./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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_string_harness.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 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 08:59:31,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:59:31,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:59:31,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:59:31,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:59:31,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:59:31,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:59:31,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:59:31,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:59:31,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:59:31,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:59:31,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:59:31,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:59:31,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:59:31,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:59:31,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:59:31,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:59:31,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:59:31,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:59:31,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:59:31,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:59:31,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:59:31,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:59:31,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:59:31,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:59:31,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:59:31,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:59:31,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:59:31,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:59:31,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:59:31,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:59:31,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:59:31,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:59:31,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:59:31,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:59:31,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:59:31,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:59:31,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:59:31,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:59:31,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:59:31,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:59:31,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 08:59:31,993 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:59:31,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:59:31,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:59:31,994 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:59:31,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:59:31,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:59:31,996 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:59:31,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:59:31,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:59:31,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:59:31,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:59:31,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:59:31,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:59:31,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:59:31,997 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:59:31,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:59:31,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:59:31,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:59:31,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:59:31,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:59:31,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:59:31,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:59:31,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:59:31,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:59:31,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:59:31,999 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:59:31,999 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:59:31,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:59:32,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:59:32,000 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f [2021-11-07 08:59:32,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:59:32,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:59:32,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:59:32,231 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:59:32,232 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:59:32,233 INFO L432 ainManager$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_string_harness.i [2021-11-07 08:59:32,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/461d0bdc7/9347649dc17b4f5db4387e3165be0828/FLAG649bbbe19 [2021-11-07 08:59:32,949 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:59:32,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2021-11-07 08:59:32,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/461d0bdc7/9347649dc17b4f5db4387e3165be0828/FLAG649bbbe19 [2021-11-07 08:59:33,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/461d0bdc7/9347649dc17b4f5db4387e3165be0828 [2021-11-07 08:59:33,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:59:33,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:59:33,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:59:33,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:59:33,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:59:33,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:59:33" (1/1) ... [2021-11-07 08:59:33,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51cc3ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:33, skipping insertion in model container [2021-11-07 08:59:33,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:59:33" (1/1) ... [2021-11-07 08:59:33,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:59:33,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:59:33,586 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_string_harness.i[4510,4523] [2021-11-07 08:59:33,590 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_string_harness.i[4570,4583] [2021-11-07 08:59:33,603 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:59:33,613 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 08:59:34,075 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,075 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,076 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,076 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,077 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,084 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,085 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,086 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,086 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,087 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,088 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,088 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,089 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,299 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 08:59:34,299 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 08:59:34,300 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 08:59:34,301 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 08:59:34,302 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 08:59:34,302 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 08:59:34,302 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 08:59:34,303 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 08:59:34,303 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 08:59:34,304 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 08:59:34,428 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 08:59:34,456 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,478 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,545 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,546 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:59:34,672 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:59:34,694 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_string_harness.i[4510,4523] [2021-11-07 08:59:34,695 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_string_harness.i[4570,4583] [2021-11-07 08:59:34,697 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:59:34,698 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 08:59:34,724 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,725 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,725 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,726 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,726 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,729 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,730 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,730 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,731 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,733 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,733 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,734 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,734 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,764 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 08:59:34,765 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 08:59:34,765 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 08:59:34,765 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 08:59:34,766 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 08:59:34,766 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 08:59:34,767 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 08:59:34,767 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 08:59:34,767 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 08:59:34,767 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 08:59:34,791 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 08:59:34,798 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,801 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,861 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,861 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:34,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:59:35,037 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:59:35,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:35 WrapperNode [2021-11-07 08:59:35,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:59:35,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:59:35,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:59:35,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:59:35,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:35" (1/1) ... [2021-11-07 08:59:35,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:35" (1/1) ... [2021-11-07 08:59:35,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:59:35,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:59:35,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:59:35,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:59:35,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:35" (1/1) ... [2021-11-07 08:59:35,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:35" (1/1) ... [2021-11-07 08:59:35,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:35" (1/1) ... [2021-11-07 08:59:35,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:35" (1/1) ... [2021-11-07 08:59:35,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:35" (1/1) ... [2021-11-07 08:59:35,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:35" (1/1) ... [2021-11-07 08:59:35,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:35" (1/1) ... [2021-11-07 08:59:35,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:59:35,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:59:35,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:59:35,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:59:35,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:35" (1/1) ... [2021-11-07 08:59:35,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:59:35,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 08:59:35,396 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) [2021-11-07 08:59:35,447 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 [2021-11-07 08:59:35,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:59:35,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-11-07 08:59:35,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 08:59:35,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 08:59:35,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:59:35,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:59:35,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:59:35,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:59:35,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:59:35,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 08:59:35,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 08:59:35,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:59:35,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:59:35,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:59:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:59:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-11-07 08:59:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:59:43,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:59:43,703 INFO L299 CfgBuilder]: Removed 118 assume(true) statements. [2021-11-07 08:59:43,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:59:43 BoogieIcfgContainer [2021-11-07 08:59:43,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:59:43,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:59:43,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:59:43,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:59:43,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:59:33" (1/3) ... [2021-11-07 08:59:43,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d17dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:59:43, skipping insertion in model container [2021-11-07 08:59:43,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:35" (2/3) ... [2021-11-07 08:59:43,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d17dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:59:43, skipping insertion in model container [2021-11-07 08:59:43,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:59:43" (3/3) ... [2021-11-07 08:59:43,709 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_string_harness.i [2021-11-07 08:59:43,712 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:59:43,712 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-11-07 08:59:43,740 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:59:43,745 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 [2021-11-07 08:59:43,746 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-11-07 08:59:43,783 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 223 states have (on average 1.4887892376681615) internal successors, (332), 238 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 08:59:43,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:43,790 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] [2021-11-07 08:59:43,790 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:59:43,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:43,796 INFO L85 PathProgramCache]: Analyzing trace with hash -340771444, now seen corresponding path program 1 times [2021-11-07 08:59:43,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:43,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240167460] [2021-11-07 08:59:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:43,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:44,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:59:44,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:44,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240167460] [2021-11-07 08:59:44,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240167460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:44,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:44,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:59:44,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396850267] [2021-11-07 08:59:44,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:44,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:59:44,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:44,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:59:44,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:59:44,267 INFO L87 Difference]: Start difference. First operand has 239 states, 223 states have (on average 1.4887892376681615) internal successors, (332), 238 states have internal predecessors, (332), 0 states have call successors, (0), 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 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:44,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:44,307 INFO L93 Difference]: Finished difference Result 472 states and 656 transitions. [2021-11-07 08:59:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:59:44,309 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-07 08:59:44,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:44,316 INFO L225 Difference]: With dead ends: 472 [2021-11-07 08:59:44,316 INFO L226 Difference]: Without dead ends: 234 [2021-11-07 08:59:44,319 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 [2021-11-07 08:59:44,320 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:44,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 08:59:44,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-07 08:59:44,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-07 08:59:44,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 219 states have (on average 1.3744292237442923) internal successors, (301), 233 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:44,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 301 transitions. [2021-11-07 08:59:44,350 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 301 transitions. Word has length 35 [2021-11-07 08:59:44,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:44,351 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 301 transitions. [2021-11-07 08:59:44,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:44,351 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 301 transitions. [2021-11-07 08:59:44,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 08:59:44,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:44,352 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] [2021-11-07 08:59:44,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:59:44,353 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:59:44,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:44,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1022973578, now seen corresponding path program 1 times [2021-11-07 08:59:44,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:44,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007617999] [2021-11-07 08:59:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:44,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:59:44,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:44,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007617999] [2021-11-07 08:59:44,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007617999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:44,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:44,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:59:44,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604490152] [2021-11-07 08:59:44,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:44,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:59:44,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:44,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:59:44,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:44,581 INFO L87 Difference]: Start difference. First operand 234 states and 301 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:44,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:44,757 INFO L93 Difference]: Finished difference Result 430 states and 554 transitions. [2021-11-07 08:59:44,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:59:44,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-07 08:59:44,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:44,759 INFO L225 Difference]: With dead ends: 430 [2021-11-07 08:59:44,759 INFO L226 Difference]: Without dead ends: 234 [2021-11-07 08:59:44,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.51ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:44,761 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 269 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.70ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 155.50ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:44,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 461 Invalid, 51 Unknown, 0 Unchecked, 3.70ms Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 155.50ms Time] [2021-11-07 08:59:44,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-07 08:59:44,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-07 08:59:44,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 219 states have (on average 1.365296803652968) internal successors, (299), 233 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 299 transitions. [2021-11-07 08:59:44,769 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 299 transitions. Word has length 35 [2021-11-07 08:59:44,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:44,770 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 299 transitions. [2021-11-07 08:59:44,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 299 transitions. [2021-11-07 08:59:44,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 08:59:44,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:44,771 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] [2021-11-07 08:59:44,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:59:44,771 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:59:44,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:44,772 INFO L85 PathProgramCache]: Analyzing trace with hash -344459875, now seen corresponding path program 1 times [2021-11-07 08:59:44,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:44,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446758697] [2021-11-07 08:59:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:44,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:59:44,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:44,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446758697] [2021-11-07 08:59:44,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446758697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:44,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:44,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:59:44,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368027580] [2021-11-07 08:59:44,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:44,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:59:44,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:44,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:59:44,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:44,985 INFO L87 Difference]: Start difference. First operand 234 states and 299 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:45,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:45,337 INFO L93 Difference]: Finished difference Result 491 states and 636 transitions. [2021-11-07 08:59:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:59:45,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 08:59:45,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:45,339 INFO L225 Difference]: With dead ends: 491 [2021-11-07 08:59:45,339 INFO L226 Difference]: Without dead ends: 294 [2021-11-07 08:59:45,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.79ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:59:45,340 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 129 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 288.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.48ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 313.64ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:45,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 826 Invalid, 122 Unknown, 0 Unchecked, 3.48ms Time], IncrementalHoareTripleChecker [21 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 313.64ms Time] [2021-11-07 08:59:45,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-07 08:59:45,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 246. [2021-11-07 08:59:45,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 231 states have (on average 1.3463203463203464) internal successors, (311), 245 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 311 transitions. [2021-11-07 08:59:45,348 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 311 transitions. Word has length 41 [2021-11-07 08:59:45,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:45,348 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 311 transitions. [2021-11-07 08:59:45,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:45,349 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 311 transitions. [2021-11-07 08:59:45,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 08:59:45,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:45,350 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] [2021-11-07 08:59:45,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:59:45,350 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:59:45,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:45,351 INFO L85 PathProgramCache]: Analyzing trace with hash -406499489, now seen corresponding path program 1 times [2021-11-07 08:59:45,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:45,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581430887] [2021-11-07 08:59:45,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:45,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:59:45,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:45,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581430887] [2021-11-07 08:59:45,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581430887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:45,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:45,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:59:45,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892776756] [2021-11-07 08:59:45,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:45,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:59:45,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:45,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:59:45,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:59:45,937 INFO L87 Difference]: Start difference. First operand 246 states and 311 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:46,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:46,280 INFO L93 Difference]: Finished difference Result 267 states and 337 transitions. [2021-11-07 08:59:46,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:59:46,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 08:59:46,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:46,282 INFO L225 Difference]: With dead ends: 267 [2021-11-07 08:59:46,282 INFO L226 Difference]: Without dead ends: 265 [2021-11-07 08:59:46,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 174.18ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:59:46,283 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 333 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 233.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.91ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 251.31ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:46,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 847 Invalid, 86 Unknown, 0 Unchecked, 2.91ms Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 251.31ms Time] [2021-11-07 08:59:46,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-07 08:59:46,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 244. [2021-11-07 08:59:46,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 230 states have (on average 1.3434782608695652) internal successors, (309), 243 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:46,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 309 transitions. [2021-11-07 08:59:46,289 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 309 transitions. Word has length 41 [2021-11-07 08:59:46,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:46,290 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 309 transitions. [2021-11-07 08:59:46,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:46,290 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 309 transitions. [2021-11-07 08:59:46,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 08:59:46,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:46,291 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] [2021-11-07 08:59:46,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:59:46,291 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:59:46,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:46,292 