 transitions. [2021-11-09 09:45:17,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-09 09:45:17,137 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:45:17,137 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:45:17,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-09 09:45:17,138 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:45:17,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:45:17,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1433201177, now seen corresponding path program 1 times [2021-11-09 09:45:17,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:45:17,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769340911] [2021-11-09 09:45:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:45:17,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:45:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:45:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:45:18,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:45:18,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769340911] [2021-11-09 09:45:18,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769340911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:45:18,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:45:18,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-09 09:45:18,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48575837] [2021-11-09 09:45:18,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:45:18,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:45:18,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:45:18,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:45:18,982 INFO L87 Difference]: Start difference. First operand 644 states and 681 transitions. Second operand has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 13 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:45:37,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:45:37,291 INFO L93 Difference]: Finished difference Result 909 states and 951 transitions. [2021-11-09 09:45:37,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:45:37,292 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 13 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-09 09:45:37,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:45:37,295 INFO L225 Difference]: With dead ends: 909 [2021-11-09 09:45:37,295 INFO L226 Difference]: Without dead ends: 854 [2021-11-09 09:45:37,296 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=266, Invalid=856, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 09:45:37,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-11-09 09:45:37,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 631. [2021-11-09 09:45:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 626 states have (on average 1.0670926517571886) internal successors, (668), 630 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:45:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 668 transitions. [2021-11-09 09:45:37,432 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 668 transitions. Word has length 111 [2021-11-09 09:45:37,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:45:37,432 INFO L470 AbstractCegarLoop]: Abstraction has 631 states and 668 transitions. [2021-11-09 09:45:37,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 13 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:45:37,433 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 668 transitions. [2021-11-09 09:45:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-09 09:45:37,434 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:45:37,435 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:45:37,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-09 09:45:37,435 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:45:37,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:45:37,436 INFO L85 PathProgramCache]: Analyzing trace with hash 51100407, now seen corresponding path program 1 times [2021-11-09 09:45:37,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:45:37,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068842373] [2021-11-09 09:45:37,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:45:37,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:45:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:45:42,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:45:42,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:45:42,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068842373] [2021-11-09 09:45:42,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068842373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:45:42,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:45:42,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 09:45:42,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096227968] [2021-11-09 09:45:42,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:45:42,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:45:42,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:45:42,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:45:42,979 INFO L87 Difference]: Start difference. First operand 631 states and 668 transitions. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:45:54,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:45:54,256 INFO L93 Difference]: Finished difference Result 706 states and 745 transitions. [2021-11-09 09:45:54,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:45:54,257 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-09 09:45:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:45:54,258 INFO L225 Difference]: With dead ends: 706 [2021-11-09 09:45:54,258 INFO L226 Difference]: Without dead ends: 669 [2021-11-09 09:45:54,258 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2021-11-09 09:45:54,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-11-09 09:45:54,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 647. [2021-11-09 09:45:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 642 states have (on average 1.060747663551402) internal successors, (681), 646 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:45:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 681 transitions. [2021-11-09 09:45:54,349 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 681 transitions. Word has length 115 [2021-11-09 09:45:54,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:45:54,349 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 681 transitions. [2021-11-09 09:45:54,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:45:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 681 transitions. [2021-11-09 09:45:54,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-09 09:45:54,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:45:54,351 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:45:54,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-09 09:45:54,351 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-09 09:45:54,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:45:54,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1171615208, now seen corresponding path program 1 times [2021-11-09 09:45:54,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:45:54,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500535889] [2021-11-09 09:45:54,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:45:54,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms