./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_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_abae0b2e-ded9-4167-9e13-f17ec87c9984/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abae0b2e-ded9-4167-9e13-f17ec87c9984/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_abae0b2e-ded9-4167-9e13-f17ec87c9984/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abae0b2e-ded9-4167-9e13-f17ec87c9984/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abae0b2e-ded9-4167-9e13-f17ec87c9984/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_abae0b2e-ded9-4167-9e13-f17ec87c9984/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 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:45:12,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:45:12,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:45:12,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:45:12,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:45:12,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:45:12,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:45:12,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:45:12,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:45:12,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:45:12,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:45:12,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:45:12,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:45:12,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:45:12,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:45:12,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:45:12,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:45:12,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:45:12,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:45:12,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:45:12,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:45:12,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:45:12,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:45:12,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:45:12,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:45:12,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:45:12,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:45:12,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:45:12,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:45:12,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:45:12,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:45:12,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:45:12,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:45:12,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:45:12,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:45:12,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:45:12,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:45:12,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:45:12,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:45:12,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:45:12,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:45:12,525 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abae0b2e-ded9-4167-9e13-f17ec87c9984/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-09 08:45:12,559 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:45:12,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:45:12,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:45:12,560 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:45:12,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:45:12,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:45:12,562 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:45:12,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:45:12,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:45:12,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:45:12,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:45:12,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:45:12,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:45:12,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:45:12,564 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:45:12,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:45:12,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:45:12,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:45:12,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:45:12,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:45:12,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:45:12,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:45:12,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:45:12,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:45:12,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:45:12,566 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:45:12,567 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:45:12,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:45:12,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:45:12,567 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_abae0b2e-ded9-4167-9e13-f17ec87c9984/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abae0b2e-ded9-4167-9e13-f17ec87c9984/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c [2021-11-09 08:45:12,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:45:12,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:45:12,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:45:12,829 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:45:12,830 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:45:12,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abae0b2e-ded9-4167-9e13-f17ec87c9984/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2021-11-09 08:45:12,892 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abae0b2e-ded9-4167-9e13-f17ec87c9984/bin/uautomizer-IVEQpCNsaX/data/ae3dca823/1355b760bdf44367aa938e5e30430782/FLAGc7d2c5567 [2021-11-09 08:45:13,730 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:45:13,731 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abae0b2e-ded9-4167-9e13-f17ec87c9984/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2021-11-09 08:45:13,786 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abae0b2e-ded9-4167-9e13-f17ec87c9984/bin/uautomizer-IVEQpCNsaX/data/ae3dca823/1355b760bdf44367aa938e5e30430782/FLAGc7d2c5567 [2021-11-09 08:45:14,244 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abae0b2e-ded9-4167-9e13-f17ec87c9984/bin/uautomizer-IVEQpCNsaX/data/ae3dca823/1355b760bdf44367aa938e5e30430782 [2021-11-09 08:45:14,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:45:14,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:45:14,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:45:14,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:45:14,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:45:14,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:45:14" (1/1) ... [2021-11-09 08:45:14,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f837f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:45:14, skipping insertion in model container [2021-11-09 08:45:14,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:45:14" (1/1) ... [2021-11-09 08:45:14,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:45:14,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:45:14,632 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_abae0b2e-ded9-4167-9e13-f17ec87c9984/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4510,4523] [2021-11-09 08:45:14,640 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_abae0b2e-ded9-4167-9e13-f17ec87c9984/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4570,4583] [2021-11-09 08:45:14,666 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-09 08:45:14,672 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-09 08:45:15,800 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:15,815 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:15,815 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:15,816 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:15,817 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:15,837 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:15,840 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:15,849 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:15,851 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:16,375 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-09 08:45:16,377 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-09 08:45:16,378 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-09 08:45:16,379 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-09 08:45:16,381 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-09 08:45:16,382 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-09 08:45:16,382 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-09 08:45:16,390 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-09 08:45:16,391 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-09 08:45:16,392 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-09 08:45:16,662 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-09 08:45:16,843 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:16,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:16,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:45:16,984 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:45:17,000 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_abae0b2e-ded9-4167-9e13-f17ec87c9984/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4510,4523] [2021-11-09 08:45:17,000 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_abae0b2e-ded9-4167-9e13-f17ec87c9984/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4570,4583] [2021-11-09 08:45:17,002 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-09 08:45:17,003 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-09 08:45:17,077 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:17,077 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:17,078 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:17,078 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:17,079 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:17,085 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:17,086 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:17,087 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:17,088 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:17,120 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-09 08:45:17,121 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-09 08:45:17,122 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-09 08:45:17,122 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-09 08:45:17,124 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-09 08:45:17,124 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-09 08:45:17,125 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-09 08:45:17,125 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-09 08:45:17,126 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-09 08:45:17,126 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-09 08:45:17,148 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-09 08:45:17,204 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:17,205 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:45:17,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:45:17,542 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:45:17,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:45:17 WrapperNode [2021-11-09 08:45:17,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:45:17,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:45:17,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:45:17,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:45:17,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:45:17" (1/1) ... [2021-11-09 08:45:17,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:45:17" (1/1) ... [2021-11-09 08:45:17,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:45:17,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:45:17,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:45:17,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:45:17,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:45:17" (1/1) ... [2021-11-09 08:45:17,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:45:17" (1/1) ... [2021-11-09 08:45:17,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:45:17" (1/1) ... [2021-11-09 08:45:17,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:45:17" (1/1) ... [2021-11-09 08:45:18,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:45:17" (1/1) ... [2021-11-09 08:45:18,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:45:17" (1/1) ... [2021-11-09 08:45:18,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:45:17" (1/1) ... [2021-11-09 08:45:18,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:45:18,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:45:18,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:45:18,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:45:18,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:45:17" (1/1) ... [2021-11-09 08:45:18,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:45:18,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abae0b2e-ded9-4167-9e13-f17ec87c9984/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:45:18,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abae0b2e-ded9-4167-9e13-f17ec87c9984/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:45:18,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abae0b2e-ded9-4167-9e13-f17ec87c9984/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:45:18,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 08:45:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 08:45:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 08:45:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 08:45:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:45:18,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:45:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:45:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 08:45:18,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 08:45:18,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 08:45:18,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:45:30,684 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:45:30,685 INFO L299 CfgBuilder]: Removed 143 assume(true) statements. [2021-11-09 08:45:30,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:45:30 BoogieIcfgContainer [2021-11-09 08:45:30,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:45:30,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:45:30,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:45:30,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:45:30,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:45:14" (1/3) ... [2021-11-09 08:45:30,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278b6596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:45:30, skipping insertion in model container [2021-11-09 08:45:30,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:45:17" (2/3) ... [2021-11-09 08:45:30,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278b6596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:45:30, skipping insertion in model container [2021-11-09 08:45:30,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:45:30" (3/3) ... [2021-11-09 08:45:30,706 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness.i [2021-11-09 08:45:30,713 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:45:30,713 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-09 08:45:30,806 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:45:30,821 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 08:45:30,822 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-09 08:45:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 293 states, 273 states have (on average 1.4945054945054945) internal successors, (408), 292 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 08:45:30,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-09 08:45:30,865 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:30,866 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 08:45:30,866 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:45:30,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:30,873 INFO L85 PathProgramCache]: Analyzing trace with hash -389295303, now seen corresponding path program 1 times [2021-11-09 08:45:30,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:30,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027815214] [2021-11-09 08:45:30,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:30,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:31,821 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 08:45:31,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:31,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027815214] [2021-11-09 08:45:31,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027815214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:31,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:31,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:45:31,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527030850] [2021-11-09 08:45:31,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:45:31,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:31,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:45:31,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:45:31,854 INFO L87 Difference]: Start difference. First operand has 293 states, 273 states have (on average 1.4945054945054945) internal successors, (408), 292 states have internal predecessors, (408), 0 states have call successors, (0), 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 30.0) internal successors, (60), 2 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 08:45:31,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:31,918 INFO L93 Difference]: Finished difference Result 582 states and 811 transitions. [2021-11-09 08:45:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:45:31,920 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 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 08:45:31,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:31,936 INFO L225 Difference]: With dead ends: 582 [2021-11-09 08:45:31,936 INFO L226 Difference]: Without dead ends: 286 [2021-11-09 08:45:31,941 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 08:45:31,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-09 08:45:32,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2021-11-09 08:45:32,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 267 states have (on average 1.3558052434456929) internal successors, (362), 285 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 08:45:32,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 362 transitions. [2021-11-09 08:45:32,041 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 362 transitions. Word has length 60 [2021-11-09 08:45:32,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:32,042 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 362 transitions. [2021-11-09 08:45:32,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 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 08:45:32,043 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 362 transitions. [2021-11-09 08:45:32,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-09 08:45:32,049 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:32,052 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 08:45:32,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:45:32,053 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:45:32,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:32,056 INFO L85 PathProgramCache]: Analyzing trace with hash 20483131, now seen corresponding path program 1 times [2021-11-09 08:45:32,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:32,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029000007] [2021-11-09 08:45:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:32,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:32,605 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 08:45:32,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:32,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029000007] [2021-11-09 08:45:32,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029000007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:32,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:32,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:45:32,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627141912] [2021-11-09 08:45:32,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:45:32,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:32,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:45:32,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:45:32,610 INFO L87 Difference]: Start difference. First operand 286 states and 362 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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 08:45:32,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:32,922 INFO L93 Difference]: Finished difference Result 546 states and 690 transitions. [2021-11-09 08:45:32,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:45:32,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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 08:45:32,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:32,928 INFO L225 Difference]: With dead ends: 546 [2021-11-09 08:45:32,932 INFO L226 Difference]: Without dead ends: 286 [2021-11-09 08:45:32,934 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 08:45:32,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-09 08:45:32,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2021-11-09 08:45:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 267 states have (on average 1.344569288389513) internal successors, (359), 285 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 08:45:32,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 359 transitions. [2021-11-09 08:45:32,961 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 359 transitions. Word has length 60 [2021-11-09 08:45:32,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:32,961 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 359 transitions. [2021-11-09 08:45:32,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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 08:45:32,962 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 359 transitions. [2021-11-09 08:45:32,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 08:45:32,972 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:32,973 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 08:45:32,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:45:32,973 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:45:32,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:32,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1562718067, now seen corresponding path program 1 times [2021-11-09 08:45:32,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:32,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639855095] [2021-11-09 08:45:32,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:32,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:33,436 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 08:45:33,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:33,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639855095] [2021-11-09 08:45:33,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639855095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:33,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:33,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:45:33,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553192237] [2021-11-09 08:45:33,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:45:33,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:33,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:45:33,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:45:33,439 INFO L87 Difference]: Start difference. First operand 286 states and 359 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 08:45:34,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:34,110 INFO L93 Difference]: Finished difference Result 637 states and 812 transitions. [2021-11-09 08:45:34,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:45:34,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 08:45:34,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:34,114 INFO L225 Difference]: With dead ends: 637 [2021-11-09 08:45:34,114 INFO L226 Difference]: Without dead ends: 376 [2021-11-09 08:45:34,115 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:45:34,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-09 08:45:34,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 304. [2021-11-09 08:45:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 285 states have (on average 1.3228070175438595) internal successors, (377), 303 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 08:45:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 377 transitions. [2021-11-09 08:45:34,140 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 377 transitions. Word has length 72 [2021-11-09 08:45:34,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:34,141 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 377 transitions. [2021-11-09 08:45:34,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 08:45:34,142 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 377 transitions. [2021-11-09 08:45:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 08:45:34,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:34,147 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 08:45:34,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:45:34,149 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:45:34,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:34,151 INFO L85 PathProgramCache]: Analyzing trace with hash 301800817, now seen corresponding path program 1 times [2021-11-09 08:45:34,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:34,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14555563] [2021-11-09 08:45:34,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:34,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:34,649 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 08:45:34,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:34,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14555563] [2021-11-09 08:45:34,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14555563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:34,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:34,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:45:34,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416267879] [2021-11-09 08:45:34,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:45:34,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:34,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:45:34,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:45:34,653 INFO L87 Difference]: Start difference. First operand 304 states and 377 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 08:45:34,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:34,936 INFO L93 Difference]: Finished difference Result 550 states and 681 transitions. [2021-11-09 08:45:34,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:45:34,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 08:45:34,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:34,939 INFO L225 Difference]: With dead ends: 550 [2021-11-09 08:45:34,940 INFO L226 Difference]: Without dead ends: 304 [2021-11-09 08:45:34,940 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:45:34,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-09 08:45:34,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-09 08:45:34,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 285 states have (on average 1.3157894736842106) internal successors, (375), 303 states have internal predecessors, (375), 0 states have call successors, (0), 0 states 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 08:45:34,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 375 transitions. [2021-11-09 08:45:34,957 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 375 transitions. Word has length 72 [2021-11-09 08:45:34,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:34,958 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 375 transitions. [2021-11-09 08:45:34,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 08:45:34,958 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 375 transitions. [2021-11-09 08:45:34,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-09 08:45:34,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:34,960 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] [2021-11-09 08:45:34,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:45:34,961 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:45:34,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:34,965 INFO L85 PathProgramCache]: Analyzing trace with hash 193243142, now seen corresponding path program 1 times [2021-11-09 08:45:34,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:34,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884892767] [2021-11-09 08:45:34,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:34,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:35,397 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 08:45:35,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:35,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884892767] [2021-11-09 08:45:35,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884892767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:35,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:35,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:45:35,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090099879] [2021-11-09 08:45:35,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:45:35,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:35,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:45:35,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:45:35,400 INFO L87 Difference]: Start difference. First operand 304 states and 375 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 08:45:35,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:35,614 INFO L93 Difference]: Finished difference Result 502 states and 615 transitions. [2021-11-09 08:45:35,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:45:35,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-09 08:45:35,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:35,618 INFO L225 Difference]: With dead ends: 502 [2021-11-09 08:45:35,618 INFO L226 Difference]: Without dead ends: 304 [2021-11-09 08:45:35,619 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:45:35,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-09 08:45:35,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-09 08:45:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 285 states have (on average 1.312280701754386) internal successors, (374), 303 states have internal predecessors, (374), 0 states have call successors, (0), 0 states 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 08:45:35,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 374 transitions. [2021-11-09 08:45:35,631 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 374 transitions. Word has length 78 [2021-11-09 08:45:35,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:35,634 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 374 transitions. [2021-11-09 08:45:35,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 08:45:35,635 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 374 transitions. [2021-11-09 08:45:35,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-09 08:45:35,636 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:35,636 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] [2021-11-09 08:45:35,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:45:35,637 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:45:35,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:35,637 INFO L85 PathProgramCache]: Analyzing trace with hash 450269211, now seen corresponding path program 1 times [2021-11-09 08:45:35,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:35,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410656081] [2021-11-09 08:45:35,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:35,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:36,363 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 08:45:36,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:36,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410656081] [2021-11-09 08:45:36,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410656081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:36,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:36,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:45:36,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642052588] [2021-11-09 08:45:36,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:45:36,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:36,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:45:36,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:45:36,366 INFO L87 Difference]: Start difference. First operand 304 states and 374 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 08:45:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:36,781 INFO L93 Difference]: Finished difference Result 483 states and 588 transitions. [2021-11-09 08:45:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:45:36,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-09 08:45:36,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:36,785 INFO L225 Difference]: With dead ends: 483 [2021-11-09 08:45:36,785 INFO L226 Difference]: Without dead ends: 304 [2021-11-09 08:45:36,786 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 08:45:36,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-09 08:45:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-09 08:45:36,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 285 states have (on average 1.3087719298245615) internal successors, (373), 303 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 08:45:36,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 373 transitions. [2021-11-09 08:45:36,801 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 373 transitions. Word has length 84 [2021-11-09 08:45:36,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:36,802 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 373 transitions. [2021-11-09 08:45:36,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 08:45:36,805 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 373 transitions. [2021-11-09 08:45:36,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-09 08:45:36,813 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:36,813 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] [2021-11-09 08:45:36,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:45:36,814 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:45:36,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:36,814 INFO L85 PathProgramCache]: Analyzing trace with hash 212824488, now seen corresponding path program 1 times [2021-11-09 08:45:36,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:36,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814825248] [2021-11-09 08:45:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:36,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:37,250 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 08:45:37,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:37,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814825248] [2021-11-09 08:45:37,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814825248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:37,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:37,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:45:37,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614190014] [2021-11-09 08:45:37,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:45:37,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:37,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:45:37,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:45:37,254 INFO L87 Difference]: Start difference. First operand 304 states and 373 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 08:45:37,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:37,926 INFO L93 Difference]: Finished difference Result 769 states and 967 transitions. [2021-11-09 08:45:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:45:37,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-09 08:45:37,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:37,931 INFO L225 Difference]: With dead ends: 769 [2021-11-09 08:45:37,931 INFO L226 Difference]: Without dead ends: 484 [2021-11-09 08:45:37,932 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 08:45:37,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-11-09 08:45:37,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 322. [2021-11-09 08:45:37,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 303 states have (on average 1.2904290429042904) internal successors, (391), 321 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 08:45:37,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 391 transitions. [2021-11-09 08:45:37,946 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 391 transitions. Word has length 90 [2021-11-09 08:45:37,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:37,948 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 391 transitions. [2021-11-09 08:45:37,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 08:45:37,949 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 391 transitions. [2021-11-09 08:45:37,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-09 08:45:37,950 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:37,950 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] [2021-11-09 08:45:37,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:45:37,951 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:45:37,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:37,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1901768230, now seen corresponding path program 1 times [2021-11-09 08:45:37,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:37,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381511233] [2021-11-09 08:45:37,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:37,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:38,595 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 08:45:38,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:38,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381511233] [2021-11-09 08:45:38,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381511233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:38,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:38,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:45:38,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936720983] [2021-11-09 08:45:38,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:45:38,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:38,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:45:38,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:45:38,599 INFO L87 Difference]: Start difference. First operand 322 states and 391 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 08:45:39,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:39,170 INFO L93 Difference]: Finished difference Result 456 states and 543 transitions. [2021-11-09 08:45:39,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:45:39,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-09 08:45:39,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:39,174 INFO L225 Difference]: With dead ends: 456 [2021-11-09 08:45:39,174 INFO L226 Difference]: Without dead ends: 322 [2021-11-09 08:45:39,175 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:45:39,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-09 08:45:39,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-11-09 08:45:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 303 states have (on average 1.283828382838284) internal successors, (389), 321 states have internal predecessors, (389), 0 states have call successors, (0), 0 states 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 08:45:39,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 389 transitions. [2021-11-09 08:45:39,189 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 389 transitions. Word has length 90 [2021-11-09 08:45:39,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:39,189 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 389 transitions. [2021-11-09 08:45:39,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 08:45:39,190 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 389 transitions. [2021-11-09 08:45:39,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-09 08:45:39,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:39,192 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] [2021-11-09 08:45:39,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:45:39,193 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:45:39,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:39,193 INFO L85 PathProgramCache]: Analyzing trace with hash -369000709, now seen corresponding path program 1 times [2021-11-09 08:45:39,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:39,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859199620] [2021-11-09 08:45:39,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:39,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:40,491 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 08:45:40,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:40,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859199620] [2021-11-09 08:45:40,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859199620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:40,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:40,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 08:45:40,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203448112] [2021-11-09 08:45:40,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:45:40,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:40,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:45:40,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:45:40,494 INFO L87 Difference]: Start difference. First operand 322 states and 389 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 08:45:41,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:41,607 INFO L93 Difference]: Finished difference Result 532 states and 623 transitions. [2021-11-09 08:45:41,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:45:41,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-09 08:45:41,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:41,611 INFO L225 Difference]: With dead ends: 532 [2021-11-09 08:45:41,612 INFO L226 Difference]: Without dead ends: 524 [2021-11-09 08:45:41,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:45:41,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-11-09 08:45:41,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 338. [2021-11-09 08:45:41,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 319 states have (on average 1.2695924764890283) internal successors, (405), 337 states have internal predecessors, (405), 0 states have call successors, (0), 0 states 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 08:45:41,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 405 transitions. [2021-11-09 08:45:41,627 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 405 transitions. Word has length 96 [2021-11-09 08:45:41,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:41,628 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 405 transitions. [2021-11-09 08:45:41,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 08:45:41,628 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 405 transitions. [2021-11-09 08:45:41,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 08:45:41,630 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:41,630 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 08:45:41,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:45:41,630 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:45:41,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:41,631 INFO L85 PathProgramCache]: Analyzing trace with hash 544006001, now seen corresponding path program 1 times [2021-11-09 08:45:41,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:41,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671676808] [2021-11-09 08:45:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:41,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:42,889 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 08:45:42,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:42,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671676808] [2021-11-09 08:45:42,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671676808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:42,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:42,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:45:42,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917399335] [2021-11-09 08:45:42,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:45:42,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:42,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:45:42,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:45:42,892 INFO L87 Difference]: Start difference. First operand 338 states and 405 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 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 08:45:46,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:46,765 INFO L93 Difference]: Finished difference Result 953 states and 1139 transitions. [2021-11-09 08:45:46,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:45:46,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 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 08:45:46,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:46,771 INFO L225 Difference]: With dead ends: 953 [2021-11-09 08:45:46,776 INFO L226 Difference]: Without dead ends: 639 [2021-11-09 08:45:46,777 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:45:46,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-11-09 08:45:46,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 365. [2021-11-09 08:45:46,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 346 states have (on average 1.2485549132947977) internal successors, (432), 364 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 08:45:46,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 432 transitions. [2021-11-09 08:45:46,805 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 432 transitions. Word has length 100 [2021-11-09 08:45:46,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:46,806 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 432 transitions. [2021-11-09 08:45:46,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 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 08:45:46,806 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 432 transitions. [2021-11-09 08:45:46,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 08:45:46,808 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:46,808 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 08:45:46,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 08:45:46,809 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:45:46,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:46,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1224064371, now seen corresponding path program 1 times [2021-11-09 08:45:46,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:46,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109341184] [2021-11-09 08:45:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:46,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:49,854 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 08:45:49,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:49,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109341184] [2021-11-09 08:45:49,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109341184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:49,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:49,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-09 08:45:49,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746638166] [2021-11-09 08:45:49,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 08:45:49,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:49,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 08:45:49,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:45:49,857 INFO L87 Difference]: Start difference. First operand 365 states and 432 transitions. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 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 08:46:15,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:15,447 INFO L93 Difference]: Finished difference Result 1194 states and 1401 transitions. [2021-11-09 08:46:15,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 08:46:15,448 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 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 08:46:15,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:15,455 INFO L225 Difference]: With dead ends: 1194 [2021-11-09 08:46:15,456 INFO L226 Difference]: Without dead ends: 986 [2021-11-09 08:46:15,458 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=224, Invalid=768, Unknown=0, NotChecked=0, Total=992 [2021-11-09 08:46:15,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-11-09 08:46:15,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 435. [2021-11-09 08:46:15,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 416 states have (on average 1.2475961538461537) internal successors, (519), 434 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 08:46:15,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 519 transitions. [2021-11-09 08:46:15,487 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 519 transitions. Word has length 100 [2021-11-09 08:46:15,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:15,487 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 519 transitions. [2021-11-09 08:46:15,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 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 08:46:15,488 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 519 transitions. [2021-11-09 08:46:15,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 08:46:15,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:15,490 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 08:46:15,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 08:46:15,491 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:46:15,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:15,492 INFO L85 PathProgramCache]: Analyzing trace with hash -413009691, now seen corresponding path program 1 times [2021-11-09 08:46:15,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:15,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948141023] [2021-11-09 08:46:15,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:15,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:46:18,478 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 08:46:18,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:18,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948141023] [2021-11-09 08:46:18,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948141023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:46:18,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:46:18,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-09 08:46:18,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414999256] [2021-11-09 08:46:18,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 08:46:18,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:18,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 08:46:18,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:46:18,482 INFO L87 Difference]: Start difference. First operand 435 states and 519 transitions. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 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 08:46:40,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:40,994 INFO L93 Difference]: Finished difference Result 1019 states and 1193 transitions. [2021-11-09 08:46:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 08:46:40,994 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 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 08:46:40,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:41,000 INFO L225 Difference]: With dead ends: 1019 [2021-11-09 08:46:41,001 INFO L226 Difference]: Without dead ends: 771 [2021-11-09 08:46:41,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2021-11-09 08:46:41,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-11-09 08:46:41,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 433. [2021-11-09 08:46:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 414 states have (on average 1.2439613526570048) internal successors, (515), 432 states have internal predecessors, (515), 0 states have call successors, (0), 0 states 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 08:46:41,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 515 transitions. [2021-11-09 08:46:41,034 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 515 transitions. Word has length 103 [2021-11-09 08:46:41,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:41,035 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 515 transitions. [2021-11-09 08:46:41,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 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 08:46:41,036 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 515 transitions. [2021-11-09 08:46:41,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-09 08:46:41,038 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:41,038 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] [2021-11-09 08:46:41,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 08:46:41,039 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:46:41,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:41,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1402762431, now seen corresponding path program 1 times [2021-11-09 08:46:41,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:41,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962088993] [2021-11-09 08:46:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:41,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:46:42,796 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 08:46:42,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:42,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962088993] [2021-11-09 08:46:42,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962088993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:46:42,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:46:42,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:46:42,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151766855] [2021-11-09 08:46:42,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:46:42,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:42,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:46:42,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:46:42,799 INFO L87 Difference]: Start difference. First operand 433 states and 515 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 08:46:56,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:56,569 INFO L93 Difference]: Finished difference Result 1396 states and 1655 transitions. [2021-11-09 08:46:56,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-09 08:46:56,569 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-09 08:46:56,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:56,577 INFO L225 Difference]: With dead ends: 1396 [2021-11-09 08:46:56,578 INFO L226 Difference]: Without dead ends: 1179 [2021-11-09 08:46:56,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2021-11-09 08:46:56,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-11-09 08:46:56,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 544. [2021-11-09 08:46:56,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 525 states have (on average 1.2419047619047618) internal successors, (652), 543 states have internal predecessors, (652), 0 states have call successors, (0), 0 states 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 08:46:56,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 652 transitions. [2021-11-09 08:46:56,619 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 652 transitions. Word has length 104 [2021-11-09 08:46:56,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:56,619 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 652 transitions. [2021-11-09 08:46:56,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 08:46:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 652 transitions. [2021-11-09 08:46:56,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-09 08:46:56,622 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:56,623 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] [2021-11-09 08:46:56,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 08:46:56,623 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:46:56,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:56,624 INFO L85 PathProgramCache]: Analyzing trace with hash 893289341, now seen corresponding path program 1 times [2021-11-09 08:46:56,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:56,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462888078] [2021-11-09 08:46:56,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:56,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:46:58,087 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 08:46:58,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:58,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462888078] [2021-11-09 08:46:58,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462888078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:46:58,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:46:58,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:46:58,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574365612] [2021-11-09 08:46:58,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:46:58,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:58,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:46:58,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:46:58,090 INFO L87 Difference]: Start difference. First operand 544 states and 652 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 08:47:01,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:01,708 INFO L93 Difference]: Finished difference Result 1314 states and 1566 transitions. [2021-11-09 08:47:01,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:47:01,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-09 08:47:01,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:01,715 INFO L225 Difference]: With dead ends: 1314 [2021-11-09 08:47:01,715 INFO L226 Difference]: Without dead ends: 797 [2021-11-09 08:47:01,716 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 08:47:01,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-11-09 08:47:01,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 544. [2021-11-09 08:47:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 525 states have (on average 1.2133333333333334) internal successors, (637), 543 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 08:47:01,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 637 transitions. [2021-11-09 08:47:01,750 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 637 transitions. Word has length 104 [2021-11-09 08:47:01,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:01,751 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 637 transitions. [2021-11-09 08:47:01,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 08:47:01,751 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 637 transitions. [2021-11-09 08:47:01,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-09 08:47:01,753 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:01,754 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] [2021-11-09 08:47:01,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 08:47:01,754 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:47:01,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:01,755 INFO L85 PathProgramCache]: Analyzing trace with hash 965675899, now seen corresponding path program 1 times [2021-11-09 08:47:01,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:01,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588895804] [2021-11-09 08:47:01,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:01,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:03,379 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 08:47:03,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:03,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588895804] [2021-11-09 08:47:03,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588895804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:03,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:03,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:47:03,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313657472] [2021-11-09 08:47:03,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:47:03,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:03,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:47:03,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:47:03,382 INFO L87 Difference]: Start difference. First operand 544 states and 637 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 08:47:04,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:04,715 INFO L93 Difference]: Finished difference Result 1225 states and 1411 transitions. [2021-11-09 08:47:04,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:47:04,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-09 08:47:04,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:04,721 INFO L225 Difference]: With dead ends: 1225 [2021-11-09 08:47:04,721 INFO L226 Difference]: Without dead ends: 652 [2021-11-09 08:47:04,723 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 08:47:04,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-09 08:47:04,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 542. [2021-11-09 08:47:04,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 523 states have (on average 1.1892925430210326) internal successors, (622), 541 states have internal predecessors, (622), 0 states have call successors, (0), 0 states 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 08:47:04,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 622 transitions. [2021-11-09 08:47:04,756 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 622 transitions. Word has length 104 [2021-11-09 08:47:04,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:04,757 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 622 transitions. [2021-11-09 08:47:04,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 08:47:04,758 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 622 transitions. [2021-11-09 08:47:04,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-09 08:47:04,759 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:04,760 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] [2021-11-09 08:47:04,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 08:47:04,760 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:47:04,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:04,761 INFO L85 PathProgramCache]: Analyzing trace with hash -666063228, now seen corresponding path program 1 times [2021-11-09 08:47:04,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:04,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461287801] [2021-11-09 08:47:04,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:04,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:07,485 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 08:47:07,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:07,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461287801] [2021-11-09 08:47:07,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461287801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:07,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:07,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-09 08:47:07,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700368798] [2021-11-09 08:47:07,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 08:47:07,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:07,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 08:47:07,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:47:07,489 INFO L87 Difference]: Start difference. First operand 542 states and 622 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 08:47:26,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:26,011 INFO L93 Difference]: Finished difference Result 1423 states and 1607 transitions. [2021-11-09 08:47:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 08:47:26,012 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-09 08:47:26,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:26,020 INFO L225 Difference]: With dead ends: 1423 [2021-11-09 08:47:26,020 INFO L226 Difference]: Without dead ends: 1205 [2021-11-09 08:47:26,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2021-11-09 08:47:26,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2021-11-09 08:47:26,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 564. [2021-11-09 08:47:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 545 states have (on average 1.1853211009174311) internal successors, (646), 563 states have internal predecessors, (646), 0 states have call successors, (0), 0 states 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 