./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-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 22:33:39,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 22:33:39,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 22:33:39,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 22:33:39,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 22:33:39,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 22:33:39,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 22:33:39,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 22:33:39,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 22:33:39,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 22:33:39,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 22:33:39,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 22:33:39,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 22:33:39,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 22:33:39,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 22:33:39,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 22:33:39,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 22:33:39,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 22:33:39,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 22:33:39,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 22:33:39,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 22:33:39,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 22:33:39,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 22:33:39,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 22:33:40,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 22:33:40,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 22:33:40,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 22:33:40,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 22:33:40,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 22:33:40,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 22:33:40,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 22:33:40,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 22:33:40,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 22:33:40,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 22:33:40,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 22:33:40,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 22:33:40,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 22:33:40,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 22:33:40,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 22:33:40,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 22:33:40,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 22:33:40,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 22:33:40,051 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 22:33:40,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 22:33:40,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 22:33:40,052 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 22:33:40,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 22:33:40,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 22:33:40,057 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 22:33:40,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 22:33:40,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 22:33:40,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 22:33:40,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 22:33:40,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 22:33:40,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 22:33:40,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 22:33:40,059 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 22:33:40,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 22:33:40,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 22:33:40,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 22:33:40,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 22:33:40,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 22:33:40,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 22:33:40,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 22:33:40,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 22:33:40,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 22:33:40,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 22:33:40,062 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 22:33:40,062 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 22:33:40,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 22:33:40,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 22:33:40,063 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb [2021-11-03 22:33:40,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 22:33:40,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 22:33:40,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 22:33:40,346 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 22:33:40,347 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 22:33:40,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-03 22:33:40,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70095f908/51e14df53cdd4fd2a05f1268c27d52fc/FLAGb6089ff0a [2021-11-03 22:33:41,239 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 22:33:41,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-03 22:33:41,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70095f908/51e14df53cdd4fd2a05f1268c27d52fc/FLAGb6089ff0a [2021-11-03 22:33:41,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70095f908/51e14df53cdd4fd2a05f1268c27d52fc [2021-11-03 22:33:41,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 22:33:41,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 22:33:41,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 22:33:41,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 22:33:41,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 22:33:41,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 10:33:41" (1/1) ... [2021-11-03 22:33:41,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9644540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:41, skipping insertion in model container [2021-11-03 22:33:41,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 10:33:41" (1/1) ... [2021-11-03 22:33:41,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 22:33:41,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 22:33:42,188 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2021-11-03 22:33:42,195 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2021-11-03 22:33:42,223 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 22:33:42,230 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 22:33:43,136 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:43,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:43,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:43,138 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:43,138 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:43,150 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:43,154 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:43,156 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:43,157 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:43,446 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 22:33:43,447 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 22:33:43,448 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 22:33:43,449 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 22:33:43,458 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 22:33:43,461 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 22:33:43,463 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 22:33:43,463 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 22:33:43,464 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 22:33:43,468 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 22:33:43,643 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 22:33:43,813 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:43,816 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:43,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 22:33:43,957 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 22:33:43,979 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2021-11-03 22:33:43,981 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2021-11-03 22:33:43,983 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 22:33:43,983 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 22:33:44,014 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:44,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:44,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:44,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:44,016 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:44,023 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:44,024 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:44,024 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:44,025 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:44,061 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 22:33:44,062 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 22:33:44,063 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 22:33:44,065 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 22:33:44,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 22:33:44,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 22:33:44,067 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 22:33:44,067 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 22:33:44,068 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 22:33:44,073 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 22:33:44,096 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 22:33:44,182 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:44,183 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:44,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 22:33:44,396 INFO L208 MainTranslator]: Completed translation [2021-11-03 22:33:44,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:44 WrapperNode [2021-11-03 22:33:44,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 22:33:44,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 22:33:44,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 22:33:44,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 22:33:44,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:44" (1/1) ... [2021-11-03 22:33:44,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:44" (1/1) ... [2021-11-03 22:33:44,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 22:33:44,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 22:33:44,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 22:33:44,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 22:33:44,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:44" (1/1) ... [2021-11-03 22:33:44,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:44" (1/1) ... [2021-11-03 22:33:44,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:44" (1/1) ... [2021-11-03 22:33:44,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:44" (1/1) ... [2021-11-03 22:33:44,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:44" (1/1) ... [2021-11-03 22:33:44,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:44" (1/1) ... [2021-11-03 22:33:44,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:44" (1/1) ... [2021-11-03 22:33:44,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 22:33:44,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 22:33:44,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 22:33:44,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 22:33:44,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:44" (1/1) ... [2021-11-03 22:33:44,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 22:33:44,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 22:33:44,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 22:33:44,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 22:33:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 22:33:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 22:33:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 22:33:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 22:33:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 22:33:44,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 22:33:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 22:33:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 22:33:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 22:33:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 22:33:44,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 22:33:50,991 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 22:33:50,992 INFO L299 CfgBuilder]: Removed 151 assume(true) statements. [2021-11-03 22:33:50,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 10:33:50 BoogieIcfgContainer [2021-11-03 22:33:51,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 22:33:51,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 22:33:51,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 22:33:51,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 22:33:51,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 10:33:41" (1/3) ... [2021-11-03 22:33:51,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c02856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 10:33:51, skipping insertion in model container [2021-11-03 22:33:51,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:44" (2/3) ... [2021-11-03 22:33:51,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c02856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 10:33:51, skipping insertion in model container [2021-11-03 22:33:51,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 10:33:50" (3/3) ... [2021-11-03 22:33:51,013 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-03 22:33:51,021 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 22:33:51,022 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-03 22:33:51,088 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 22:33:51,096 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 [2021-11-03 22:33:51,097 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-03 22:33:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 297 states, 277 states have (on average 1.4873646209386282) internal successors, (412), 296 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:33:51,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 22:33:51,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:51,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:33:51,134 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)] === [2021-11-03 22:33:51,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash 28296255, now seen corresponding path program 1 times [2021-11-03 22:33:51,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:51,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119535407] [2021-11-03 22:33:51,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:51,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:51,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:51,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119535407] [2021-11-03 22:33:51,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119535407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:51,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:51,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 22:33:51,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928038465] [2021-11-03 22:33:51,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:51,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 22:33:51,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:51,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 22:33:51,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 22:33:51,982 INFO L87 Difference]: Start difference. First operand has 297 states, 277 states have (on average 1.4873646209386282) internal successors, (412), 296 states have internal predecessors, (412), 0 states have call successors, (0), 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 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:33:54,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:33:56,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:56,212 INFO L93 Difference]: Finished difference Result 586 states and 815 transitions. [2021-11-03 22:33:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 22:33:56,214 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-03 22:33:56,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:56,223 INFO L225 Difference]: With dead ends: 586 [2021-11-03 22:33:56,223 INFO L226 Difference]: Without dead ends: 290 [2021-11-03 22:33:56,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 22:33:56,230 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3704.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4119.65ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:56,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 376 Unknown, 0 Unchecked, 7.94ms Time], IncrementalHoareTripleChecker [0 Valid, 375 Invalid, 1 Unknown, 0 Unchecked, 4119.65ms Time] [2021-11-03 22:33:56,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-03 22:33:56,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-03 22:33:56,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 271 states have (on average 1.3505535055350553) internal successors, (366), 289 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:33:56,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 366 transitions. [2021-11-03 22:33:56,277 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 366 transitions. Word has length 64 [2021-11-03 22:33:56,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:56,277 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 366 transitions. [2021-11-03 22:33:56,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:33:56,278 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 366 transitions. [2021-11-03 22:33:56,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 22:33:56,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:56,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:33:56,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 22:33:56,281 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)] === [2021-11-03 22:33:56,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:56,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1015264321, now seen corresponding path program 1 times [2021-11-03 22:33:56,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:56,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351920692] [2021-11-03 22:33:56,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:56,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:56,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:56,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:56,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351920692] [2021-11-03 22:33:56,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351920692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:56,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:56,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:33:56,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488356723] [2021-11-03 22:33:56,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:56,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:33:56,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:56,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:33:56,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:33:56,742 INFO L87 Difference]: Start difference. First operand 290 states and 366 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:33:58,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:34:01,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:01,201 INFO L93 Difference]: Finished difference Result 550 states and 694 transitions. [2021-11-03 22:34:01,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 22:34:01,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-03 22:34:01,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:01,204 INFO L225 Difference]: With dead ends: 550 [2021-11-03 22:34:01,204 INFO L226 Difference]: Without dead ends: 290 [2021-11-03 22:34:01,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.72ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:34:01,207 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 504 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4024.