INFO L85 PathProgramCache]: Analyzing trace with hash 196158817, now seen corresponding path program 1 times [2021-11-07 08:59:46,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:46,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93402748] [2021-11-07 08:59:46,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:46,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:48,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:59:48,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:48,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93402748] [2021-11-07 08:59:48,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93402748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:48,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:48,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:59:48,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565285388] [2021-11-07 08:59:48,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:48,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:59:48,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:48,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:59:48,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:59:48,572 INFO L87 Difference]: Start difference. First operand 244 states and 309 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:50,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:52,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:54,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:54,090 INFO L93 Difference]: Finished difference Result 461 states and 584 transitions. [2021-11-07 08:59:54,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:59:54,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-11-07 08:59:54,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:54,096 INFO L225 Difference]: With dead ends: 461 [2021-11-07 08:59:54,096 INFO L226 Difference]: Without dead ends: 459 [2021-11-07 08:59:54,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 221.16ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:59:54,099 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 525 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5087.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.46ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5376.10ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:54,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 899 Invalid, 290 Unknown, 0 Unchecked, 8.46ms Time], IncrementalHoareTripleChecker [5 Valid, 283 Invalid, 2 Unknown, 0 Unchecked, 5376.10ms Time] [2021-11-07 08:59:54,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-11-07 08:59:54,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 335. [2021-11-07 08:59:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 321 states have (on average 1.35202492211838) internal successors, (434), 334 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:54,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 434 transitions. [2021-11-07 08:59:54,132 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 434 transitions. Word has length 43 [2021-11-07 08:59:54,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:54,132 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 434 transitions. [2021-11-07 08:59:54,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:54,133 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 434 transitions. [2021-11-07 08:59:54,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 08:59:54,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:54,134 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] [2021-11-07 08:59:54,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:59:54,134 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:59:54,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:54,135 INFO L85 PathProgramCache]: Analyzing trace with hash -677490270, now seen corresponding path program 1 times [2021-11-07 08:59:54,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:54,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839694131] [2021-11-07 08:59:54,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:54,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:59:54,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:54,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839694131] [2021-11-07 08:59:54,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839694131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:54,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:54,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:59:54,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69865037] [2021-11-07 08:59:54,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:54,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:59:54,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:54,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:59:54,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:54,420 INFO L87 Difference]: Start difference. First operand 335 states and 434 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:54,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:54,492 INFO L93 Difference]: Finished difference Result 675 states and 876 transitions. [2021-11-07 08:59:54,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:59:54,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 08:59:54,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:54,495 INFO L225 Difference]: With dead ends: 675 [2021-11-07 08:59:54,495 INFO L226 Difference]: Without dead ends: 614 [2021-11-07 08:59:54,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.96ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:54,496 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 199 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.38ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.83ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:54,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 873 Invalid, 17 Unknown, 0 Unchecked, 1.38ms Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 60.83ms Time] [2021-11-07 08:59:54,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-07 08:59:54,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 563. [2021-11-07 08:59:54,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 549 states have (on average 1.355191256830601) internal successors, (744), 562 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:54,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 744 transitions. [2021-11-07 08:59:54,510 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 744 transitions. Word has length 45 [2021-11-07 08:59:54,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:54,511 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 744 transitions. [2021-11-07 08:59:54,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:54,512 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 744 transitions. [2021-11-07 08:59:54,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 08:59:54,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:54,514 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] [2021-11-07 08:59:54,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:59:54,514 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:59:54,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:54,515 INFO L85 PathProgramCache]: Analyzing trace with hash -469793789, now seen corresponding path program 1 times [2021-11-07 08:59:54,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:54,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972793019] [2021-11-07 08:59:54,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:54,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:59:56,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:56,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972793019] [2021-11-07 08:59:56,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972793019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:56,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:56,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:59:56,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785392280] [2021-11-07 08:59:56,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:56,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:59:56,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:56,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:59:56,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:59:56,704 INFO L87 Difference]: Start difference. First operand 563 states and 744 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:58,757 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:00,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:02,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:02,926 INFO L93 Difference]: Finished difference Result 1376 states and 1805 transitions. [2021-11-07 09:00:02,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 09:00:02,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 09:00:02,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:02,929 INFO L225 Difference]: With dead ends: 1376 [2021-11-07 09:00:02,929 INFO L226 Difference]: Without dead ends: 875 [2021-11-07 09:00:02,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 788.65ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:00:02,931 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 1828 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 42 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5309.