08:47:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 646 transitions. [2021-11-09 08:47:26,062 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 646 transitions. Word has length 106 [2021-11-09 08:47:26,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:26,062 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 646 transitions. [2021-11-09 08:47:26,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 08:47:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 646 transitions. [2021-11-09 08:47:26,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-09 08:47:26,065 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:26,066 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] [2021-11-09 08:47:26,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 08:47:26,066 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:47:26,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:26,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1257164806, now seen corresponding path program 1 times [2021-11-09 08:47:26,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:26,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092857388] [2021-11-09 08:47:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:26,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:28,795 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 08:47:28,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:28,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092857388] [2021-11-09 08:47:28,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092857388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:28,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:28,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-09 08:47:28,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143202476] [2021-11-09 08:47:28,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 08:47:28,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:28,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 08:47:28,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:47:28,798 INFO L87 Difference]: Start difference. First operand 564 states and 646 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 08:47:55,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:55,170 INFO L93 Difference]: Finished difference Result 993 states and 1131 transitions. [2021-11-09 08:47:55,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 08:47:55,171 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-09 08:47:55,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:55,175 INFO L225 Difference]: With dead ends: 993 [2021-11-09 08:47:55,175 INFO L226 Difference]: Without dead ends: 783 [2021-11-09 08:47:55,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-11-09 08:47:55,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-11-09 08:47:55,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 560. [2021-11-09 08:47:55,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 541 states have (on average 1.1848428835489833) internal successors, (641), 559 states have internal predecessors, (641), 0 states have call successors, (0), 0 states 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 08:47:55,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 641 transitions. [2021-11-09 08:47:55,212 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 641 transitions. Word has length 106 [2021-11-09 08:47:55,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:55,213 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 641 transitions. [2021-11-09 08:47:55,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 08:47:55,213 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 641 transitions. [2021-11-09 08:47:55,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-09 08:47:55,216 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:55,216 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] [2021-11-09 08:47:55,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 08:47:55,217 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:47:55,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:55,217 INFO L85 PathProgramCache]: Analyzing trace with hash -805910600, now seen corresponding path program 1 times [2021-11-09 08:47:55,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:55,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016011191] [2021-11-09 08:47:55,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:55,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:55,573 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 08:47:55,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:55,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016011191] [2021-11-09 08:47:55,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016011191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:55,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:55,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:47:55,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308351642] [2021-11-09 08:47:55,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:47:55,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:55,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:47:55,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:47:55,576 INFO L87 Difference]: Start difference. First operand 560 states and 641 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 08:47:56,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:56,088 INFO L93 Difference]: Finished difference Result 1141 states and 1301 transitions. [2021-11-09 08:47:56,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:47:56,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-09 08:47:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:56,092 INFO L225 Difference]: With dead ends: 1141 [2021-11-09 08:47:56,092 INFO L226 Difference]: Without dead ends: 540 [2021-11-09 08:47:56,093 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:47:56,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-09 08:47:56,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 514. [2021-11-09 08:47:56,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 495 states have (on average 1.1555555555555554) internal successors, (572), 513 states have internal predecessors, (572), 0 states have call successors, (0), 0 states 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 08:47:56,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 572 transitions. [2021-11-09 08:47:56,124 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 572 transitions. Word has length 109 [2021-11-09 08:47:56,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:56,125 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 572 transitions. [2021-11-09 08:47:56,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 08:47:56,125 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 572 transitions. [2021-11-09 08:47:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-09 08:47:56,127 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:56,128 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] [2021-11-09 08:47:56,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 08:47:56,128 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:47:56,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:56,129 INFO L85 PathProgramCache]: Analyzing trace with hash 698715380, now seen corresponding path program 1 times [2021-11-09 08:47:56,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:56,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709156136] [2021-11-09 08:47:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:56,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:59,096 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 08:47:59,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:59,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709156136] [2021-11-09 08:47:59,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709156136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:59,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:59,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 08:47:59,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519116775] [2021-11-09 08:47:59,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 08:47:59,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:59,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 08:47:59,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-09 08:47:59,100 INFO L87 Difference]: Start difference. First operand 514 states and 572 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 08:48:15,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:48:15,952 INFO L93 Difference]: Finished difference Result 1203 states and 1337 transitions. [2021-11-09 08:48:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 08:48:15,953 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-09 08:48:15,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:48:15,957 INFO L225 Difference]: With dead ends: 1203 [2021-11-09 08:48:15,957 INFO L226 Difference]: Without dead ends: 865 [2021-11-09 08:48:15,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=228, Invalid=474, Unknown=0, NotChecked=0, Total=702 [2021-11-09 08:48:15,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-11-09 08:48:15,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 522. [2021-11-09 08:48:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 503 states have (on average 1.1550695825049702) internal successors, (581), 521 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 08:48:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 581 transitions. [2021-11-09 08:48:15,989 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 581 transitions. Word has length 109 [2021-11-09 08:48:15,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:48:15,989 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 581 transitions. [2021-11-09 08:48:15,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 08:48:15,990 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 581 transitions. [2021-11-09 08:48:15,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-09 08:48:15,991 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:48:15,992 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] [2021-11-09 08:48:15,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 08:48:15,992 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:48:15,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:48:15,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1685058258, now seen corresponding path program 1 times [2021-11-09 08:48:15,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:48:15,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764887512] [2021-11-09 08:48:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:48:15,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:48:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:48:20,648 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 08:48:20,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:48:20,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764887512] [2021-11-09 08:48:20,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764887512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:48:20,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:48:20,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:48:20,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593183938] [2021-11-09 08:48:20,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:48:20,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:48:20,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:48:20,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:48:20,652 INFO L87 Difference]: Start difference. First operand 522 states and 581 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:48:26,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:48:26,397 INFO L93 Difference]: Finished difference Result 1049 states and 1164 transitions. [2021-11-09 08:48:26,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 08:48:26,398 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-09 08:48:26,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:48:26,400 INFO L225 Difference]: With dead ends: 1049 [2021-11-09 08:48:26,400 INFO L226 Difference]: Without dead ends: 552 [2021-11-09 08:48:26,401 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-11-09 08:48:26,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-11-09 08:48:26,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 518. [2021-11-09 08:48:26,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 499 states have (on average 1.154308617234469) internal successors, (576), 517 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 08:48:26,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 576 transitions. [2021-11-09 08:48:26,436 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 576 transitions. Word has length 110 [2021-11-09 08:48:26,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:48:26,436 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 576 transitions. [2021-11-09 08:48:26,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:48:26,437 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 576 transitions. [2021-11-09 08:48:26,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-09 08:48:26,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:48:26,439 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, 1] [2021-11-09 08:48:26,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-09 08:48:26,440 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:48:26,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:48:26,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1804561311, now seen corresponding path program 1 times [2021-11-09 08:48:26,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:48:26,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040028648] [2021-11-09 08:48:26,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:48:26,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:48:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:48:33,166 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 08:48:33,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:48:33,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040028648] [2021-11-09 08:48:33,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040028648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:48:33,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:48:33,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-09 08:48:33,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193671011] [2021-11-09 08:48:33,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 08:48:33,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:48:33,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 08:48:33,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:48:33,169 INFO L87 Difference]: Start difference. First operand 518 states and 576 transitions. Second operand has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 08:48:43,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:48:43,590 INFO L93 Difference]: Finished difference Result 921 states and 1020 transitions. [2021-11-09 08:48:43,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 08:48:43,591 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-09 08:48:43,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:48:43,595 INFO L225 Difference]: With dead ends: 921 [2021-11-09 08:48:43,595 INFO L226 Difference]: Without dead ends: 683 [2021-11-09 08:48:43,596 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2021-11-09 08:48:43,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-11-09 08:48:43,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 523. [2021-11-09 08:48:43,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 504 states have (on average 1.1547619047619047) internal successors, (582), 522 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 08:48:43,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 582 transitions. [2021-11-09 08:48:43,630 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 582 transitions. Word has length 116 [2021-11-09 08:48:43,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:48:43,631 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 582 transitions. [2021-11-09 08:48:43,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 08:48:43,631 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 582 transitions. [2021-11-09 08:48:43,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-09 08:48:43,633 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:48:43,633 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, 1, 1, 1] [2021-11-09 08:48:43,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-09 08:48:43,634 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:48:43,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:48:43,634 INFO L85 PathProgramCache]: Analyzing trace with hash 361163720, now seen corresponding path program 1 times [2021-11-09 08:48:43,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:48:43,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424788322] [2021-11-09 08:48:43,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:48:43,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:48:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:48:45,948 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 08:48:45,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:48:45,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424788322] [2021-11-09 08:48:45,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424788322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:48:45,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:48:45,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 08:48:45,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561485852] [2021-11-09 08:48:45,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 08:48:45,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:48:45,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 08:48:45,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-09 08:48:45,952 INFO L87 Difference]: Start difference. First operand 523 states and 582 transitions. Second operand has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 08:49:04,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:49:04,316 INFO L93 Difference]: Finished difference Result 1372 states and 1519 transitions. [2021-11-09 08:49:04,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 08:49:04,319 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-09 08:49:04,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:49:04,324 INFO L225 Difference]: With dead ends: 1372 [2021-11-09 08:49:04,324 INFO L226 Difference]: Without dead ends: 1156 [2021-11-09 08:49:04,326 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=261, Invalid=929, Unknown=0, NotChecked=0, Total=1190 [2021-11-09 08:49:04,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-09 08:49:04,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 532. [2021-11-09 08:49:04,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 513 states have (on average 1.1539961013645224) internal successors, (592), 531 states have internal predecessors, (592), 0 states have call successors, (0), 0 states 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 08:49:04,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 592 transitions. [2021-11-09 08:49:04,364 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 592 transitions. Word has length 118 [2021-11-09 08:49:04,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:49:04,364 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 592 transitions. [2021-11-09 08:49:04,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 08:49:04,365 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 592 transitions. [2021-11-09 08:49:04,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-09 08:49:04,366 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:49:04,367 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, 1, 1, 1] [2021-11-09 08:49:04,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-09 08:49:04,367 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:49:04,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:49:04,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1747949130, now seen corresponding path program 1 times [2021-11-09 08:49:04,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:49:04,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259604725] [2021-11-09 08:49:04,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:49:04,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:49:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:49:08,284 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 08:49:08,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:49:08,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259604725] [2021-11-09 08:49:08,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259604725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:49:08,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:49:08,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-09 08:49:08,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944118910] [2021-11-09 08:49:08,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-09 08:49:08,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:49:08,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-09 08:49:08,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-11-09 08:49:08,286 INFO L87 Difference]: Start difference. First operand 532 states and 592 transitions. Second operand has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 08:49:41,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:49:41,526 INFO L93 Difference]: Finished difference Result 1698 states and 1890 transitions. [2021-11-09 08:49:41,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-09 08:49:41,527 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-09 08:49:41,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:49:41,534 INFO L225 Difference]: With dead ends: 1698 [2021-11-09 