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.43ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4379.07ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:01,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 0 Invalid, 570 Unknown, 0 Unchecked, 18.43ms Time], IncrementalHoareTripleChecker [10 Valid, 559 Invalid, 1 Unknown, 0 Unchecked, 4379.07ms Time] [2021-11-03 22:34:01,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-03 22:34:01,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-03 22:34:01,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 271 states have (on average 1.3394833948339484) internal successors, (363), 289 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:01,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 363 transitions. [2021-11-03 22:34:01,222 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 363 transitions. Word has length 64 [2021-11-03 22:34:01,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:01,223 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 363 transitions. [2021-11-03 22:34:01,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:01,223 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 363 transitions. [2021-11-03 22:34:01,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 22:34:01,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:01,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:01,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 22:34:01,225 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)] === [2021-11-03 22:34:01,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:01,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2079484297, now seen corresponding path program 1 times [2021-11-03 22:34:01,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:01,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695679693] [2021-11-03 22:34:01,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:01,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:01,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:01,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:01,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695679693] [2021-11-03 22:34:01,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695679693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:01,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:01,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:34:01,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345815819] [2021-11-03 22:34:01,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:01,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:34:01,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:01,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:34:01,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:34:01,546 INFO L87 Difference]: Start difference. First operand 290 states and 363 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:03,646 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:34:08,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:08,852 INFO L93 Difference]: Finished difference Result 757 states and 981 transitions. [2021-11-03 22:34:08,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:34:08,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-03 22:34:08,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:08,855 INFO L225 Difference]: With dead ends: 757 [2021-11-03 22:34:08,855 INFO L226 Difference]: Without dead ends: 488 [2021-11-03 22:34:08,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.96ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:34:08,858 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 280 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6614.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.78ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7161.08ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:08,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 0 Invalid, 1434 Unknown, 0 Unchecked, 20.78ms Time], IncrementalHoareTripleChecker [33 Valid, 1400 Invalid, 1 Unknown, 0 Unchecked, 7161.08ms Time] [2021-11-03 22:34:08,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-03 22:34:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 308. [2021-11-03 22:34:08,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 289 states have (on average 1.3183391003460208) internal successors, (381), 307 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:08,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 381 transitions. [2021-11-03 22:34:08,886 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 381 transitions. Word has length 76 [2021-11-03 22:34:08,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:08,886 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 381 transitions. [2021-11-03 22:34:08,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:08,886 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 381 transitions. [2021-11-03 22:34:08,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 22:34:08,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:08,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:08,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 22:34:08,894 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)] === [2021-11-03 22:34:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:08,895 INFO L85 PathProgramCache]: Analyzing trace with hash -818567047, now seen corresponding path program 1 times [2021-11-03 22:34:08,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:08,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318822521] [2021-11-03 22:34:08,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:08,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:09,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:09,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318822521] [2021-11-03 22:34:09,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318822521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:09,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:09,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:34:09,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412936637] [2021-11-03 22:34:09,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:09,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:34:09,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:09,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:34:09,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:34:09,172 INFO L87 Difference]: Start difference. First operand 308 states and 381 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:11,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:34:15,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:15,562 INFO L93 Difference]: Finished difference Result 675 states and 850 transitions. [2021-11-03 22:34:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:34:15,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-03 22:34:15,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:15,565 INFO L225 Difference]: With dead ends: 675 [2021-11-03 22:34:15,565 INFO L226 Difference]: Without dead ends: 398 [2021-11-03 22:34:15,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.72ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:34:15,570 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 207 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5838.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.84ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6270.36ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:15,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 0 Invalid, 1147 Unknown, 0 Unchecked, 13.84ms Time], IncrementalHoareTripleChecker [33 Valid, 1113 Invalid, 1 Unknown, 0 Unchecked, 6270.36ms Time] [2021-11-03 22:34:15,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-03 22:34:15,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 326. [2021-11-03 22:34:15,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.299674267100977) internal successors, (399), 325 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 399 transitions. [2021-11-03 22:34:15,584 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 399 transitions. Word has length 76 [2021-11-03 22:34:15,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:15,585 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 399 transitions. [2021-11-03 22:34:15,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:15,585 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 399 transitions. [2021-11-03 22:34:15,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 22:34:15,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:15,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:15,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 22:34:15,587 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)] === [2021-11-03 22:34:15,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:15,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1654783221, now seen corresponding path program 1 times [2021-11-03 22:34:15,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:15,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081300450] [2021-11-03 22:34:15,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:15,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:15,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:15,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081300450] [2021-11-03 22:34:15,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081300450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:15,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:15,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:34:15,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716472078] [2021-11-03 22:34:15,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:15,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:34:15,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:15,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:34:15,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:34:15,992 INFO L87 Difference]: Start difference. First operand 326 states and 399 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:18,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:34:20,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:20,502 INFO L93 Difference]: Finished difference Result 586 states and 717 transitions. [2021-11-03 22:34:20,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 22:34:20,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-03 22:34:20,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:20,505 INFO L225 Difference]: With dead ends: 586 [2021-11-03 22:34:20,505 INFO L226 Difference]: Without dead ends: 326 [2021-11-03 22:34:20,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.57ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:34:20,507 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 480 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4077.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.55ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4419.25ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:20,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 0 Invalid, 568 Unknown, 0 Unchecked, 8.55ms Time], IncrementalHoareTripleChecker [9 Valid, 558 Invalid, 1 Unknown, 0 Unchecked, 4419.25ms Time] [2021-11-03 22:34:20,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-03 22:34:20,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-03 22:34:20,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.293159609120521) internal successors, (397), 325 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2021-11-03 22:34:20,517 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 76 [2021-11-03 22:34:20,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:20,517 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2021-11-03 22:34:20,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:20,518 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2021-11-03 22:34:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 22:34:20,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:20,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:20,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 22:34:20,519 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)] === [2021-11-03 22:34:20,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:20,520 INFO L85 PathProgramCache]: Analyzing trace with hash 865605514, now seen corresponding path program 1 times [2021-11-03 22:34:20,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:20,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292678163] [2021-11-03 22:34:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:20,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:21,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:21,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292678163] [2021-11-03 22:34:21,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292678163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:21,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:21,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:34:21,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446744499] [2021-11-03 22:34:21,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:21,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:34:21,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:21,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:34:21,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:34:21,119 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:23,191 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:34:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:26,089 INFO L93 Difference]: Finished difference Result 513 states and 619 transitions. [2021-11-03 22:34:26,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:34:26,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 22:34:26,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:26,092 INFO L225 Difference]: With dead ends: 513 [2021-11-03 22:34:26,092 INFO L226 Difference]: Without dead ends: 326 [2021-11-03 22:34:26,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 316.76ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:34:26,094 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1115 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4373.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.80ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4743.75ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:26,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1115 Valid, 0 Invalid, 650 Unknown, 0 Unchecked, 14.80ms Time], IncrementalHoareTripleChecker [11 Valid, 638 Invalid, 1 Unknown, 0 Unchecked, 4743.75ms Time] [2021-11-03 22:34:26,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-03 22:34:26,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-03 22:34:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.289902280130293) internal successors, (396), 325 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:26,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2021-11-03 22:34:26,108 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 82 [2021-11-03 22:34:26,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:26,108 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2021-11-03 22:34:26,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:26,109 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2021-11-03 22:34:26,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 22:34:26,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:26,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:26,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 22:34:26,111 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)] === [2021-11-03 22:34:26,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:26,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1668683435, now seen corresponding path program 1 times [2021-11-03 22:34:26,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:26,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853803275] [2021-11-03 22:34:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:26,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:26,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:26,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853803275] [2021-11-03 22:34:26,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853803275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:26,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:26,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:34:26,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834305289] [2021-11-03 22:34:26,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:26,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:34:26,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:26,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:34:26,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:34:26,789 INFO L87 Difference]: Start difference. First operand 326 states and 396 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:28,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:34:32,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:32,154 INFO L93 Difference]: Finished difference Result 460 states and 548 transitions. [2021-11-03 22:34:32,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:34:32,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-03 22:34:32,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:32,156 INFO L225 Difference]: With dead ends: 460 [2021-11-03 22:34:32,156 INFO L226 Difference]: Without dead ends: 326 [2021-11-03 22:34:32,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 483.05ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:34:32,158 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1320 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4642.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.05ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5032.39ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:32,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1320 Valid, 0 Invalid, 778 Unknown, 0 Unchecked, 15.05ms Time], IncrementalHoareTripleChecker [12 Valid, 765 Invalid, 1 Unknown, 0 Unchecked, 5032.39ms Time] [2021-11-03 22:34:32,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-03 22:34:32,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-03 22:34:32,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.283387622149837) internal successors, (394), 325 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:32,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 394 transitions. [2021-11-03 22:34:32,166 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 394 transitions. Word has length 88 [2021-11-03 22:34:32,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:32,166 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 394 transitions. [2021-11-03 22:34:32,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:32,167 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 394 transitions. [2021-11-03 22:34:32,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 22:34:32,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:32,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:32,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 22:34:32,168 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)] === [2021-11-03 22:34:32,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:32,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1980195350, now seen corresponding path program 1 times [2021-11-03 22:34:32,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:32,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619684555] [2021-11-03 22:34:32,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:32,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:32,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:32,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:32,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619684555] [2021-11-03 22:34:32,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619684555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:32,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:32,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:34:32,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273991202] [2021-11-03 22:34:32,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:32,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:34:32,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:32,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:34:32,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:34:32,485 INFO L87 Difference]: Start difference. First operand 326 states and 394 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:34,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:34:37,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:37,919 INFO L93 Difference]: Finished difference Result 534 states and 641 transitions. [2021-11-03 22:34:37,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 22:34:37,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-03 22:34:37,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:37,921 INFO L225 Difference]: With dead ends: 534 [2021-11-03 22:34:37,921 INFO L226 Difference]: Without dead ends: 326 [2021-11-03 22:34:37,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.26ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:34:37,922 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 129 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4910.