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1828 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.75ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5576.06ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:02,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1828 Valid, 1268 Invalid, 366 Unknown, 0 Unchecked, 11.75ms Time], IncrementalHoareTripleChecker [42 Valid, 322 Invalid, 2 Unknown, 0 Unchecked, 5576.06ms Time] [2021-11-07 09:00:02,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-11-07 09:00:02,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 600. [2021-11-07 09:00:02,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 586 states have (on average 1.363481228668942) internal successors, (799), 599 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:02,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 799 transitions. [2021-11-07 09:00:02,962 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 799 transitions. Word has length 45 [2021-11-07 09:00:02,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:02,963 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 799 transitions. [2021-11-07 09:00:02,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:02,963 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 799 transitions. [2021-11-07 09:00:02,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 09:00:02,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:02,965 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] [2021-11-07 09:00:02,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 09:00:02,967 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:00:02,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:02,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1818669191, now seen corresponding path program 1 times [2021-11-07 09:00:02,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:02,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690138043] [2021-11-07 09:00:02,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:02,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:04,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:04,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690138043] [2021-11-07 09:00:04,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690138043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:04,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:04,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 09:00:04,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580965129] [2021-11-07 09:00:04,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:04,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:00:04,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:04,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:00:04,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:00:04,188 INFO L87 Difference]: Start difference. First operand 600 states and 799 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:06,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:08,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:10,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:12,618 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:16,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:16,353 INFO L93 Difference]: Finished difference Result 1494 states and 1948 transitions. [2021-11-07 09:00:16,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:00:16,354 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 09:00:16,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:16,357 INFO L225 Difference]: With dead ends: 1494 [2021-11-07 09:00:16,357 INFO L226 Difference]: Without dead ends: 1138 [2021-11-07 09:00:16,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1197.02ms TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:00:16,359 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 2558 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 29 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10704.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.86ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11346.64ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:16,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2558 Valid, 2259 Invalid, 745 Unknown, 0 Unchecked, 15.86ms Time], IncrementalHoareTripleChecker [29 Valid, 712 Invalid, 4 Unknown, 0 Unchecked, 11346.64ms Time] [2021-11-07 09:00:16,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-11-07 09:00:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 632. [2021-11-07 09:00:16,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 618 states have (on average 1.3576051779935274) internal successors, (839), 631 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 839 transitions. [2021-11-07 09:00:16,377 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 839 transitions. Word has length 49 [2021-11-07 09:00:16,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:16,377 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 839 transitions. [2021-11-07 09:00:16,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:16,378 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 839 transitions. [2021-11-07 09:00:16,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 09:00:16,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:16,379 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] [2021-11-07 09:00:16,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 09:00:16,379 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:00:16,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash 425314107, now seen corresponding path program 1 times [2021-11-07 09:00:16,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:16,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420287812] [2021-11-07 09:00:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:16,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:16,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:16,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420287812] [2021-11-07 09:00:16,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420287812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:16,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:16,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:00:16,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918055077] [2021-11-07 09:00:16,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:16,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:00:16,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:16,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:00:16,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:00:16,894 INFO L87 Difference]: Start difference. First operand 632 states and 839 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:17,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:17,835 INFO L93 Difference]: Finished difference Result 1487 states and 1936 transitions. [2021-11-07 09:00:17,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:00:17,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 09:00:17,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:17,838 INFO L225 Difference]: With dead ends: 1487 [2021-11-07 09:00:17,838 INFO L226 Difference]: Without dead ends: 905 [2021-11-07 09:00:17,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 246.54ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:00:17,842 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 177 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 717.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.63ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 772.02ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:17,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 2023 Invalid, 294 Unknown, 0 Unchecked, 3.63ms Time], IncrementalHoareTripleChecker [38 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 772.02ms Time] [2021-11-07 09:00:17,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-11-07 09:00:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 632. [2021-11-07 09:00:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 618 states have (on average 1.338187702265372) internal successors, (827), 631 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:17,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 827 transitions. [2021-11-07 09:00:17,879 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 827 transitions. Word has length 49 [2021-11-07 09:00:17,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:17,879 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 827 transitions. [2021-11-07 09:00:17,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:17,880 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 827 transitions. [2021-11-07 09:00:17,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 09:00:17,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:17,880 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] [2021-11-07 09:00:17,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 09:00:17,881 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:00:17,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:17,882 INFO L85 PathProgramCache]: Analyzing trace with hash -909484586, now seen corresponding path program 1 times [2021-11-07 09:00:17,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:17,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914662392] [2021-11-07 09:00:17,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:17,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:18,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:18,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:18,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914662392] [2021-11-07 09:00:18,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914662392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:18,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:18,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:00:18,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488428885] [2021-11-07 09:00:18,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:18,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:00:18,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:18,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:00:18,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:00:18,325 INFO L87 Difference]: Start difference. First operand 632 states and 827 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:20,390 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:21,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:21,873 INFO L93 Difference]: Finished difference Result 1879 states and 2434 transitions. [2021-11-07 09:00:21,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:00:21,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-07 09:00:21,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:21,877 INFO L225 Difference]: With dead ends: 1879 [2021-11-07 09:00:21,877 INFO L226 Difference]: Without dead ends: 1305 [2021-11-07 09:00:21,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 126.01ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:00:21,878 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 632 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3177.