08:49:41,534 INFO L226 Difference]: Without dead ends: 1242 [2021-11-09 08:49:41,536 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=280, Invalid=1280, Unknown=0, NotChecked=0, Total=1560 [2021-11-09 08:49:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-11-09 08:49:41,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 593. [2021-11-09 08:49:41,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 574 states have (on average 1.146341463414634) internal successors, (658), 592 states have internal predecessors, (658), 0 states have call successors, (0), 0 states 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 08:49:41,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 658 transitions. [2021-11-09 08:49:41,584 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 658 transitions. Word has length 118 [2021-11-09 08:49:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:49:41,584 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 658 transitions. [2021-11-09 08:49:41,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 08:49:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 658 transitions. [2021-11-09 08:49:41,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-09 08:49:41,587 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:49:41,587 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, 1, 1, 1] [2021-11-09 08:49:41,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-09 08:49:41,588 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:49:41,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:49:41,589 INFO L85 PathProgramCache]: Analyzing trace with hash -945947060, now seen corresponding path program 1 times [2021-11-09 08:49:41,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:49:41,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850805711] [2021-11-09 08:49:41,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:49:41,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:49:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:49:48,139 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 08:49:48,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:49:48,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850805711] [2021-11-09 08:49:48,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850805711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:49:48,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:49:48,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-09 08:49:48,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200803196] [2021-11-09 08:49:48,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 08:49:48,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:49:48,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 08:49:48,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2021-11-09 08:49:48,142 INFO L87 Difference]: Start difference. First operand 593 states and 658 transitions. Second operand has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 22 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 08:50:31,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:50:31,627 INFO L93 Difference]: Finished difference Result 1214 states and 1337 transitions. [2021-11-09 08:50:31,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-09 08:50:31,628 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 22 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-09 08:50:31,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:50:31,634 INFO L225 Difference]: With dead ends: 1214 [2021-11-09 08:50:31,634 INFO L226 Difference]: Without dead ends: 935 [2021-11-09 08:50:31,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=718, Invalid=3064, Unknown=0, NotChecked=0, Total=3782 [2021-11-09 08:50:31,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2021-11-09 08:50:31,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 639. [2021-11-09 08:50:31,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 620 states have (on average 1.1403225806451613) internal successors, (707), 638 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 08:50:31,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 707 transitions. [2021-11-09 08:50:31,683 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 707 transitions. Word has length 118 [2021-11-09 08:50:31,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:50:31,684 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 707 transitions. [2021-11-09 08:50:31,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 22 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 08:50:31,684 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 707 transitions. [2021-11-09 08:50:31,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-09 08:50:31,686 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:50:31,686 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, 1, 1, 1] [2021-11-09 08:50:31,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-09 08:50:31,687 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:50:31,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:50:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1030993729, now seen corresponding path program 1 times [2021-11-09 08:50:31,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:50:31,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298362199] [2021-11-09 08:50:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:50:31,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:50:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:50:33,280 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 08:50:33,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:50:33,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298362199] [2021-11-09 08:50:33,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298362199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:50:33,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:50:33,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:50:33,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360488627] [2021-11-09 08:50:33,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:50:33,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:50:33,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:50:33,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:50:33,283 INFO L87 Difference]: Start difference. First operand 639 states and 707 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 08:50:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:50:41,981 INFO L93 Difference]: Finished difference Result 1023 states and 1134 transitions. [2021-11-09 08:50:41,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:50:41,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-09 08:50:41,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:50:41,985 INFO L225 Difference]: With dead ends: 1023 [2021-11-09 08:50:41,985 INFO L226 Difference]: Without dead ends: 870 [2021-11-09 08:50:41,986 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:50:41,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2021-11-09 08:50:42,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 663. [2021-11-09 08:50:42,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 644 states have (on average 1.1444099378881987) internal successors, (737), 662 states have internal predecessors, (737), 0 states have call successors, (0), 0 states 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 08:50:42,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 737 transitions. [2021-11-09 08:50:42,027 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 737 transitions. Word has length 118 [2021-11-09 08:50:42,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:50:42,028 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 737 transitions. [2021-11-09 08:50:42,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 08:50:42,028 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 737 transitions. [2021-11-09 08:50:42,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-09 08:50:42,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:50:42,030 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, 1, 1, 1] [2021-11-09 08:50:42,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-09 08:50:42,030 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:50:42,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:50:42,031 INFO L85 PathProgramCache]: Analyzing trace with hash 772828291, now seen corresponding path program 1 times [2021-11-09 08:50:42,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:50:42,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644454388] [2021-11-09 08:50:42,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:50:42,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:50:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:50:44,018 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 08:50:44,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:50:44,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644454388] [2021-11-09 08:50:44,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644454388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:50:44,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:50:44,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-09 08:50:44,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19729310] [2021-11-09 08:50:44,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 08:50:44,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:50:44,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 08:50:44,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:50:44,021 INFO L87 Difference]: Start difference. First operand 663 states and 737 transitions. Second operand has 15 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 08:51:00,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:51:00,083 INFO L93 Difference]: Finished difference Result 1574 states and 1756 transitions. [2021-11-09 08:51:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 08:51:00,083 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-09 08:51:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:51:00,089 INFO L225 Difference]: With dead ends: 1574 [2021-11-09 08:51:00,089 INFO L226 Difference]: Without dead ends: 1212 [2021-11-09 08:51:00,090 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-11-09 08:51:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2021-11-09 08:51:00,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 668. [2021-11-09 08:51:00,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 649 states have (on average 1.1432973805855162) internal successors, (742), 667 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 08:51:00,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 742 transitions. [2021-11-09 08:51:00,140 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 742 transitions. Word has length 118 [2021-11-09 08:51:00,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:51:00,141 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 742 transitions. [2021-11-09 08:51:00,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 08:51:00,141 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 742 transitions. [2021-11-09 08:51:00,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-09 08:51:00,144 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:51:00,144 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, 1, 1, 1, 1] [2021-11-09 08:51:00,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-09 08:51:00,145 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:51:00,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:51:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash 25635969, now seen corresponding path program 1 times [2021-11-09 08:51:00,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:51:00,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767754840] [2021-11-09 08:51:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:51:00,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:51:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:51:04,607 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 08:51:04,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:51:04,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767754840] [2021-11-09 08:51:04,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767754840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:51:04,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:51:04,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-09 08:51:04,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683351093] [2021-11-09 08:51:04,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 08:51:04,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:51:04,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 08:51:04,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-11-09 08:51:04,612 INFO L87 Difference]: Start difference. First operand 668 states and 742 transitions. Second operand has 22 states, 22 states have (on average 5.409090909090909) internal successors, (119), 22 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 08:51:41,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:51:41,396 INFO L93 Difference]: Finished difference Result 1887 states and 2093 transitions. [2021-11-09 08:51:41,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-09 08:51:41,397 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.409090909090909) internal successors, (119), 22 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-09 08:51:41,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:51:41,418 INFO L225 Difference]: With dead ends: 1887 [2021-11-09 08:51:41,418 INFO L226 Difference]: Without dead ends: 1713 [2021-11-09 08:51:41,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2107 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1039, Invalid=5603, Unknown=0, NotChecked=0, Total=6642 [2021-11-09 08:51:41,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-11-09 08:51:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 759. [2021-11-09 08:51:41,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 740 states have (on average 1.1445945945945946) internal successors, (847), 758 states have internal predecessors, (847), 0 states have call successors, (0), 0 states 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 08:51:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 847 transitions. [2021-11-09 08:51:41,488 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 847 transitions. Word has length 119 [2021-11-09 08:51:41,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:51:41,488 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 847 transitions. [2021-11-09 08:51:41,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.409090909090909) internal successors, (119), 22 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 08:51:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 847 transitions. [2021-11-09 08:51:41,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-09 08:51:41,491 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:51:41,491 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, 1, 1, 1, 1] [2021-11-09 08:51:41,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-09 08:51:41,492 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:51:41,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:51:41,493 INFO L85 PathProgramCache]: Analyzing trace with hash 283801407, now seen corresponding path program 1 times [2021-11-09 08:51:41,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:51:41,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536104582] [2021-11-09 08:51:41,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:51:41,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:51:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:51:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:51:45,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:51:45,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536104582] [2021-11-09 08:51:45,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536104582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:51:45,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:51:45,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-09 08:51:45,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282181029] [2021-11-09 08:51:45,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 08:51:45,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:51:45,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 08:51:45,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:51:45,427 INFO L87 Difference]: Start difference. First operand 759 states and 847 transitions. Second operand has 14 states, 14 states have (on average 8.5) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 08:52:14,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:52:14,228 INFO L93 Difference]: Finished difference Result 1457 states and 1617 transitions. [2021-11-09 08:52:14,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-09 08:52:14,229 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-09 08:52:14,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:52:14,236 INFO L225 Difference]: With dead ends: 1457 [2021-11-09 08:52:14,236 INFO L226 Difference]: Without dead ends: 1300 [2021-11-09 08:52:14,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=413, Invalid=1749, Unknown=0, NotChecked=0, Total=2162 [2021-11-09 08:52:14,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-11-09 08:52:14,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 821. [2021-11-09 08:52:14,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 802 states have (on average 1.139650872817955) internal successors, (914), 820 states have internal predecessors, (914), 0 states have call successors, (0), 0 states 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 08:52:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 914 transitions. [2021-11-09 08:52:14,300 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 914 transitions. Word has length 119 [2021-11-09 08:52:14,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:52:14,301 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 914 transitions. [2021-11-09 08:52:14,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 08:52:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 914 transitions. [2021-11-09 08:52:14,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-09 08:52:14,303 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:52:14,303 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, 1, 1, 1, 1] [2021-11-09 08:52:14,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-09 08:52:14,304 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:52:14,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:52:14,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1407374213, now seen corresponding path program 1 times [2021-11-09 08:52:14,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:52:14,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752362328] [2021-11-09 08:52:14,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:52:14,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:52:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:52:17,789 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 08:52:17,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:52:17,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752362328] [2021-11-09 08:52:17,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752362328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:52:17,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:52:17,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-09 08:52:17,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734989430] [2021-11-09 08:52:17,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 08:52:17,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:52:17,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 08:52:17,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:52:17,791 INFO L87 Difference]: Start difference. First operand 821 states and 914 transitions. Second operand has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 08:52:42,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:52:42,439 INFO L93 Difference]: Finished difference Result 1905 states and 2114 transitions. [2021-11-09 08:52:42,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-09 08:52:42,440 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-09 08:52:42,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:52:42,448 INFO L225 Difference]: With dead ends: 1905 [2021-11-09 08:52:42,448 INFO L226 Difference]: Without dead ends: 1749 [2021-11-09 08:52:42,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=582, Invalid=2070, Unknown=0, NotChecked=0, Total=2652 [2021-11-09 08:52:42,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2021-11-09 08:52:42,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 833. [2021-11-09 08:52:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 814 states have (on average 1.135135135135135) internal successors, (924), 832 states have internal predecessors, (924), 0 states have call successors, (0), 0 states 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 08:52:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 924 transitions. [2021-11-09 08:52:42,522 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 924 transitions. Word has length 119 [2021-11-09 08:52:42,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:52:42,523 INFO L470 AbstractCegarLoop]: Abstraction has 833 states and 924 transitions. [2021-11-09 08:52:42,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 08:52:42,523 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 924 transitions. [2021-11-09 08:52:42,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 08:52:42,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:52:42,526 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, 1, 1, 1, 1, 1, 1] [2021-11-09 08:52:42,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-09 08:52:42,527 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:52:42,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:52:42,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1440444554, now