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.75ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5374.79ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:37,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 0 Invalid, 844 Unknown, 0 Unchecked, 6.75ms Time], IncrementalHoareTripleChecker [4 Valid, 839 Invalid, 1 Unknown, 0 Unchecked, 5374.79ms Time] [2021-11-03 22:34:37,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-03 22:34:37,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-03 22:34:37,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.280130293159609) internal successors, (393), 325 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 393 transitions. [2021-11-03 22:34:37,930 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 393 transitions. Word has length 94 [2021-11-03 22:34:37,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:37,931 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 393 transitions. [2021-11-03 22:34:37,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:37,931 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 393 transitions. [2021-11-03 22:34:37,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 22:34:37,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:37,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:37,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 22:34:37,933 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)] === [2021-11-03 22:34:37,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:37,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1700306559, now seen corresponding path program 1 times [2021-11-03 22:34:37,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:37,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020655530] [2021-11-03 22:34:37,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:37,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:38,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:38,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020655530] [2021-11-03 22:34:38,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020655530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:38,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:38,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:34:38,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975334420] [2021-11-03 22:34:38,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:38,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:34:38,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:38,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:34:38,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:34:38,591 INFO L87 Difference]: Start difference. First operand 326 states and 393 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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) [2021-11-03 22:34:40,648 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:34:46,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:46,807 INFO L93 Difference]: Finished difference Result 536 states and 627 transitions. [2021-11-03 22:34:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:34:46,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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 [2021-11-03 22:34:46,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:46,809 INFO L225 Difference]: With dead ends: 536 [2021-11-03 22:34:46,809 INFO L226 Difference]: Without dead ends: 528 [2021-11-03 22:34:46,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 329.01ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:34:46,810 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 383 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 66 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7393.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.35ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7924.75ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:46,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 0 Invalid, 1677 Unknown, 0 Unchecked, 13.35ms Time], IncrementalHoareTripleChecker [66 Valid, 1610 Invalid, 1 Unknown, 0 Unchecked, 7924.75ms Time] [2021-11-03 22:34:46,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-03 22:34:46,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 342. [2021-11-03 22:34:46,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 323 states have (on average 1.2662538699690402) internal successors, (409), 341 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:46,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 409 transitions. [2021-11-03 22:34:46,821 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 409 transitions. Word has length 100 [2021-11-03 22:34:46,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:46,821 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 409 transitions. [2021-11-03 22:34:46,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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) [2021-11-03 22:34:46,822 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 409 transitions. [2021-11-03 22:34:46,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 22:34:46,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:46,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:46,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 22:34:46,824 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)] === [2021-11-03 22:34:46,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash -989785033, now seen corresponding path program 1 times [2021-11-03 22:34:46,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:46,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082609607] [2021-11-03 22:34:46,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:46,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:47,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:47,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082609607] [2021-11-03 22:34:47,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082609607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:47,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:47,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:34:47,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191598521] [2021-11-03 22:34:47,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:47,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:34:47,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:47,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:34:47,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:34:47,198 INFO L87 Difference]: Start difference. First operand 342 states and 409 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) [2021-11-03 22:34:49,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:34:54,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:54,382 INFO L93 Difference]: Finished difference Result 957 states and 1143 transitions. [2021-11-03 22:34:54,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:34:54,382 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 [2021-11-03 22:34:54,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:54,385 INFO L225 Difference]: With dead ends: 957 [2021-11-03 22:34:54,385 INFO L226 Difference]: Without dead ends: 643 [2021-11-03 22:34:54,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 152.22ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:34:54,387 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 561 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6531.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.94ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7003.07ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:54,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 0 Invalid, 1421 Unknown, 0 Unchecked, 15.94ms Time], IncrementalHoareTripleChecker [42 Valid, 1378 Invalid, 1 Unknown, 0 Unchecked, 7003.07ms Time] [2021-11-03 22:34:54,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-11-03 22:34:54,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 369. [2021-11-03 22:34:54,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 350 states have (on average 1.2457142857142858) internal successors, (436), 368 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:54,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 436 transitions. [2021-11-03 22:34:54,399 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 436 transitions. Word has length 104 [2021-11-03 22:34:54,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:54,399 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 436 transitions. [2021-11-03 22:34:54,399 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) [2021-11-03 22:34:54,400 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 436 transitions. [2021-11-03 22:34:54,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 22:34:54,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:54,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:54,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 22:34:54,401 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)] === [2021-11-03 22:34:54,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:54,402 INFO L85 PathProgramCache]: Analyzing trace with hash -309726663, now seen corresponding path program 1 times [2021-11-03 22:34:54,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:54,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822138632] [2021-11-03 22:34:54,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:54,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:55,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:55,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822138632] [2021-11-03 22:34:55,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822138632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:55,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:55,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 22:34:55,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441305206] [2021-11-03 22:34:55,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:55,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 22:34:55,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:55,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 22:34:55,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:34:55,856 INFO L87 Difference]: Start difference. First operand 369 states and 436 transitions. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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) [2021-11-03 22:34:57,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:35:19,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:35:19,558 INFO L93 Difference]: Finished difference Result 1207 states and 1434 transitions. [2021-11-03 22:35:19,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-03 22:35:19,559 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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 [2021-11-03 22:35:19,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:35:19,562 INFO L225 Difference]: With dead ends: 1207 [2021-11-03 22:35:19,562 INFO L226 Difference]: Without dead ends: 999 [2021-11-03 22:35:19,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 5120.31ms TimeCoverageRelationStatistics Valid=262, Invalid=928, Unknown=0, NotChecked=0, Total=1190 [2021-11-03 22:35:19,564 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1672 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 5041 mSolverCounterSat, 102 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17975.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.84ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 5041 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19012.96ms IncrementalHoareTripleChecker+Time [2021-11-03 22:35:19,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1672 Valid, 0 Invalid, 5144 Unknown, 0 Unchecked, 50.84ms Time], IncrementalHoareTripleChecker [102 Valid, 5041 Invalid, 1 Unknown, 0 Unchecked, 19012.96ms Time] [2021-11-03 22:35:19,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2021-11-03 22:35:19,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 400. [2021-11-03 22:35:19,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 381 states have (on average 1.2440944881889764) internal successors, (474), 399 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:19,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 474 transitions. [2021-11-03 22:35:19,580 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 474 transitions. Word has length 104 [2021-11-03 22:35:19,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:35:19,580 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 474 transitions. [2021-11-03 22:35:19,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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) [2021-11-03 22:35:19,581 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 474 transitions. [2021-11-03 22:35:19,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 22:35:19,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:35:19,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:35:19,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 22:35:19,583 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)] === [2021-11-03 22:35:19,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:35:19,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1898074565, now seen corresponding path program 1 times [2021-11-03 22:35:19,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:35:19,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763017310] [2021-11-03 22:35:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:35:19,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:35:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:35:23,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:35:23,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:35:23,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763017310] [2021-11-03 22:35:23,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763017310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:35:23,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:35:23,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:35:23,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024779789] [2021-11-03 22:35:23,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:35:23,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:35:23,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:35:23,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:35:23,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:35:23,774 INFO L87 Difference]: Start difference. First operand 400 states and 474 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) [2021-11-03 22:35:25,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:35:34,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:35:34,697 INFO L93 Difference]: Finished difference Result 820 states and 975 transitions. [2021-11-03 22:35:34,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 22:35:34,698 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 [2021-11-03 22:35:34,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:35:34,699 INFO L225 Difference]: With dead ends: 820 [2021-11-03 22:35:34,700 INFO L226 Difference]: Without dead ends: 456 [2021-11-03 22:35:34,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 731.20ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:35:34,701 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 555 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9752.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.13ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10375.99ms IncrementalHoareTripleChecker+Time [2021-11-03 22:35:34,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 0 Invalid, 2291 Unknown, 0 Unchecked, 21.13ms Time], IncrementalHoareTripleChecker [26 Valid, 2264 Invalid, 1 Unknown, 0 Unchecked, 10375.99ms Time] [2021-11-03 22:35:34,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-03 22:35:34,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 398. [2021-11-03 22:35:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 379 states have (on average 1.2427440633245384) internal successors, (471), 397 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 471 transitions. [2021-11-03 22:35:34,713 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 471 transitions. Word has length 104 [2021-11-03 22:35:34,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:35:34,713 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 471 transitions. [2021-11-03 22:35:34,713 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) [2021-11-03 22:35:34,713 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 471 transitions. [2021-11-03 22:35:34,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 22:35:34,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:35:34,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:35:34,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 22:35:34,715 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)] === [2021-11-03 22:35:34,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:35:34,715 INFO L85 PathProgramCache]: Analyzing trace with hash -548921, now seen corresponding path program 1 times [2021-11-03 22:35:34,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:35:34,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559344750] [2021-11-03 22:35:34,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:35:34,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:35:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:35:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:35:38,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:35:38,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559344750] [2021-11-03 22:35:38,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559344750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:35:38,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:35:38,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-03 22:35:38,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902282448] [2021-11-03 22:35:38,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:35:38,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-03 22:35:38,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:35:38,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-03 22:35:38,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-11-03 22:35:38,248 INFO L87 Difference]: Start difference. First operand 398 states and 471 transitions. Second operand has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:40,341 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:36:31,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:36:31,333 INFO L93 Difference]: Finished difference Result 1390 states and 1668 transitions. [2021-11-03 22:36:31,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-11-03 22:36:31,334 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-03 22:36:31,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:36:31,337 INFO L225 Difference]: With dead ends: 1390 [2021-11-03 22:36:31,337 INFO L226 Difference]: Without dead ends: 1087 [2021-11-03 22:36:31,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1698 ImplicationChecksByTransitivity, 8832.97ms TimeCoverageRelationStatistics Valid=1060, Invalid=4640, Unknown=0, NotChecked=0, Total=5700 [2021-11-03 22:36:31,340 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1427 mSDsluCounter, 8400 mSDsCounter, 0 mSdLazyCounter, 13101 mSolverCounterSat, 99 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43015.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 129.05ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 13101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45224.43ms IncrementalHoareTripleChecker+Time [2021-11-03 22:36:31,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1427 Valid, 0 Invalid, 13201 Unknown, 0 Unchecked, 129.05ms Time], IncrementalHoareTripleChecker [99 Valid, 13101 Invalid, 1 Unknown, 0 Unchecked, 45224.43ms Time] [2021-11-03 22:36:31,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2021-11-03 22:36:31,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 495. [2021-11-03 22:36:31,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 476 states have (on average 1.2373949579831933) internal successors, (589), 494 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 589 transitions. [2021-11-03 22:36:31,359 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 589 transitions. Word has length 108 [2021-11-03 22:36:31,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:36:31,360 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 589 transitions. [2021-11-03 22:36:31,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:31,360 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 589 transitions. [2021-11-03 22:36:31,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 22:36:31,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:36:31,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:36:31,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 22:36:31,362 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)] === [2021-11-03 22:36:31,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:36:31,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1959123707, now seen corresponding path program 1 times [2021-11-03 22:36:31,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:36:31,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582416676] [2021-11-03 22:36:31,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:36:31,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:36:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:36:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:36:32,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:36:32,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582416676] [2021-11-03 22:36:32,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582416676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:36:32,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:36:32,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:36:32,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841128781] [2021-11-03 22:36:32,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:36:32,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:36:32,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:36:32,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:36:32,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:36:32,443 INFO L87 Difference]: Start difference. First operand 495 states and 589 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:34,534 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:36:42,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:36:42,940 INFO L93 Difference]: Finished difference Result 998 states and 1165 transitions. [2021-11-03 22:36:42,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 22:36:42,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-03 22:36:42,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:36:42,942 INFO L225 Difference]: With dead ends: 998 [2021-11-03 22:36:42,943 INFO L226 Difference]: Without dead ends: 508 [2021-11-03 22:36:42,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 298.15ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:36:42,944 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 195 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 58 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9646.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.58ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10272.83ms IncrementalHoareTripleChecker+Time [2021-11-03 22:36:42,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 0 Invalid, 2651 Unknown, 0 Unchecked, 17.58ms Time], IncrementalHoareTripleChecker [58 Valid, 2592 Invalid, 1 Unknown, 0 Unchecked, 10272.83ms Time] [2021-11-03 22:36:42,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-03 22:36:42,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 398. [2021-11-03 22:36:42,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 379 states have (on average 1.2242744063324538) internal successors, (464), 397 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 464 transitions. [2021-11-03 22:36:42,959 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 464 transitions. Word has length 108 [2021-11-03 22:36:42,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:36:42,959 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 464 transitions. [2021-11-03 22:36:42,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:42,960 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 464 transitions. [2021-11-03 22:36:42,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 22:36:42,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:36:42,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:36:42,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 22:36:42,961 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)] === [2021-11-03 22:36:42,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:36:42,962 INFO L85 PathProgramCache]: Analyzing trace with hash -596589076, now seen corresponding path program 1 times [2021-11-03 22:36:42,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:36:42,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66705338] [2021-11-03 22:36:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:36:42,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:36:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:36:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:36:47,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:36:47,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66705338] [2021-11-03 22:36:47,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66705338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:36:47,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:36:47,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 22:36:47,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867212455] [2021-11-03 22:36:47,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:36:47,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 22:36:47,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:36:47,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 22:36:47,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:36:47,891 INFO L87 Difference]: Start difference. First operand 398 states and 464 transitions. Second operand has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 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) [2021-11-03 22:36:49,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:37:02,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:37:02,457 INFO L93 Difference]: Finished difference Result 1031 states and 1209 transitions. [2021-11-03 22:37:02,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 22:37:02,458 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 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 [2021-11-03 22:37:02,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:37:02,460 INFO L225 Difference]: With dead ends: 1031 [2021-11-03 22:37:02,460 INFO L226 Difference]: Without dead ends: 724 [2021-11-03 22:37:02,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2008.26ms TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2021-11-03 22:37:02,461 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1055 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 3470 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12522.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.66ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3470 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13295.28ms IncrementalHoareTripleChecker+Time [2021-11-03 22:37:02,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1055 Valid, 0 Invalid, 3525 Unknown, 0 Unchecked, 33.66ms Time], IncrementalHoareTripleChecker [54 Valid, 3470 Invalid, 1 Unknown, 0 Unchecked, 13295.28ms Time] [2021-11-03 22:37:02,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-11-03 22:37:02,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 449. [2021-11-03 22:37:02,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 430 states have (on average 1.2186046511627906) internal successors, (524), 448 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:37:02,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 524 transitions. [2021-11-03 22:37:02,476 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 524 transitions. Word has length 110 [2021-11-03 22:37:02,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:37:02,476 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 524 transitions. [2021-11-03 22:37:02,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 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) [2021-11-03 22:37:02,476 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 524 transitions. [2021-11-03 22:37:02,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 22:37:02,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:37:02,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:37:02,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 22:37:02,478 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)] === [2021-11-03 22:37:02,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:37:02,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1232808230, now seen corresponding path program 1 times [2021-11-03 22:37:02,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:37:02,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611524178] [2021-11-03 22:37:02,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:37:02,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:37:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:37:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:37:02,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:37:02,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611524178] [2021-11-03 22:37:02,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611524178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:37:02,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:37:02,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:37:02,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758575322] [2021-11-03 22:37:02,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:37:02,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:37:02,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:37:02,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:37:02,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:37:02,714 INFO L87 Difference]: Start difference. First operand 449 states and 524 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 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) [2021-11-03 22:37:05,269 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:37:09,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:37:09,118 INFO L93 Difference]: Finished difference Result 857 states and 997 transitions. [2021-11-03 22:37:09,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:37:09,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 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 [2021-11-03 22:37:09,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:37:09,120 INFO L225 Difference]: With dead ends: 857 [2021-11-03 22:37:09,120 INFO L226 Difference]: Without dead ends: 406 [2021-11-03 22:37:09,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:37:09,121 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5939.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.00ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6326.42ms IncrementalHoareTripleChecker+Time [2021-11-03 22:37:09,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 1095 Unknown, 0 Unchecked, 7.00ms Time], IncrementalHoareTripleChecker [28 Valid, 1066 Invalid, 1 Unknown, 0 Unchecked, 6326.42ms Time] [2021-11-03 22:37:09,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-11-03 22:37:09,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 382. [2021-11-03 22:37:09,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 363 states have (on average 1.184573002754821) internal successors, (430), 381 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:37:09,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 430 transitions. [2021-11-03 22:37:09,135 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 430 transitions. Word has length 110 [2021-11-03 22:37:09,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:37:09,135 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 430 transitions. [2021-11-03 22:37:09,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 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) [2021-11-03 22:37:09,136 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 430 transitions. [2021-11-03 22:37:09,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 22:37:09,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:37:09,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:37:09,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 22:37:09,137 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)] === [2021-11-03 22:37:09,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:37:09,138 INFO L85 PathProgramCache]: Analyzing trace with hash -666588708, now seen corresponding path program 1 times [2021-11-03 22:37:09,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:37:09,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142012300] [2021-11-03 22:37:09,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:37:09,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:37:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:37:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:37:09,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:37:09,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142012300] [2021-11-03 22:37:09,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142012300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:37:09,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:37:09,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:37:09,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743423982] [2021-11-03 22:37:09,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:37:09,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:37:09,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:37:09,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:37:09,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:37:09,788 INFO L87 Difference]: Start difference. First operand 382 states and 430 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:37:12,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:37:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:37:24,989 INFO L93 Difference]: Finished difference Result 1132 states and 1259 transitions. [2021-11-03 22:37:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 22:37:24,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 22:37:24,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:37:24,992 INFO L225 Difference]: With dead ends: 1132 [2021-11-03 22:37:24,992 INFO L226 Difference]: Without dead ends: 827 [2021-11-03 22:37:24,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1346.35ms TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:37:24,994 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 758 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 3404 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13173.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.64ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3404 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13966.89ms IncrementalHoareTripleChecker+Time [2021-11-03 22:37:24,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 0 Invalid, 3439 Unknown, 0 Unchecked, 31.64ms Time], IncrementalHoareTripleChecker [34 Valid, 3404 Invalid, 1 Unknown, 0 Unchecked, 13966.89ms Time] [2021-11-03 22:37:24,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-11-03 22:37:25,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 390. [2021-11-03 22:37:25,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 371 states have (on average 1.1832884097035041) internal successors, (439), 389 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:37:25,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 439 transitions. [2021-11-03 22:37:25,007 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 439 transitions. Word has length 113 [2021-11-03 22:37:25,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:37:25,008 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 439 transitions. [2021-11-03 22:37:25,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:37:25,008 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 439 transitions. [2021-11-03 22:37:25,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 22:37:25,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:37:25,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:37:25,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 22:37:25,010 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)] === [2021-11-03 22:37:25,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:37:25,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1276333328, now seen corresponding path program 1 times [2021-11-03 22:37:25,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:37:25,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157739304] [2021-11-03 22:37:25,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:37:25,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:37:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:37:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:37:25,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:37:25,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157739304] [2021-11-03 22:37:25,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157739304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:37:25,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:37:25,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 22:37:25,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377712197] [2021-11-03 22:37:25,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:37:25,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 22:37:25,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:37:25,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 22:37:25,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:37:25,932 INFO L87 Difference]: Start difference. First operand 390 states and 439 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:37:27,973 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:37:40,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:37:40,655 INFO L93 Difference]: Finished difference Result 1270 states and 1431 transitions. [2021-11-03 22:37:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 22:37:40,655 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 22:37:40,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:37:40,658 INFO L225 Difference]: With dead ends: 1270 [2021-11-03 22:37:40,658 INFO L226 Difference]: Without dead ends: 960 [2021-11-03 22:37:40,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1305.71ms TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2021-11-03 22:37:40,659 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2101 mSDsluCounter, 2292 mSDsCounter, 0 mSdLazyCounter, 3658 mSolverCounterSat, 79 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12847.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2101 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.16ms SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 3658 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13619.15ms IncrementalHoareTripleChecker+Time [2021-11-03 22:37:40,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2101 Valid, 0 Invalid, 3738 Unknown, 0 Unchecked, 37.16ms Time], IncrementalHoareTripleChecker [79 Valid, 3658 Invalid, 1 Unknown, 0 Unchecked, 13619.15ms Time] [2021-11-03 22:37:40,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-11-03 22:37:40,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 436. [2021-11-03 22:37:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 417 states have (on average 1.170263788968825) internal successors, (488), 435 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:37:40,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 488 transitions. [2021-11-03 22:37:40,674 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 488 transitions. Word has length 113 [2021-11-03 22:37:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:37:40,674 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 488 transitions. [2021-11-03 22:37:40,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:37:40,675 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 488 transitions. [2021-11-03 22:37:40,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 22:37:40,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:37:40,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:37:40,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 22:37:40,677 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)] === [2021-11-03 22:37:40,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:37:40,677 INFO L85 PathProgramCache]: Analyzing trace with hash 281639630, now seen corresponding path program 1 times [2021-11-03 22:37:40,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:37:40,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036293915] [2021-11-03 22:37:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:37:40,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:37:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:37:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:37:43,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:37:43,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036293915] [2021-11-03 22:37:43,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036293915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:37:43,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:37:43,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 22:37:43,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574249049] [2021-11-03 22:37:43,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:37:43,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 22:37:43,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:37:43,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 22:37:43,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:37:43,376 INFO L87 Difference]: Start difference. First operand 436 states and 488 transitions. Second operand has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:37:45,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:38:16,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:38:16,232 INFO L93 Difference]: Finished difference Result 1245 states and 1384 transitions. [2021-11-03 22:38:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-03 22:38:16,233 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-03 22:38:16,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:38:16,235 INFO L225 Difference]: With dead ends: 1245 [2021-11-03 22:38:16,235 INFO L226 Difference]: Without dead ends: 952 [2021-11-03 22:38:16,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 7272.08ms TimeCoverageRelationStatistics Valid=755, Invalid=2785, Unknown=0, NotChecked=0, Total=3540 [2021-11-03 22:38:16,237 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1720 mSDsluCounter, 4441 mSDsCounter, 0 mSdLazyCounter, 7349 mSolverCounterSat, 108 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25119.