seen corresponding path program 1 times [2021-11-09 08:52:42,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:52:42,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646352098] [2021-11-09 08:52:42,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:52:42,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:52:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:52:45,395 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 08:52:45,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:52:45,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646352098] [2021-11-09 08:52:45,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646352098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:52:45,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:52:45,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 08:52:45,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433478353] [2021-11-09 08:52:45,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:52:45,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:52:45,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:52:45,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:52:45,397 INFO L87 Difference]: Start difference. First operand 833 states and 924 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 08:52:56,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:52:56,271 INFO L93 Difference]: Finished difference Result 1616 states and 1798 transitions. [2021-11-09 08:52:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:52:56,272 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-09 08:52:56,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:52:56,277 INFO L225 Difference]: With dead ends: 1616 [2021-11-09 08:52:56,278 INFO L226 Difference]: Without dead ends: 1235 [2021-11-09 08:52:56,279 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2021-11-09 08:52:56,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2021-11-09 08:52:56,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 843. [2021-11-09 08:52:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 824 states have (on average 1.1347087378640777) internal successors, (935), 842 states have internal predecessors, (935), 0 states have call successors, (0), 0 states 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 08:52:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 935 transitions. [2021-11-09 08:52:56,369 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 935 transitions. Word has length 121 [2021-11-09 08:52:56,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:52:56,369 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 935 transitions. [2021-11-09 08:52:56,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 08:52:56,370 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 935 transitions. [2021-11-09 08:52:56,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 08:52:56,372 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:52:56,373 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, 1, 1, 1, 1, 1, 1] [2021-11-09 08:52:56,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-09 08:52:56,373 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:52:56,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:52:56,374 INFO L85 PathProgramCache]: Analyzing trace with hash 943480184, now seen corresponding path program 1 times [2021-11-09 08:52:56,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:52:56,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539834203] [2021-11-09 08:52:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:52:56,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:52:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:52:58,708 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 08:52:58,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:52:58,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539834203] [2021-11-09 08:52:58,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539834203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:52:58,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:52:58,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 08:52:58,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076577645] [2021-11-09 08:52:58,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:52:58,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:52:58,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:52:58,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:52:58,711 INFO L87 Difference]: Start difference. First operand 843 states and 935 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 08:53:12,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:53:12,657 INFO L93 Difference]: Finished difference Result 1740 states and 1928 transitions. [2021-11-09 08:53:12,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-09 08:53:12,661 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-09 08:53:12,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:53:12,668 INFO L225 Difference]: With dead ends: 1740 [2021-11-09 08:53:12,668 INFO L226 Difference]: Without dead ends: 1581 [2021-11-09 08:53:12,669 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 08:53:12,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2021-11-09 08:53:12,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 933. [2021-11-09 08:53:12,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 914 states have (on average 1.135667396061269) internal successors, (1038), 932 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states 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 08:53:12,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1038 transitions. [2021-11-09 08:53:12,736 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1038 transitions. Word has length 121 [2021-11-09 08:53:12,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:53:12,737 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 1038 transitions. [2021-11-09 08:53:12,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 08:53:12,737 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1038 transitions. [2021-11-09 08:53:12,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 08:53:12,740 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:53:12,740 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, 1, 1, 1, 1, 1, 1] [2021-11-09 08:53:12,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-09 08:53:12,741 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:53:12,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:53:12,741 INFO L85 PathProgramCache]: Analyzing trace with hash -644867718, now seen corresponding path program 1 times [2021-11-09 08:53:12,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:53:12,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006916018] [2021-11-09 08:53:12,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:53:12,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:53:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:53:15,168 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 08:53:15,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:53:15,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006916018] [2021-11-09 08:53:15,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006916018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:53:15,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:53:15,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 08:53:15,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85759479] [2021-11-09 08:53:15,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:53:15,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:53:15,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:53:15,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:53:15,173 INFO L87 Difference]: Start difference. First operand 933 states and 1038 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 08:53:30,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:53:30,075 INFO L93 Difference]: Finished difference Result 1635 states and 1819 transitions. [2021-11-09 08:53:30,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 08:53:30,076 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-09 08:53:30,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:53:30,083 INFO L225 Difference]: With dead ends: 1635 [2021-11-09 08:53:30,084 INFO L226 Difference]: Without dead ends: 1406 [2021-11-09 08:53:30,085 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2021-11-09 08:53:30,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2021-11-09 08:53:30,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 918. [2021-11-09 08:53:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 899 states have (on average 1.135706340378198) internal successors, (1021), 917 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states 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 08:53:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1021 transitions. [2021-11-09 08:53:30,152 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1021 transitions. Word has length 121 [2021-11-09 08:53:30,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:53:30,153 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 1021 transitions. [2021-11-09 08:53:30,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 08:53:30,153 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1021 transitions. [2021-11-09 08:53:30,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 08:53:30,156 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:53:30,156 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, 1, 1, 1, 1, 1, 1] [2021-11-09 08:53:30,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-09 08:53:30,157 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:53:30,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:53:30,157 INFO L85 PathProgramCache]: Analyzing trace with hash -85879114, now seen corresponding path program 1 times [2021-11-09 08:53:30,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:53:30,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392291409] [2021-11-09 08:53:30,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:53:30,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:53:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:53:41,178 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 08:53:41,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:53:41,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392291409] [2021-11-09 08:53:41,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392291409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:53:41,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:53:41,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-09 08:53:41,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350391061] [2021-11-09 08:53:41,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 08:53:41,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:53:41,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 08:53:41,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:53:41,180 INFO L87 Difference]: Start difference. First operand 918 states and 1021 transitions. Second operand has 15 states, 15 states have (on average 8.066666666666666) internal successors, (121), 15 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 08:53:58,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:53:58,096 INFO L93 Difference]: Finished difference Result 1302 states and 1443 transitions. [2021-11-09 08:53:58,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 08:53:58,097 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.066666666666666) internal successors, (121), 15 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-09 08:53:58,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:53:58,103 INFO L225 Difference]: With dead ends: 1302 [2021-11-09 08:53:58,103 INFO L226 Difference]: Without dead ends: 841 [2021-11-09 08:53:58,105 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 08:53:58,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2021-11-09 08:53:58,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 810. [2021-11-09 08:53:58,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 791 states have (on average 1.1327433628318584) internal successors, (896), 809 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 08:53:58,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 896 transitions. [2021-11-09 08:53:58,187 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 896 transitions. Word has length 121 [2021-11-09 08:53:58,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:53:58,187 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 896 transitions. [2021-11-09 08:53:58,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.066666666666666) internal successors, (121), 15 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 08:53:58,188 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 896 transitions. [2021-11-09 08:53:58,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 08:53:58,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:53:58,190 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, 1, 1, 1, 1, 1, 1] [2021-11-09 08:53:58,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-09 08:53:58,191 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:53:58,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:53:58,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1597679276, now seen corresponding path program 1 times [2021-11-09 08:53:58,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:53:58,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873531194] [2021-11-09 08:53:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:53:58,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:54:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:54:06,882 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 08:54:06,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:54:06,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873531194] [2021-11-09 08:54:06,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873531194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:54:06,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:54:06,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-09 08:54:06,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371294681] [2021-11-09 08:54:06,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 08:54:06,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:54:06,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 08:54:06,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:54:06,885 INFO L87 Difference]: Start difference. First operand 810 states and 896 transitions. Second operand has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 08:54:19,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:54:19,513 INFO L93 Difference]: Finished difference Result 1218 states and 1351 transitions. [2021-11-09 08:54:19,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 08:54:19,514 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-09 08:54:19,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:54:19,520 INFO L225 Difference]: With dead ends: 1218 [2021-11-09 08:54:19,520 INFO L226 Difference]: Without dead ends: 816 [2021-11-09 08:54:19,529 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2021-11-09 08:54:19,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2021-11-09 08:54:19,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 633. [2021-11-09 08:54:19,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 614 states have (on average 1.1400651465798046) internal successors, (700), 632 states have internal predecessors, (700), 0 states have call successors, (0), 0 states 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 08:54:19,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 700 transitions. [2021-11-09 08:54:19,582 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 700 transitions. Word has length 121 [2021-11-09 08:54:19,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:54:19,582 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 700 transitions. [2021-11-09 08:54:19,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 08:54:19,582 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 700 transitions. [2021-11-09 08:54:19,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-09 08:54:19,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:54:19,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:54:19,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-09 08:54:19,584 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:54:19,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:54:19,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1873322857, now seen corresponding path program 1 times [2021-11-09 08:54:19,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:54:19,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413396471] [2021-11-09 08:54:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:54:19,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:54:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:54:22,155 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 08:54:22,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:54:22,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413396471] [2021-11-09 08:54:22,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413396471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:54:22,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:54:22,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-09 08:54:22,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165125985] [2021-11-09 08:54:22,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 08:54:22,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:54:22,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 08:54:22,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:54:22,158 INFO L87 Difference]: Start difference. First operand 633 states and 700 transitions. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 08:54:36,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:54:36,631 INFO L93 Difference]: Finished difference Result 1524 states and 1692 transitions. [2021-11-09 08:54:36,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 08:54:36,632 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2021-11-09 08:54:36,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:54:36,638 INFO L225 Difference]: With dead ends: 1524 [2021-11-09 08:54:36,638 INFO L226 Difference]: Without dead ends: 1291 [2021-11-09 08:54:36,640 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2021-11-09 08:54:36,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-11-09 08:54:36,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 684. [2021-11-09 08:54:36,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 665 states have (on average 1.1353383458646618) internal successors, (755), 683 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:54:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 755 transitions. [2021-11-09 08:54:36,705 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 755 transitions. Word has length 124 [2021-11-09 08:54:36,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:54:36,705 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 755 transitions. [2021-11-09 08:54:36,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 08:54:36,706 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 755 transitions. [2021-11-09 08:54:36,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-09 08:54:36,708 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:54:36,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:54:36,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-09 08:54:36,708 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:54:36,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:54:36,709 INFO L85 PathProgramCache]: Analyzing trace with hash 372256597, now seen corresponding path program 1 times [2021-11-09 08:54:36,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:54:36,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131592723] [2021-11-09 08:54:36,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:54:36,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:54:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:54:39,244 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 08:54:39,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:54:39,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131592723] [2021-11-09 08:54:39,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131592723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:54:39,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:54:39,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 08:54:39,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794272688] [2021-11-09 08:54:39,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:54:39,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:54:39,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:54:39,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:54:39,248 INFO L87 Difference]: Start difference. First operand 684 states and 755 transitions. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 08:54:48,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:54:48,229 INFO L93 Difference]: Finished difference Result 1103 states and 1222 transitions. [2021-11-09 08:54:48,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 08:54:48,230 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2021-11-09 08:54:48,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:54:48,232 INFO L225 Difference]: With dead ends: 1103 [2021-11-09 08:54:48,232 INFO L226 Difference]: Without dead ends: 787 [2021-11-09 08:54:48,233 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:54:48,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-11-09 08:54:48,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 667. [2021-11-09 08:54:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 648 states have (on average 1.1311728395061729) internal successors, (733), 666 states have internal predecessors, (733), 0 states have call successors, (0), 0 states 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 08:54:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 733 transitions. [2021-11-09 08:54:48,303 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 733 transitions. Word has length 124 [2021-11-09 08:54:48,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:54:48,304 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 733 transitions. [2021-11-09 08:54:48,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 08:54:48,305 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 733 transitions. [2021-11-09 08:54:48,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-09 08:54:48,307 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:54:48,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:54:48,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-09 08:54:48,308 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:54:48,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:54:48,308 INFO L85 PathProgramCache]: Analyzing trace with hash 88251801, now seen corresponding path program 1 times [2021-11-09 08:54:48,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:54:48,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544832353] [2021-11-09 08:54:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:54:48,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:54:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:54:53,334 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 08:54:53,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:54:53,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544832353] [2021-11-09 08:54:53,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544832353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:54:53,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:54:53,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-09 08:54:53,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062447313] [2021-11-09 08:54:53,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 08:54:53,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:54:53,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 08:54:53,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2021-11-09 08:54:53,339 INFO L87 Difference]: Start difference. First operand 667 states and 733 transitions. Second operand has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 08:55:13,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:55:13,608 INFO L93 Difference]: Finished difference Result 1361 states and 1506 transitions. [2021-11-09 08:55:13,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 08:55:13,609 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2021-11-09 08:55:13,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:55:13,611 INFO L225 Difference]: With dead ends: 1361 [2021-11-09 08:55:13,611 INFO L226 Difference]: Without dead ends: 1128 [2021-11-09 08:55:13,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=269, Invalid=1291, Unknown=0, NotChecked=0, Total=1560 [2021-11-09 08:55:13,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-11-09 08:55:13,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 682. [2021-11-09 08:55:13,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 663 states have (on average 1.1312217194570136) internal successors, (750), 681 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 08:55:13,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 750 transitions. [2021-11-09 08:55:13,673 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 750 transitions. Word has length 124 [2021-11-09 08:55:13,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:55:13,673 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 750 transitions. [2021-11-09 08:55:13,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 08:55:13,674 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 750 transitions. [2021-11-09 08:55:13,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-09 08:55:13,675 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:55:13,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:55:13,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-09 08:55:13,675 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:55:13,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:55:13,676 INFO L85 PathProgramCache]: Analyzing trace with hash 161314119, now seen corresponding path program 1 times [2021-11-09 08:55:13,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:55:13,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593591256] [2021-11-09 08:55:13,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:55:13,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:55:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:55:20,122 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 08:55:20,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:55:20,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593591256] [2021-11-09 08:55:20,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593591256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:55:20,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:55:20,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 08:55:20,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662829900] [2021-11-09 08:55:20,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:55:20,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:55:20,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:55:20,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:55:20,125 INFO L87 Difference]: Start difference. First operand 682 states and 750 transitions. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 08:55:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:55:26,882 INFO L93 Difference]: Finished difference Result 1038 states and 1144 transitions. [2021-11-09 08:55:26,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:55:26,882 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-09 08:55:26,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:55:26,884 INFO L225 Difference]: With dead ends: 1038 [2021-11-09 08:55:26,884 INFO L226 Difference]: Without dead ends: 876 [2021-11-09 08:55:26,885 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2021-11-09 08:55:26,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-11-09 08:55:26,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 688. [2021-11-09 08:55:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 669 states have (on average 1.1315396113602392) internal successors, (757), 687 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:55:26,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 757 transitions. [2021-11-09 08:55:26,928 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 757 transitions. Word has length 127 [2021-11-09 08:55:26,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:55:26,929 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 757 transitions. [2021-11-09 08:55:26,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 08:55:26,929 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 757 transitions. [2021-11-09 08:55:26,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-09 08:55:26,930 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:55:26,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:55:26,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-09 08:55:26,930 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:55:26,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:55:26,931 INFO L85 PathProgramCache]: Analyzing trace with hash -337355653, now seen corresponding path program 1 times [2021-11-09 08:55:26,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:55:26,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593116513] [2021-11-09 08:55:26,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:55:26,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:55:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:55:32,343 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 08:55:32,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:55:32,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593116513] [2021-11-09 08:55:32,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593116513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:55:32,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:55:32,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:55:32,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593762520] [2021-11-09 08:55:32,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:55:32,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:55:32,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:55:32,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:55:32,346 INFO L87 Difference]: Start difference. First operand 688 states and 757 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 08:55:38,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:55:38,181 INFO L93 Difference]: Finished difference Result 1226 states and 1341 transitions. [2021-11-09 08:55:38,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 08:55:38,181 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-09 08:55:38,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:55:38,183 INFO L225 Difference]: With dead ends: 1226 [2021-11-09 08:55:38,183 INFO L226 Difference]: Without dead ends: 772 [2021-11-09 08:55:38,184 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-09 08:55:38,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-11-09 08:55:38,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 669. [2021-11-09 08:55:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 650 states have (on average 1.1307692307692307) internal successors, (735), 668 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 08:55:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 735 transitions. [2021-11-09 08:55:38,232 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 735 transitions. Word has length 127 [2021-11-09 08:55:38,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:55:38,232 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 735 transitions. [2021-11-09 08:55:38,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 08:55:38,232 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 735 transitions. [2021-11-09 08:55:38,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-09 08:55:38,233 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:55:38,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:55:38,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-09 08:55:38,234 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:55:38,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:55:38,234 INFO L85 PathProgramCache]: Analyzing trace with hash 187195179, now seen corresponding path program 1 times [2021-11-09 08:55:38,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:55:38,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552048092] [2021-11-09 08:55:38,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:55:38,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:55:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:55:38,536 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 08:55:38,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:55:38,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552048092] [2021-11-09 08:55:38,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552048092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:55:38,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:55:38,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:55:38,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75178949] [2021-11-09 08:55:38,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:55:38,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:55:38,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:55:38,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:55:38,538 INFO L87 Difference]: Start difference. First operand 669 states and 735 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 08:55:38,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:55:38,679 INFO L93 Difference]: Finished difference Result 896 states and 987 transitions. [2021-11-09 08:55:38,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:55:38,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-09 08:55:38,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:55:38,682 INFO L225 Difference]: With dead ends: 896 [2021-11-09 08:55:38,682 INFO L226 Difference]: Without dead ends: 783 [2021-11-09 08:55:38,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:55:38,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-11-09 08:55:38,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 672. [2021-11-09 08:55:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 653 states have (on average 1.1301684532924963) internal successors, (738), 671 states have internal predecessors, (738), 0 states have call successors, (0), 0 states 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 08:55:38,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 738 transitions. [2021-11-09 08:55:38,727 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 738 transitions. Word has length 128 [2021-11-09 08:55:38,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:55:38,727 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 738 transitions. [2021-11-09 08:55:38,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 08:55:38,728 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 738 transitions. [2021-11-09 08:55:38,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-09 08:55:38,729 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:55:38,729 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:55:38,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-09 08:55:38,730 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:55:38,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:55:38,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1510363894, now seen corresponding path program 1 times [2021-11-09 08:55:38,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:55:38,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037494037] [2021-11-09 08:55:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:55:38,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:55:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:55:39,351 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 08:55:39,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:55:39,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037494037] [2021-11-09 08:55:39,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037494037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:55:39,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:55:39,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:55:39,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68022156] [2021-11-09 08:55:39,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:55:39,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:55:39,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:55:39,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:55:39,353 INFO L87 Difference]: Start difference. First operand 672 states and 738 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 08:55:39,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:55:39,987 INFO L93 Difference]: Finished difference Result 737 states and 813 transitions. [2021-11-09 08:55:39,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:55:39,987 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-09 08:55:39,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:55:39,989 INFO L225 Difference]: With dead ends: 737 [2021-11-09 08:55:39,989 INFO L226 Difference]: Without dead ends: 735 [2021-11-09 08:55:39,989 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-09 08:55:39,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-09 08:55:40,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 670. [2021-11-09 08:55:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 652 states have (on average 1.1288343558282208) internal successors, (736), 669 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 08:55:40,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 736 transitions. [2021-11-09 08:55:40,035 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 736 transitions. Word has length 129 [2021-11-09 08:55:40,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:55:40,035 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 736 transitions. [2021-11-09 08:55:40,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 08:55:40,035 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 736 transitions. [2021-11-09 08:55:40,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-09 08:55:40,036 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:55:40,037 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:55:40,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-09 08:55:40,037 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:55:40,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:55:40,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1212106020, now seen corresponding path program 1 times [2021-11-09 08:55:40,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:55:40,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772241897] [2021-11-09 08:55:40,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:55:40,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:55:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:55:40,704 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 08:55:40,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:55:40,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772241897] [2021-11-09 08:55:40,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772241897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:55:40,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:55:40,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:55:40,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570213047] [2021-11-09 08:55:40,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:55:40,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:55:40,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:55:40,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:55:40,707 INFO L87 Difference]: Start difference. First operand 670 states and 736 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 08:55:42,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:55:42,444 INFO L93 Difference]: Finished difference Result 922 states and 1012 transitions. [2021-11-09 08:55:42,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 08:55:42,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-09 08:55:42,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:55:42,446 INFO L225 Difference]: With dead ends: 922 [2021-11-09 08:55:42,446 INFO L226 Difference]: Without dead ends: 914 [2021-11-09 08:55:42,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:55:42,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-11-09 08:55:42,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 678. [2021-11-09 08:55:42,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 660 states have (on average 1.1272727272727272) internal successors, (744), 677 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 08:55:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 744 transitions. [2021-11-09 08:55:42,493 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 744 transitions. Word has length 129 [2021-11-09 08:55:42,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:55:42,493 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 744 transitions. [2021-11-09 08:55:42,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 08:55:42,494 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 744 transitions. [2021-11-09 08:55:42,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-09 08:55:42,495 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:55:42,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:55:42,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-09 08:55:42,495 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:55:42,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:55:42,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2021452646, now seen corresponding path program 1 times [2021-11-09 08:55:42,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:55:42,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694055774] [2021-11-09 08:55:42,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:55:42,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:55:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:55:44,047 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 08:55:44,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:55:44,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694055774] [2021-11-09 08:55:44,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694055774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:55:44,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:55:44,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:55:44,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086113960] [2021-11-09 08:55:44,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:55:44,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:55:44,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:55:44,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:55:44,050 INFO L87 Difference]: Start difference. First operand 678 states and 744 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 08:55:54,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:55:54,797 INFO L93 Difference]: Finished difference Result 1017 states and 1113 transitions. [2021-11-09 08:55:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:55:54,798 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-09 08:55:54,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:55:54,799 INFO L225 Difference]: With dead ends: 1017 [2021-11-09 08:55:54,799 INFO L226 Difference]: Without dead ends: 892 [2021-11-09 