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.47ms SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 7349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26481.31ms IncrementalHoareTripleChecker+Time [2021-11-03 22:38:16,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1720 Valid, 0 Invalid, 7458 Unknown, 0 Unchecked, 75.47ms Time], IncrementalHoareTripleChecker [108 Valid, 7349 Invalid, 1 Unknown, 0 Unchecked, 26481.31ms Time] [2021-11-03 22:38:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-11-03 22:38:16,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 482. [2021-11-03 22:38:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 463 states have (on average 1.1598272138228942) internal successors, (537), 481 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:38:16,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 537 transitions. [2021-11-03 22:38:16,256 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 537 transitions. Word has length 113 [2021-11-03 22:38:16,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:38:16,256 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 537 transitions. [2021-11-03 22:38:16,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:38:16,257 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 537 transitions. [2021-11-03 22:38:16,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 22:38:16,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:38:16,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:38:16,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 22:38:16,259 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 22:38:16,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:38:16,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1552771201, now seen corresponding path program 1 times [2021-11-03 22:38:16,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:38:16,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312279614] [2021-11-03 22:38:16,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:38:16,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:38:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:38:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:38:16,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:38:16,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312279614] [2021-11-03 22:38:16,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312279614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:38:16,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:38:16,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:38:16,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219235789] [2021-11-03 22:38:16,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:38:16,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:38:16,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:38:16,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:38:16,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:38:16,815 INFO L87 Difference]: Start difference. First operand 482 states and 537 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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) [2021-11-03 22:38:19,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:38:32,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:38:32,794 INFO L93 Difference]: Finished difference Result 1127 states and 1249 transitions. [2021-11-03 22:38:32,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 22:38:32,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 [2021-11-03 22:38:32,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:38:32,797 INFO L225 Difference]: With dead ends: 1127 [2021-11-03 22:38:32,797 INFO L226 Difference]: Without dead ends: 887 [2021-11-03 22:38:32,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1186.04ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-11-03 22:38:32,799 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 699 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 3802 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14042.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.99ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 3802 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14859.57ms IncrementalHoareTripleChecker+Time [2021-11-03 22:38:32,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [699 Valid, 0 Invalid, 3852 Unknown, 0 Unchecked, 31.99ms Time], IncrementalHoareTripleChecker [49 Valid, 3802 Invalid, 1 Unknown, 0 Unchecked, 14859.57ms Time] [2021-11-03 22:38:32,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-11-03 22:38:32,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 482. [2021-11-03 22:38:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 463 states have (on average 1.1598272138228942) internal successors, (537), 481 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:38:32,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 537 transitions. [2021-11-03 22:38:32,818 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 537 transitions. Word has length 116 [2021-11-03 22:38:32,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:38:32,819 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 537 transitions. [2021-11-03 22:38:32,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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) [2021-11-03 22:38:32,819 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 537 transitions. [2021-11-03 22:38:32,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 22:38:32,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:38:32,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:38:32,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-03 22:38:32,820 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 22:38:32,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:38:32,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1537252483, now seen corresponding path program 1 times [2021-11-03 22:38:32,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:38:32,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605140478] [2021-11-03 22:38:32,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:38:32,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:38:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:38:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:38:37,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:38:37,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605140478] [2021-11-03 22:38:37,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605140478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:38:37,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:38:37,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 22:38:37,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054810876] [2021-11-03 22:38:37,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:38:37,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 22:38:37,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:38:37,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 22:38:37,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:38:37,696 INFO L87 Difference]: Start difference. First operand 482 states and 537 transitions. Second operand has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 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) [2021-11-03 22:38:39,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:38:57,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:38:57,702 INFO L93 Difference]: Finished difference Result 1125 states and 1264 transitions. [2021-11-03 22:38:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 22:38:57,703 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 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 [2021-11-03 22:38:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:38:57,705 INFO L225 Difference]: With dead ends: 1125 [2021-11-03 22:38:57,705 INFO L226 Difference]: Without dead ends: 885 [2021-11-03 22:38:57,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 3054.22ms TimeCoverageRelationStatistics Valid=228, Invalid=642, Unknown=0, NotChecked=0, Total=870 [2021-11-03 22:38:57,706 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1207 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 4667 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16855.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.43ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 4667 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17871.90ms IncrementalHoareTripleChecker+Time [2021-11-03 22:38:57,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 0 Invalid, 4709 Unknown, 0 Unchecked, 49.43ms Time], IncrementalHoareTripleChecker [41 Valid, 4667 Invalid, 1 Unknown, 0 Unchecked, 17871.90ms Time] [2021-11-03 22:38:57,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2021-11-03 22:38:57,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 477. [2021-11-03 22:38:57,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 458 states have (on average 1.1615720524017468) internal successors, (532), 476 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:38:57,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 532 transitions. [2021-11-03 22:38:57,723 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 532 transitions. Word has length 116 [2021-11-03 22:38:57,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:38:57,724 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 532 transitions. [2021-11-03 22:38:57,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 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) [2021-11-03 22:38:57,724 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 532 transitions. [2021-11-03 22:38:57,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-03 22:38:57,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:38:57,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:38:57,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 22:38:57,726 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)] === [2021-11-03 22:38:57,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:38:57,726 INFO L85 PathProgramCache]: Analyzing trace with hash 437438573, now seen corresponding path program 1 times [2021-11-03 22:38:57,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:38:57,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780327606] [2021-11-03 22:38:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:38:57,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:38:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:38:58,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:38:58,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:38:58,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780327606] [2021-11-03 22:38:58,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780327606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:38:58,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:38:58,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:38:58,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95671287] [2021-11-03 22:38:58,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:38:58,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:38:58,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:38:58,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:38:58,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:38:58,154 INFO L87 Difference]: Start difference. First operand 477 states and 532 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 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) [2021-11-03 22:39:00,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:39:06,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:39:06,808 INFO L93 Difference]: Finished difference Result 1184 states and 1320 transitions. [2021-11-03 22:39:06,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:39:06,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 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 [2021-11-03 22:39:06,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:39:06,811 INFO L225 Difference]: With dead ends: 1184 [2021-11-03 22:39:06,811 INFO L226 Difference]: Without dead ends: 835 [2021-11-03 22:39:06,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 338.12ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:39:06,813 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 405 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7874.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.19ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8357.64ms IncrementalHoareTripleChecker+Time [2021-11-03 22:39:06,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 0 Invalid, 2130 Unknown, 0 Unchecked, 14.19ms Time], IncrementalHoareTripleChecker [7 Valid, 2122 Invalid, 1 Unknown, 0 Unchecked, 8357.64ms Time] [2021-11-03 22:39:06,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2021-11-03 22:39:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 481. [2021-11-03 22:39:06,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 462 states have (on average 1.1601731601731602) internal successors, (536), 480 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:39:06,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 536 transitions. [2021-11-03 22:39:06,831 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 536 transitions. Word has length 119 [2021-11-03 22:39:06,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:39:06,831 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 536 transitions. [2021-11-03 22:39:06,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 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) [2021-11-03 22:39:06,832 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 536 transitions. [2021-11-03 22:39:06,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-03 22:39:06,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:39:06,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:39:06,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 22:39:06,833 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)] === [2021-11-03 22:39:06,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:39:06,834 INFO L85 PathProgramCache]: Analyzing trace with hash -778715153, now seen corresponding path program 1 times [2021-11-03 22:39:06,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:39:06,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714988787] [2021-11-03 22:39:06,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:39:06,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:39:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:39:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:39:10,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:39:10,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714988787] [2021-11-03 22:39:10,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714988787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:39:10,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:39:10,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-03 22:39:10,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888844543] [2021-11-03 22:39:10,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:39:10,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-03 22:39:10,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:39:10,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-03 22:39:10,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-11-03 22:39:10,093 INFO L87 Difference]: Start difference. First operand 481 states and 536 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 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) [2021-11-03 22:39:12,142 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:39:59,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:39:59,065 INFO L93 Difference]: Finished difference Result 1596 states and 1768 transitions. [2021-11-03 22:39:59,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-11-03 22:39:59,066 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 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 [2021-11-03 22:39:59,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:39:59,069 INFO L225 Difference]: With dead ends: 1596 [2021-11-03 22:39:59,069 INFO L226 Difference]: Without dead ends: 1303 [2021-11-03 22:39:59,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3785 ImplicationChecksByTransitivity, 17208.24ms TimeCoverageRelationStatistics Valid=2056, Invalid=9500, Unknown=0, NotChecked=0, Total=11556 [2021-11-03 22:39:59,072 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2987 mSDsluCounter, 5620 mSDsCounter, 0 mSdLazyCounter, 9419 mSolverCounterSat, 180 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31347.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2987 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 104.33ms SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 9419 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33026.00ms IncrementalHoareTripleChecker+Time [2021-11-03 22:39:59,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2987 Valid, 0 Invalid, 9600 Unknown, 0 Unchecked, 104.33ms Time], IncrementalHoareTripleChecker [180 Valid, 9419 Invalid, 1 Unknown, 0 Unchecked, 33026.00ms Time] [2021-11-03 22:39:59,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-11-03 22:39:59,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 491. [2021-11-03 22:39:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 472 states have (on average 1.152542372881356) internal successors, (544), 490 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:39:59,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 544 transitions. [2021-11-03 22:39:59,092 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 544 transitions. Word has length 119 [2021-11-03 22:39:59,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:39:59,092 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 544 transitions. [2021-11-03 22:39:59,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 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) [2021-11-03 22:39:59,093 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 544 transitions. [2021-11-03 22:39:59,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-03 22:39:59,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:39:59,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:39:59,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 22:39:59,094 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)] === [2021-11-03 22:39:59,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:39:59,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1881624820, now seen corresponding path program 1 times [2021-11-03 22:39:59,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:39:59,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377121586] [2021-11-03 22:39:59,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:39:59,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:39:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:40:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:40:00,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:40:00,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377121586] [2021-11-03 22:40:00,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377121586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:40:00,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:40:00,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:40:00,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465365315] [2021-11-03 22:40:00,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:40:00,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:40:00,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:40:00,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:40:00,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:40:00,220 INFO L87 Difference]: Start difference. First operand 491 states and 544 transitions. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:40:02,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:40:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:40:16,118 INFO L93 Difference]: Finished difference Result 1263 states and 1411 transitions. [2021-11-03 22:40:16,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-03 22:40:16,118 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-03 22:40:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:40:16,121 INFO L225 Difference]: With dead ends: 1263 [2021-11-03 22:40:16,122 INFO L226 Difference]: Without dead ends: 1047 [2021-11-03 22:40:16,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 3349.90ms TimeCoverageRelationStatistics Valid=225, Invalid=831, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 22:40:16,123 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1341 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 2980 mSolverCounterSat, 95 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12064.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.42ms SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2980 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12827.91ms IncrementalHoareTripleChecker+Time [2021-11-03 22:40:16,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 0 Invalid, 3076 Unknown, 0 Unchecked, 34.42ms Time], IncrementalHoareTripleChecker [95 Valid, 2980 Invalid, 1 Unknown, 0 Unchecked, 12827.91ms Time] [2021-11-03 22:40:16,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2021-11-03 22:40:16,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 516. [2021-11-03 22:40:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 497 states have (on average 1.1468812877263581) internal successors, (570), 515 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:40:16,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 570 transitions. [2021-11-03 22:40:16,172 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 570 transitions. Word has length 122 [2021-11-03 22:40:16,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:40:16,172 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 570 transitions. [2021-11-03 22:40:16,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:40:16,173 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 570 transitions. [2021-11-03 22:40:16,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-03 22:40:16,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:40:16,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:40:16,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 22:40:16,174 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)] === [2021-11-03 22:40:16,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:40:16,175 INFO L85 PathProgramCache]: Analyzing trace with hash 824994574, now seen corresponding path program 1 times [2021-11-03 22:40:16,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:40:16,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656198267] [2021-11-03 22:40:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:40:16,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:40:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:40:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:40:20,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:40:20,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656198267] [2021-11-03 22:40:20,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656198267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:40:20,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:40:20,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-03 22:40:20,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680981523] [2021-11-03 22:40:20,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:40:20,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 22:40:20,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:40:20,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 22:40:20,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:40:20,369 INFO L87 Difference]: Start difference. First operand 516 states and 570 transitions. Second operand has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:40:22,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:40:43,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:40:43,892 INFO L93 Difference]: Finished difference Result 1077 states and 1200 transitions. [2021-11-03 22:40:43,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 22:40:43,893 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-03 22:40:43,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:40:43,895 INFO L225 Difference]: With dead ends: 1077 [2021-11-03 22:40:43,895 INFO L226 Difference]: Without dead ends: 895 [2021-11-03 22:40:43,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 3489.77ms TimeCoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2021-11-03 22:40:43,896 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1470 mSDsluCounter, 3773 mSDsCounter, 0 mSdLazyCounter, 5719 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19714.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.71ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 5719 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20856.62ms IncrementalHoareTripleChecker+Time [2021-11-03 22:40:43,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 0 Invalid, 5776 Unknown, 0 Unchecked, 56.71ms Time], IncrementalHoareTripleChecker [56 Valid, 5719 Invalid, 1 Unknown, 0 Unchecked, 20856.62ms Time] [2021-11-03 22:40:43,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-11-03 22:40:43,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 626. [2021-11-03 22:40:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 607 states have (on average 1.1350906095551894) internal successors, (689), 625 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:40:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 689 transitions. [2021-11-03 22:40:43,923 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 689 transitions. Word has length 122 [2021-11-03 22:40:43,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:40:43,923 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 689 transitions. [2021-11-03 22:40:43,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:40:43,924 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 689 transitions. [2021-11-03 22:40:43,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-03 22:40:43,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:40:43,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:40:43,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 22:40:43,926 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)] === [2021-11-03 22:40:43,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:40:43,927 INFO L85 PathProgramCache]: Analyzing trace with hash -608015608, now seen corresponding path program 1 times [2021-11-03 22:40:43,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:40:43,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348710683] [2021-11-03 22:40:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:40:43,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:40:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:40:44,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:40:44,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:40:44,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348710683] [2021-11-03 22:40:44,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348710683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:40:44,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:40:44,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:40:44,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768465904] [2021-11-03 22:40:44,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:40:44,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:40:44,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:40:44,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:40:44,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:40:44,574 INFO L87 Difference]: Start difference. First operand 626 states and 689 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:40:46,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:40:57,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:40:57,200 INFO L93 Difference]: Finished difference Result 1065 states and 1183 transitions. [2021-11-03 22:40:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 22:40:57,200 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-03 22:40:57,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:40:57,203 INFO L225 Difference]: With dead ends: 1065 [2021-11-03 22:40:57,203 INFO L226 Difference]: Without dead ends: 917 [2021-11-03 22:40:57,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 797.20ms TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:40:57,204 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 576 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 3122 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11277.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.36ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3122 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11948.60ms IncrementalHoareTripleChecker+Time [2021-11-03 22:40:57,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 0 Invalid, 3157 Unknown, 0 Unchecked, 25.36ms Time], IncrementalHoareTripleChecker [34 Valid, 3122 Invalid, 1 Unknown, 0 Unchecked, 11948.60ms Time] [2021-11-03 22:40:57,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2021-11-03 22:40:57,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 659. [2021-11-03 22:40:57,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 640 states have (on average 1.1375) internal successors, (728), 658 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:40:57,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 728 transitions. [2021-11-03 22:40:57,227 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 728 transitions. Word has length 122 [2021-11-03 22:40:57,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:40:57,228 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 728 transitions. [2021-11-03 22:40:57,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:40:57,228 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 728 transitions. [2021-11-03 22:40:57,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-03 22:40:57,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:40:57,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:40:57,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-03 22:40:57,230 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 22:40:57,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:40:57,231 INFO L85 PathProgramCache]: Analyzing trace with hash 72042762, now seen corresponding path program 1 times [2021-11-03 22:40:57,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:40:57,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283666225] [2021-11-03 22:40:57,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:40:57,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:40:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:41:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:41:00,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:41:00,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283666225] [2021-11-03 22:41:00,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283666225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:41:00,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:41:00,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:41:00,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184983386] [2021-11-03 22:41:00,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:41:00,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:41:00,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:41:00,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:41:00,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:41:00,203 INFO L87 Difference]: Start difference. First operand 659 states and 728 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:41:02,581 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:41:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:41:11,256 INFO L93 Difference]: Finished difference Result 1323 states and 1468 transitions. [2021-11-03 22:41:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 22:41:11,257 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-03 22:41:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:41:11,259 INFO L225 Difference]: With dead ends: 1323 [2021-11-03 22:41:11,259 INFO L226 Difference]: Without dead ends: 848 [2021-11-03 22:41:11,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1046.02ms TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2021-11-03 22:41:11,260 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1218 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9588.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.99ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10222.96ms IncrementalHoareTripleChecker+Time [2021-11-03 22:41:11,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 0 Invalid, 2371 Unknown, 0 Unchecked, 24.99ms Time], IncrementalHoareTripleChecker [35 Valid, 2335 Invalid, 1 Unknown, 0 Unchecked, 10222.96ms Time] [2021-11-03 22:41:11,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2021-11-03 22:41:11,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 743. [2021-11-03 22:41:11,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 724 states have (on average 1.1616022099447514) internal successors, (841), 742 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:41:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 841 transitions. [2021-11-03 22:41:11,285 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 841 transitions. Word has length 122 [2021-11-03 22:41:11,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:41:11,285 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 841 transitions. [2021-11-03 22:41:11,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:41:11,285 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 841 transitions. [2021-11-03 22:41:11,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-03 22:41:11,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:41:11,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:41:11,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-03 22:41:11,286 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 22:41:11,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:41:11,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1579085436, now seen corresponding path program 1 times [2021-11-03 22:41:11,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:41:11,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144062554] [2021-11-03 22:41:11,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:41:11,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:41:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:41:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:41:14,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:41:14,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144062554] [2021-11-03 22:41:14,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144062554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:41:14,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:41:14,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-03 22:41:14,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791150663] [2021-11-03 22:41:14,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:41:14,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-03 22:41:14,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:41:14,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-03 22:41:14,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-11-03 22:41:14,207 INFO L87 Difference]: Start difference. First operand 743 states and 841 transitions. Second operand has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 22 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:41:16,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:41:51,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:41:51,296 INFO L93 Difference]: Finished difference Result 2136 states and 2440 transitions. [2021-11-03 22:41:51,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-03 22:41:51,297 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 22 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-03 22:41:51,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:41:51,302 INFO L225 Difference]: With dead ends: 2136 [2021-11-03 22:41:51,302 INFO L226 Difference]: Without dead ends: 1713 [2021-11-03 22:41:51,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 9920.32ms TimeCoverageRelationStatistics Valid=797, Invalid=3363, Unknown=0, NotChecked=0, Total=4160 [2021-11-03 22:41:51,304 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2066 mSDsluCounter, 4919 mSDsCounter, 0 mSdLazyCounter, 7877 mSolverCounterSat, 139 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26913.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.20ms SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 7877 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28384.24ms IncrementalHoareTripleChecker+Time [2021-11-03 22:41:51,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2066 Valid, 0 Invalid, 8017 Unknown, 0 Unchecked, 87.20ms Time], IncrementalHoareTripleChecker [139 Valid, 7877 Invalid, 1 Unknown, 0 Unchecked, 28384.24ms Time] [2021-11-03 22:41:51,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-11-03 22:41:51,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 759. [2021-11-03 22:41:51,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 740 states have (on average 1.1567567567567567) internal successors, (856), 758 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:41:51,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 856 transitions. [2021-11-03 22:41:51,336 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 856 transitions. Word has length 125 [2021-11-03 22:41:51,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:41:51,336 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 856 transitions. [2021-11-03 22:41:51,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 22 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:41:51,336 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 856 transitions. [2021-11-03 22:41:51,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-03 22:41:51,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:41:51,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:41:51,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 22:41:51,338 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 22:41:51,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:41:51,339 INFO L85 PathProgramCache]: Analyzing trace with hash 549726138, now seen corresponding path program 1 times [2021-11-03 22:41:51,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:41:51,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646077522] [2021-11-03 22:41:51,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:41:51,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:41:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:41:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:41:56,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:41:56,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646077522] [2021-11-03 22:41:56,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646077522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:41:56,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:41:56,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-03 22:41:56,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043467197] [2021-11-03 22:41:56,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:41:56,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-03 22:41:56,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:41:56,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-03 22:41:56,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2021-11-03 22:41:56,514 INFO L87 Difference]: Start difference. First operand 759 states and 856 transitions. Second operand has 27 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:41:58,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:42:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:42:50,968 INFO L93 Difference]: Finished difference Result 2214 states and 2502 transitions. [2021-11-03 22:42:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-03 22:42:50,969 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-03 22:42:50,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:42:50,974 INFO L225 Difference]: With dead ends: 2214 [2021-11-03 22:42:50,974 INFO L226 Difference]: Without dead ends: 1998 [2021-11-03 22:42:50,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1504 ImplicationChecksByTransitivity, 14285.53ms TimeCoverageRelationStatistics Valid=973, Invalid=5033, Unknown=0, NotChecked=0, Total=6006 [2021-11-03 22:42:50,978 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4524 mSDsluCounter, 7626 mSDsCounter, 0 mSdLazyCounter, 12037 mSolverCounterSat, 220 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39955.