08:55:54,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:55:54,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-11-09 08:55:54,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 679. [2021-11-09 08:55:54,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 661 states have (on average 1.1270801815431164) internal successors, (745), 678 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 08:55:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 745 transitions. [2021-11-09 08:55:54,853 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 745 transitions. Word has length 129 [2021-11-09 08:55:54,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:55:54,853 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 745 transitions. [2021-11-09 08:55:54,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 08:55:54,853 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 745 transitions. [2021-11-09 08:55:54,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-09 08:55:54,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:55:54,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:55:54,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-09 08:55:54,856 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:55:54,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:55:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash -239098792, now seen corresponding path program 1 times [2021-11-09 08:55:54,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:55:54,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217038887] [2021-11-09 08:55:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:55:54,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:55:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:56:01,030 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 08:56:01,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:56:01,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217038887] [2021-11-09 08:56:01,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217038887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:56:01,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:56:01,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-09 08:56:01,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343648405] [2021-11-09 08:56:01,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 08:56:01,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:56:01,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 08:56:01,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2021-11-09 08:56:01,032 INFO L87 Difference]: Start difference. First operand 679 states and 745 transitions. Second operand has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 08:56:34,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:56:34,021 INFO L93 Difference]: Finished difference Result 1765 states and 1953 transitions. [2021-11-09 08:56:34,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-09 08:56:34,022 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-09 08:56:34,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:56:34,025 INFO L225 Difference]: With dead ends: 1765 [2021-11-09 08:56:34,025 INFO L226 Difference]: Without dead ends: 1763 [2021-11-09 08:56:34,027 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=518, Invalid=2238, Unknown=0, NotChecked=0, Total=2756 [2021-11-09 08:56:34,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-11-09 08:56:34,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 909. [2021-11-09 08:56:34,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 891 states have (on average 1.1346801346801347) internal successors, (1011), 908 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states 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 08:56:34,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1011 transitions. [2021-11-09 08:56:34,103 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1011 transitions. Word has length 131 [2021-11-09 08:56:34,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:56:34,104 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 1011 transitions. [2021-11-09 08:56:34,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 08:56:34,104 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1011 transitions. [2021-11-09 08:56:34,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-09 08:56:34,105 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:56:34,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:56:34,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-09 08:56:34,106 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:56:34,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:56:34,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1924517782, now seen corresponding path program 1 times [2021-11-09 08:56:34,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:56:34,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055411580] [2021-11-09 08:56:34,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:56:34,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:56:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:56:38,568 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 08:56:38,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:56:38,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055411580] [2021-11-09 08:56:38,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055411580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:56:38,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:56:38,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-09 08:56:38,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702016906] [2021-11-09 08:56:38,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 08:56:38,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:56:38,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 08:56:38,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-11-09 08:56:38,571 INFO L87 Difference]: Start difference. First operand 909 states and 1011 transitions. Second operand has 20 states, 20 states have (on average 6.55) internal successors, (131), 20 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 08:57:10,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:10,611 INFO L93 Difference]: Finished difference Result 1518 states and 1679 transitions. [2021-11-09 08:57:10,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 08:57:10,612 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.55) internal successors, (131), 20 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-09 08:57:10,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:10,614 INFO L225 Difference]: With dead ends: 1518 [2021-11-09 08:57:10,614 INFO L226 Difference]: Without dead ends: 1239 [2021-11-09 08:57:10,616 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=225, Invalid=897, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 08:57:10,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-11-09 08:57:10,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 873. [2021-11-09 08:57:10,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 855 states have (on average 1.1239766081871345) internal successors, (961), 872 states have internal predecessors, (961), 0 states have call successors, (0), 0 states 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 08:57:10,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 961 transitions. [2021-11-09 08:57:10,685 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 961 transitions. Word has length 131 [2021-11-09 08:57:10,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:10,686 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 961 transitions. [2021-11-09 08:57:10,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.55) internal successors, (131), 20 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 08:57:10,686 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 961 transitions. [2021-11-09 08:57:10,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-09 08:57:10,688 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:10,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:10,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-09 08:57:10,689 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:57:10,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:10,689 INFO L85 PathProgramCache]: Analyzing trace with hash 735837078, now seen corresponding path program 1 times [2021-11-09 08:57:10,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:10,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418144968] [2021-11-09 08:57:10,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:10,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:12,847 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 08:57:12,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:12,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418144968] [2021-11-09 08:57:12,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418144968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:12,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:12,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 08:57:12,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371123194] [2021-11-09 08:57:12,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:57:12,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:12,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:57:12,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:57:12,849 INFO L87 Difference]: Start difference. First operand 873 states and 961 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 08:57:20,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:20,109 INFO L93 Difference]: Finished difference Result 1310 states and 1446 transitions. [2021-11-09 08:57:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 08:57:20,110 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-09 08:57:20,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:20,112 INFO L225 Difference]: With dead ends: 1310 [2021-11-09 08:57:20,112 INFO L226 Difference]: Without dead ends: 1159 [2021-11-09 08:57:20,112 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:57:20,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2021-11-09 08:57:20,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 901. [2021-11-09 08:57:20,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 883 states have (on average 1.1268403171007928) internal successors, (995), 900 states have internal predecessors, (995), 0 states have call successors, (0), 0 states 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 08:57:20,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 995 transitions. [2021-11-09 08:57:20,182 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 995 transitions. Word has length 133 [2021-11-09 08:57:20,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:20,183 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 995 transitions. [2021-11-09 08:57:20,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 08:57:20,183 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 995 transitions. [2021-11-09 08:57:20,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-09 08:57:20,185 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:20,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:20,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-09 08:57:20,186 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:57:20,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:20,187 INFO L85 PathProgramCache]: Analyzing trace with hash 477671640, now seen corresponding path program 1 times [2021-11-09 08:57:20,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:20,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558134022] [2021-11-09 08:57:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:20,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:27,715 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 08:57:27,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:27,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558134022] [2021-11-09 08:57:27,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558134022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:27,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:27,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 08:57:27,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612496755] [2021-11-09 08:57:27,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:57:27,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:27,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:57:27,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:57:27,717 INFO L87 Difference]: Start difference. First operand 901 states and 995 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 08:57:36,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:36,356 INFO L93 Difference]: Finished difference Result 1276 states and 1410 transitions. [2021-11-09 08:57:36,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:57:36,357 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-09 08:57:36,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:36,359 INFO L225 Difference]: With dead ends: 1276 [2021-11-09 08:57:36,359 INFO L226 Difference]: Without dead ends: 1065 [2021-11-09 08:57:36,360 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:57:36,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-11-09 08:57:36,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 825. [2021-11-09 08:57:36,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 807 states have (on average 1.1164807930607188) internal successors, (901), 824 states have internal predecessors, (901), 0 states have call successors, (0), 0 states 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 08:57:36,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 901 transitions. [2021-11-09 08:57:36,428 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 901 transitions. Word has length 133 [2021-11-09 08:57:36,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:36,428 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 901 transitions. [2021-11-09 08:57:36,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 08:57:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 901 transitions. [2021-11-09 08:57:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-09 08:57:36,430 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:36,430 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:36,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-09 08:57:36,430 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:57:36,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:36,431 INFO L85 PathProgramCache]: Analyzing trace with hash -955338542, now seen corresponding path program 1 times [2021-11-09 08:57:36,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:36,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670251272] [2021-11-09 08:57:36,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:36,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:37,932 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 08:57:37,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:37,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670251272] [2021-11-09 08:57:37,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670251272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:37,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:37,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:57:37,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794760139] [2021-11-09 08:57:37,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:57:37,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:37,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:57:37,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:57:37,935 INFO L87 Difference]: Start difference. First operand 825 states and 901 transitions. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 08:57:46,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:46,900 INFO L93 Difference]: Finished difference Result 1222 states and 1342 transitions. [2021-11-09 08:57:46,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:57:46,901 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-09 08:57:46,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:46,902 INFO L225 Difference]: With dead ends: 1222 [2021-11-09 08:57:46,902 INFO L226 Difference]: Without dead ends: 1085 [2021-11-09 08:57:46,903 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:57:46,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2021-11-09 08:57:46,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 867. [2021-11-09 08:57:46,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 849 states have (on average 1.1177856301531213) internal successors, (949), 866 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 08:57:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 949 transitions. [2021-11-09 08:57:46,979 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 949 transitions. Word has length 133 [2021-11-09 08:57:46,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:46,982 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 949 transitions. [2021-11-09 08:57:46,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 08:57:46,983 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 949 transitions. [2021-11-09 08:57:46,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-09 08:57:46,985 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:46,985 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:46,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-09 08:57:46,985 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:57:46,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:46,986 INFO L85 PathProgramCache]: Analyzing trace with hash 967889492, now seen corresponding path program 1 times [2021-11-09 08:57:46,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:46,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191057123] [2021-11-09 08:57:46,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:46,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:49,173 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 08:57:49,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:49,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191057123] [2021-11-09 08:57:49,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191057123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:49,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:49,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:57:49,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412973842] [2021-11-09 08:57:49,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:57:49,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:49,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:57:49,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:57:49,175 INFO L87 Difference]: Start difference. First operand 867 states and 949 transitions. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 08:57:54,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:54,829 INFO L93 Difference]: Finished difference Result 1448 states and 1586 transitions. [2021-11-09 08:57:54,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:57:54,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-09 08:57:54,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:54,831 INFO L225 Difference]: With dead ends: 1448 [2021-11-09 08:57:54,831 INFO L226 Difference]: Without dead ends: 1143 [2021-11-09 08:57:54,832 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:57:54,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2021-11-09 08:57:54,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 863. [2021-11-09 08:57:54,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 845 states have (on average 1.1136094674556214) internal successors, (941), 862 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:54,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 941 transitions. [2021-11-09 08:57:54,890 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 941 transitions. Word has length 133 [2021-11-09 08:57:54,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:54,891 INFO L470 AbstractCegarLoop]: Abstraction has 863 states and 941 transitions. [2021-11-09 08:57:54,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 08:57:54,891 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 941 transitions. [2021-11-09 08:57:54,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-09 08:57:54,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:54,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:54,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-09 08:57:54,892 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 08:57:54,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:54,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2140527014, now seen corresponding path program 1 times [2021-11-09 08:57:54,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:54,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589277576] [2021-11-09 08:57:54,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:54,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:02,736 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 08:58:02,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:02,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589277576] [2021-11-09 08:58:02,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589277576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:02,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:02,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-09 08:58:02,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512777025] [2021-11-09 08:58:02,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 08:58:02,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:02,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 08:58:02,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-11-09 08:58:02,738 INFO L87 Difference]: Start difference. First operand 863 states and 941 transitions. Second operand has 20 states, 20 states have (on average 6.65) internal successors, (133), 20 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)