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4524 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 137.34ms SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 12037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42224.16ms IncrementalHoareTripleChecker+Time [2021-11-03 22:42:50,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4524 Valid, 0 Invalid, 12258 Unknown, 0 Unchecked, 137.34ms Time], IncrementalHoareTripleChecker [220 Valid, 12037 Invalid, 1 Unknown, 0 Unchecked, 42224.16ms Time] [2021-11-03 22:42:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2021-11-03 22:42:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 767. [2021-11-03 22:42:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 748 states have (on average 1.1550802139037433) internal successors, (864), 766 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:42:51,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 864 transitions. [2021-11-03 22:42:51,005 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 864 transitions. Word has length 125 [2021-11-03 22:42:51,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:42:51,006 INFO L470 AbstractCegarLoop]: Abstraction has 767 states and 864 transitions. [2021-11-03 22:42:51,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:42:51,006 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 864 transitions. [2021-11-03 22:42:51,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-03 22:42:51,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:42:51,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:42:51,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-03 22:42:51,007 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)] === [2021-11-03 22:42:51,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:42:51,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1038621764, now seen corresponding path program 1 times [2021-11-03 22:42:51,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:42:51,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246497398] [2021-11-03 22:42:51,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:42:51,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:42:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:42:56,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:42:56,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:42:56,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246497398] [2021-11-03 22:42:56,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246497398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:42:56,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:42:56,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 22:42:56,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911104700] [2021-11-03 22:42:56,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:42:56,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 22:42:56,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:42:56,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 22:42:56,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:42:56,648 INFO L87 Difference]: Start difference. First operand 767 states and 864 transitions. Second operand has 19 states, 19 states have (on average 6.578947368421052) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:42:58,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:43:18,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:43:18,548 INFO L93 Difference]: Finished difference Result 1565 states and 1787 transitions. [2021-11-03 22:43:18,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-03 22:43:18,549 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.578947368421052) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-03 22:43:18,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:43:18,552 INFO L225 Difference]: With dead ends: 1565 [2021-11-03 22:43:18,552 INFO L226 Difference]: Without dead ends: 1248 [2021-11-03 22:43:18,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 4574.11ms TimeCoverageRelationStatistics Valid=356, Invalid=1284, Unknown=0, NotChecked=0, Total=1640 [2021-11-03 22:43:18,553 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2279 mSDsluCounter, 3058 mSDsCounter, 0 mSdLazyCounter, 4926 mSolverCounterSat, 122 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17224.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2279 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.38ms SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 4926 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18232.76ms IncrementalHoareTripleChecker+Time [2021-11-03 22:43:18,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2279 Valid, 0 Invalid, 5049 Unknown, 0 Unchecked, 56.38ms Time], IncrementalHoareTripleChecker [122 Valid, 4926 Invalid, 1 Unknown, 0 Unchecked, 18232.76ms Time] [2021-11-03 22:43:18,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-11-03 22:43:18,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 788. [2021-11-03 22:43:18,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 769 states have (on average 1.1677503250975292) internal successors, (898), 787 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:18,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 898 transitions. [2021-11-03 22:43:18,589 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 898 transitions. Word has length 125 [2021-11-03 22:43:18,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:43:18,589 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 898 transitions. [2021-11-03 22:43:18,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.578947368421052) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:18,589 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 898 transitions. [2021-11-03 22:43:18,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 22:43:18,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:43:18,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:43:18,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-03 22:43:18,591 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)] === [2021-11-03 22:43:18,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:43:18,592 INFO L85 PathProgramCache]: Analyzing trace with hash -484967015, now seen corresponding path program 1 times [2021-11-03 22:43:18,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:43:18,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713245162] [2021-11-03 22:43:18,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:43:18,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:43:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:43:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:21,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:43:21,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713245162] [2021-11-03 22:43:21,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713245162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:43:21,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:43:21,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:43:21,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592171495] [2021-11-03 22:43:21,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:43:21,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:43:21,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:43:21,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:43:21,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:43:21,627 INFO L87 Difference]: Start difference. First operand 788 states and 898 transitions. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 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) [2021-11-03 22:43:23,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:43:34,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:43:34,346 INFO L93 Difference]: Finished difference Result 1177 states and 1333 transitions. [2021-11-03 22:43:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-03 22:43:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 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 [2021-11-03 22:43:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:43:34,349 INFO L225 Difference]: With dead ends: 1177 [2021-11-03 22:43:34,349 INFO L226 Difference]: Without dead ends: 860 [2021-11-03 22:43:34,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1667.56ms TimeCoverageRelationStatistics Valid=220, Invalid=482, Unknown=0, NotChecked=0, Total=702 [2021-11-03 22:43:34,350 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1572 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10629.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.42ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11288.64ms IncrementalHoareTripleChecker+Time [2021-11-03 22:43:34,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1572 Valid, 0 Invalid, 2842 Unknown, 0 Unchecked, 31.42ms Time], IncrementalHoareTripleChecker [37 Valid, 2804 Invalid, 1 Unknown, 0 Unchecked, 11288.64ms Time] [2021-11-03 22:43:34,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-11-03 22:43:34,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 759. [2021-11-03 22:43:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 740 states have (on average 1.1716216216216215) internal successors, (867), 758 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:34,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 867 transitions. [2021-11-03 22:43:34,373 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 867 transitions. Word has length 128 [2021-11-03 22:43:34,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:43:34,373 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 867 transitions. [2021-11-03 22:43:34,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 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) [2021-11-03 22:43:34,373 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 867 transitions. [2021-11-03 22:43:34,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 22:43:34,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:43:34,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:43:34,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-03 22:43:34,375 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)] === [2021-11-03 22:43:34,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:43:34,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1466486195, now seen corresponding path program 1 times [2021-11-03 22:43:34,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:43:34,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249758173] [2021-11-03 22:43:34,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:43:34,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:43:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:43:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:40,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:43:40,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249758173] [2021-11-03 22:43:40,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249758173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:43:40,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:43:40,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:43:40,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635981577] [2021-11-03 22:43:40,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:43:40,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:43:40,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:43:40,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:43:40,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:43:40,857 INFO L87 Difference]: Start difference. First operand 759 states and 867 transitions. Second operand has 10 states, 10 states have (on average 13.1) internal successors, (131), 10 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) [2021-11-03 22:43:43,039 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:43:50,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:43:50,541 INFO L93 Difference]: Finished difference Result 1165 states and 1343 transitions. [2021-11-03 22:43:50,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 22:43:50,542 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.1) internal successors, (131), 10 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 [2021-11-03 22:43:50,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:43:50,545 INFO L225 Difference]: With dead ends: 1165 [2021-11-03 22:43:50,546 INFO L226 Difference]: Without dead ends: 901 [2021-11-03 22:43:50,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1123.66ms TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2021-11-03 22:43:50,547 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1175 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8342.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.38ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8891.00ms IncrementalHoareTripleChecker+Time [2021-11-03 22:43:50,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 0 Invalid, 2022 Unknown, 0 Unchecked, 20.38ms Time], IncrementalHoareTripleChecker [25 Valid, 1996 Invalid, 1 Unknown, 0 Unchecked, 8891.00ms Time] [2021-11-03 22:43:50,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2021-11-03 22:43:50,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 704. [2021-11-03 22:43:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 685 states have (on average 1.178102189781022) internal successors, (807), 703 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:50,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 807 transitions. [2021-11-03 22:43:50,580 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 807 transitions. Word has length 131 [2021-11-03 22:43:50,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:43:50,581 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 807 transitions. [2021-11-03 22:43:50,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.1) internal successors, (131), 10 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) [2021-11-03 22:43:50,581 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 807 transitions. [2021-11-03 22:43:50,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 22:43:50,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:43:50,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:43:50,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-03 22:43:50,583 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)] === [2021-11-03 22:43:50,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:43:50,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1360145407, now seen corresponding path program 1 times [2021-11-03 22:43:50,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:43:50,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514330511] [2021-11-03 22:43:50,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:43:50,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:43:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:43:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:51,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:43:51,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514330511] [2021-11-03 22:43:51,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514330511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:43:51,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:43:51,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:43:51,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208560616] [2021-11-03 22:43:51,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:43:51,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:43:51,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:43:51,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:43:51,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:43:51,079 INFO L87 Difference]: Start difference. First operand 704 states and 807 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 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) [2021-11-03 22:43:53,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:44:00,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:44:00,846 INFO L93 Difference]: Finished difference Result 1440 states and 1666 transitions. [2021-11-03 22:44:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:44:00,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 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 [2021-11-03 22:44:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:44:00,849 INFO L225 Difference]: With dead ends: 1440 [2021-11-03 22:44:00,849 INFO L226 Difference]: Without dead ends: 1086 [2021-11-03 22:44:00,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 669.05ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:44:00,850 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 368 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8632.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.27ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9174.23ms IncrementalHoareTripleChecker+Time [2021-11-03 22:44:00,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 0 Invalid, 2102 Unknown, 0 Unchecked, 18.27ms Time], IncrementalHoareTripleChecker [26 Valid, 2075 Invalid, 1 Unknown, 0 Unchecked, 9174.23ms Time] [2021-11-03 22:44:00,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2021-11-03 22:44:00,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 793. [2021-11-03 22:44:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 774 states have (on average 1.1614987080103358) internal successors, (899), 792 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:44:00,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 899 transitions. [2021-11-03 22:44:00,876 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 899 transitions. Word has length 131 [2021-11-03 22:44:00,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:44:00,876 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 899 transitions. [2021-11-03 22:44:00,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 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) [2021-11-03 22:44:00,876 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 899 transitions. [2021-11-03 22:44:00,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 22:44:00,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:44:00,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:44:00,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-03 22:44:00,877 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)] === [2021-11-03 22:44:00,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:44:00,878 INFO L85 PathProgramCache]: Analyzing trace with hash -103304323, now seen corresponding path program 1 times [2021-11-03 22:44:00,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:44:00,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515335382] [2021-11-03 22:44:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:44:00,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:44:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:44:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:44:04,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:44:04,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515335382] [2021-11-03 22:44:04,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515335382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:44:04,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:44:04,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-03 22:44:04,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189028728] [2021-11-03 22:44:04,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:44:04,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-03 22:44:04,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:44:04,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-03 22:44:04,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-03 22:44:04,995 INFO L87 Difference]: Start difference. First operand 793 states and 899 transitions. Second operand has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 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) [2021-11-03 22:44:07,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:45:06,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:45:06,126 INFO L93 Difference]: Finished difference Result 1807 states and 2059 transitions. [2021-11-03 22:45:06,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-11-03 22:45:06,127 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 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 [2021-11-03 22:45:06,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:45:06,131 INFO L225 Difference]: With dead ends: 1807 [2021-11-03 22:45:06,132 INFO L226 Difference]: Without dead ends: 1615 [2021-11-03 22:45:06,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5654 ImplicationChecksByTransitivity, 36021.39ms TimeCoverageRelationStatistics Valid=2371, Invalid=14141, Unknown=0, NotChecked=0, Total=16512 [2021-11-03 22:45:06,136 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5806 mSDsluCounter, 4343 mSDsCounter, 0 mSdLazyCounter, 7390 mSolverCounterSat, 334 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25575.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5806 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 92.26ms SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 7390 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27054.78ms IncrementalHoareTripleChecker+Time [2021-11-03 22:45:06,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5806 Valid, 0 Invalid, 7725 Unknown, 0 Unchecked, 92.26ms Time], IncrementalHoareTripleChecker [334 Valid, 7390 Invalid, 1 Unknown, 0 Unchecked, 27054.78ms Time] [2021-11-03 22:45:06,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-11-03 22:45:06,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 838. [2021-11-03 22:45:06,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 819 states have (on average 1.1575091575091576) internal successors, (948), 837 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:06,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 948 transitions. [2021-11-03 22:45:06,168 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 948 transitions. Word has length 131 [2021-11-03 22:45:06,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:45:06,169 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 948 transitions. [2021-11-03 22:45:06,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 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) [2021-11-03 22:45:06,169 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 948 transitions. [2021-11-03 22:45:06,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 22:45:06,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:45:06,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:45:06,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-03 22:45:06,170 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)] === [2021-11-03 22:45:06,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:45:06,171 INFO L85 PathProgramCache]: Analyzing trace with hash 576754047, now seen corresponding path program 1 times [2021-11-03 22:45:06,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:45:06,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147351285] [2021-11-03 22:45:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:45:06,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:45:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:45:11,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:11,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:45:11,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147351285] [2021-11-03 22:45:11,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147351285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:45:11,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:45:11,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-03 22:45:11,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375700563] [2021-11-03 22:45:11,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:45:11,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-03 22:45:11,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:45:11,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-03 22:45:11,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2021-11-03 22:45:11,250 INFO L87 Difference]: Start difference. First operand 838 states and 948 transitions. Second operand has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 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) [2021-11-03 22:45:13,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:45:54,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:45:54,994 INFO L93 Difference]: Finished difference Result 1852 states and 2111 transitions. [2021-11-03 22:45:54,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-03 22:45:54,995 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 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 [2021-11-03 22:45:54,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:45:54,999 INFO L225 Difference]: With dead ends: 1852 [2021-11-03 22:45:54,999 INFO L226 Difference]: Without dead ends: 1598 [2021-11-03 22:45:55,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1633 ImplicationChecksByTransitivity, 20234.56ms TimeCoverageRelationStatistics Valid=1038, Invalid=4814, Unknown=0, NotChecked=0, Total=5852 [2021-11-03 22:45:55,001 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3566 mSDsluCounter, 3698 mSDsCounter, 0 mSdLazyCounter, 6529 mSolverCounterSat, 257 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23835.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3566 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 81.42ms SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 6529 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25400.08ms IncrementalHoareTripleChecker+Time [2021-11-03 22:45:55,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3566 Valid, 0 Invalid, 6787 Unknown, 0 Unchecked, 81.42ms Time], IncrementalHoareTripleChecker [257 Valid, 6529 Invalid, 1 Unknown, 0 Unchecked, 25400.08ms Time] [2021-11-03 22:45:55,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-11-03 22:45:55,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 918. [2021-11-03 22:45:55,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 899 states have (on average 1.1479421579532814) internal successors, (1032), 917 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:55,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1032 transitions. [2021-11-03 22:45:55,038 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1032 transitions. Word has length 131 [2021-11-03 22:45:55,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:45:55,038 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 1032 transitions. [2021-11-03 22:45:55,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 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) [2021-11-03 22:45:55,039 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1032 transitions. [2021-11-03 22:45:55,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 22:45:55,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:45:55,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:45:55,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-03 22:45:55,040 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)] === [2021-11-03 22:45:55,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:45:55,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1691652225, now seen corresponding path program 1 times [2021-11-03 22:45:55,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:45:55,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98443982] [2021-11-03 22:45:55,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:45:55,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:45:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:45:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:59,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:45:59,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98443982] [2021-11-03 22:45:59,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98443982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:45:59,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:45:59,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 22:45:59,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344503365] [2021-11-03 22:45:59,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:45:59,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 22:45:59,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:45:59,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 22:45:59,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:45:59,908 INFO L87 Difference]: Start difference. First operand 918 states and 1032 transitions. Second operand has 15 states, 15 states have (on average 8.733333333333333) internal successors, (131), 15 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) [2021-11-03 22:46:02,215 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:13,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:13,383 INFO L93 Difference]: Finished difference Result 1294 states and 1455 transitions. [2021-11-03 22:46:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-03 22:46:13,384 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.733333333333333) internal successors, (131), 15 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 [2021-11-03 22:46:13,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:13,386 INFO L225 Difference]: With dead ends: 1294 [2021-11-03 22:46:13,386 INFO L226 Difference]: Without dead ends: 911 [2021-11-03 22:46:13,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 3356.81ms TimeCoverageRelationStatistics Valid=452, Invalid=1188, Unknown=0, NotChecked=0, Total=1640 [2021-11-03 22:46:13,387 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1461 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 90 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10246.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.14ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10898.32ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:13,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1461 Valid, 0 Invalid, 2765 Unknown, 0 Unchecked, 31.14ms Time], IncrementalHoareTripleChecker [90 Valid, 2674 Invalid, 1 Unknown, 0 Unchecked, 10898.32ms Time] [2021-11-03 22:46:13,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2021-11-03 22:46:13,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 760. [2021-11-03 22:46:13,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 741 states have (on average 1.164642375168691) internal successors, (863), 759 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:13,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 863 transitions. [2021-11-03 22:46:13,417 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 863 transitions. Word has length 131 [2021-11-03 22:46:13,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:13,418 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 863 transitions. [2021-11-03 22:46:13,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.733333333333333) internal successors, (131), 15 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) [2021-11-03 22:46:13,418 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 863 transitions. [2021-11-03 22:46:13,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-03 22:46:13,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:13,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:13,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-03 22:46:13,419 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)] === [2021-11-03 22:46:13,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:13,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1639228634, now seen corresponding path program 1 times [2021-11-03 22:46:13,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:13,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611620284] [2021-11-03 22:46:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:13,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:14,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:14,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611620284] [2021-11-03 22:46:14,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611620284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:14,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:14,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:46:14,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187060440] [2021-11-03 22:46:14,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:14,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:46:14,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:14,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:46:14,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:46:14,040 INFO L87 Difference]: Start difference. First operand 760 states and 863 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:16,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:23,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:23,810 INFO L93 Difference]: Finished difference Result 1741 states and 2053 transitions. [2021-11-03 22:46:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 22:46:23,810 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-11-03 22:46:23,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:23,813 INFO L225 Difference]: With dead ends: 1741 [2021-11-03 22:46:23,814 INFO L226 Difference]: Without dead ends: 1417 [2021-11-03 22:46:23,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 679.93ms TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:46:23,815 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 963 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 48 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8616.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.48ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9191.72ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:23,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 0 Invalid, 2200 Unknown, 0 Unchecked, 20.48ms Time], IncrementalHoareTripleChecker [48 Valid, 2151 Invalid, 1 Unknown, 0 Unchecked, 9191.72ms Time] [2021-11-03 22:46:23,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2021-11-03 22:46:23,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 814. [2021-11-03 22:46:23,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 795 states have (on average 1.1559748427672956) internal successors, (919), 813 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:23,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 919 transitions. [2021-11-03 22:46:23,849 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 919 transitions. Word has length 134 [2021-11-03 22:46:23,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:23,849 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 919 transitions. [2021-11-03 22:46:23,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:23,849 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 919 transitions. [2021-11-03 22:46:23,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-03 22:46:23,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:23,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:23,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-03 22:46:23,851 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)] === [2021-11-03 22:46:23,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:23,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1067390760, now seen corresponding path program 1 times [2021-11-03 22:46:23,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:23,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952148681] [2021-11-03 22:46:23,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:23,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:27,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:27,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952148681] [2021-11-03 22:46:27,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952148681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:27,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:27,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:46:27,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278472] [2021-11-03 22:46:27,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:27,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:46:27,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:27,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:46:27,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:46:27,026 INFO L87 Difference]: Start difference. First operand 814 states and 919 transitions. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:29,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:43,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:43,923 INFO L93 Difference]: Finished difference Result 1681 states and 1964 transitions. [2021-11-03 22:46:43,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 22:46:43,924 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-11-03 22:46:43,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:43,926 INFO L225 Difference]: With dead ends: 1681 [2021-11-03 22:46:43,926 INFO L226 Difference]: Without dead ends: 1455 [2021-11-03 22:46:43,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1996.86ms TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2021-11-03 22:46:43,927 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1522 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 4010 mSolverCounterSat, 66 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14441.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.94ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 4010 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15287.35ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:43,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 0 Invalid, 4077 Unknown, 0 Unchecked, 42.94ms Time], IncrementalHoareTripleChecker [66 Valid, 4010 Invalid, 1 Unknown, 0 Unchecked, 15287.35ms Time] [2021-11-03 22:46:43,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-11-03 22:46:43,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 805. [2021-11-03 22:46:43,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 786 states have (on average 1.1577608142493638) internal successors, (910), 804 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:43,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 910 transitions. [2021-11-03 22:46:43,968 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 910 transitions. Word has length 134 [2021-11-03 22:46:43,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:43,968 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 910 transitions. [2021-11-03 22:46:43,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:43,969 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 910 transitions. [2021-11-03 22:46:43,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-03 22:46:43,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:43,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:43,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-03 22:46:43,970 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)] === [2021-11-03 22:46:43,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:43,971 INFO L85 PathProgramCache]: Analyzing trace with hash -396058970, now seen corresponding path program 1 times [2021-11-03 22:46:43,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:43,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395822613] [2021-11-03 22:46:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:43,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:44,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:44,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:44,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395822613] [2021-11-03 22:46:44,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395822613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:44,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:44,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:46:44,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411953844] [2021-11-03 22:46:44,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:44,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:46:44,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:44,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:46:44,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:46:44,329 INFO L87 Difference]: Start difference. First operand 805 states and 910 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:46,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:53,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:53,554 INFO L93 Difference]: Finished difference Result 1419 states and 1643 transitions. [2021-11-03 22:46:53,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:46:53,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-11-03 22:46:53,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:53,556 INFO L225 Difference]: With dead ends: 1419 [2021-11-03 22:46:53,556 INFO L226 Difference]: Without dead ends: 1075 [2021-11-03 22:46:53,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 360.15ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:46:53,557 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 359 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8357.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.85ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8892.01ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:53,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 0 Invalid, 2093 Unknown, 0 Unchecked, 16.85ms Time], IncrementalHoareTripleChecker [22 Valid, 2070 Invalid, 1 Unknown, 0 Unchecked, 8892.01ms Time] [2021-11-03 22:46:53,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2021-11-03 22:46:53,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 788. [2021-11-03 22:46:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 769 states have (on average 1.1560468140442133) internal successors, (889), 787 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 889 transitions. [2021-11-03 22:46:53,591 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 889 transitions. Word has length 134 [2021-11-03 22:46:53,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:53,591 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 889 transitions. [2021-11-03 22:46:53,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:53,592 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 889 transitions. [2021-11-03 22:46:53,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-03 22:46:53,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:53,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:53,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-03 22:46:53,593 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 22:46:53,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:53,594 INFO L85 PathProgramCache]: Analyzing trace with hash 606350820, now seen corresponding path program 1 times [2021-11-03 22:46:53,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:53,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137245553] [2021-11-03 22:46:53,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:53,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:54,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:54,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:54,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137245553] [2021-11-03 22:46:54,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137245553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:54,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:54,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:46:54,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301242202] [2021-11-03 22:46:54,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:54,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:46:54,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:54,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:46:54,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:46:54,128 INFO L87 Difference]: Start difference. First operand 788 states and 889 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15