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.08ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3405.97ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:21,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 695 Invalid, 335 Unknown, 0 Unchecked, 4.08ms Time], IncrementalHoareTripleChecker [33 Valid, 301 Invalid, 1 Unknown, 0 Unchecked, 3405.97ms Time] [2021-11-07 09:00:21,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2021-11-07 09:00:21,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 745. [2021-11-07 09:00:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 731 states have (on average 1.3255813953488371) internal successors, (969), 744 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:21,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 969 transitions. [2021-11-07 09:00:21,911 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 969 transitions. Word has length 51 [2021-11-07 09:00:21,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:21,911 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 969 transitions. [2021-11-07 09:00:21,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:21,912 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 969 transitions. [2021-11-07 09:00:21,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 09:00:21,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:21,913 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] [2021-11-07 09:00:21,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 09:00:21,913 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:00:21,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:21,914 INFO L85 PathProgramCache]: Analyzing trace with hash -981871144, now seen corresponding path program 1 times [2021-11-07 09:00:21,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:21,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681769514] [2021-11-07 09:00:21,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:21,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:22,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:22,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681769514] [2021-11-07 09:00:22,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681769514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:22,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:22,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:00:22,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279102014] [2021-11-07 09:00:22,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:22,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:00:22,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:22,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:00:22,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:00:22,107 INFO L87 Difference]: Start difference. First operand 745 states and 969 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:22,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:22,426 INFO L93 Difference]: Finished difference Result 1500 states and 1945 transitions. [2021-11-07 09:00:22,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:00:22,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-07 09:00:22,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:22,428 INFO L225 Difference]: With dead ends: 1500 [2021-11-07 09:00:22,428 INFO L226 Difference]: Without dead ends: 783 [2021-11-07 09:00:22,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.48ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:00:22,430 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 35 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 254.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.86ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 269.25ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:22,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 801 Invalid, 114 Unknown, 0 Unchecked, 0.86ms Time], IncrementalHoareTripleChecker [19 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 269.25ms Time] [2021-11-07 09:00:22,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-11-07 09:00:22,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 717. [2021-11-07 09:00:22,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 703 states have (on average 1.310099573257468) internal successors, (921), 716 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 921 transitions. [2021-11-07 09:00:22,445 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 921 transitions. Word has length 51 [2021-11-07 09:00:22,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:22,445 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 921 transitions. [2021-11-07 09:00:22,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 921 transitions. [2021-11-07 09:00:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 09:00:22,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:22,446 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] [2021-11-07 09:00:22,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 09:00:22,446 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:00:22,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:22,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1961756626, now seen corresponding path program 1 times [2021-11-07 09:00:22,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:22,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404196176] [2021-11-07 09:00:22,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:22,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:26,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:26,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404196176] [2021-11-07 09:00:26,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404196176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:26,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:26,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:00:26,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044522751] [2021-11-07 09:00:26,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:26,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:00:26,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:26,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:00:26,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:00:26,359 INFO L87 Difference]: Start difference. First operand 717 states and 921 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:28,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:30,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:32,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:32,727 INFO L93 Difference]: Finished difference Result 1003 states and 1253 transitions. [2021-11-07 09:00:32,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 09:00:32,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-07 09:00:32,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:32,730 INFO L225 Difference]: With dead ends: 1003 [2021-11-07 09:00:32,730 INFO L226 Difference]: Without dead ends: 999 [2021-11-07 09:00:32,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 802.46ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:00:32,731 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 1281 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 34 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5488.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.84ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5781.46ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:32,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1281 Valid, 1043 Invalid, 417 Unknown, 0 Unchecked, 5.84ms Time], IncrementalHoareTripleChecker [34 Valid, 381 Invalid, 2 Unknown, 0 Unchecked, 5781.46ms Time] [2021-11-07 09:00:32,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2021-11-07 09:00:32,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 717. [2021-11-07 09:00:32,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 703 states have (on average 1.3072546230440967) internal successors, (919), 716 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) [2021-11-07 09:00:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 919 transitions. [2021-11-07 09:00:32,748 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 919 transitions. Word has length 51 [2021-11-07 09:00:32,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:32,748 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 919 transitions. [2021-11-07 09:00:32,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:32,748 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 919 transitions. [2021-11-07 09:00:32,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 09:00:32,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:32,749 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] [2021-11-07 09:00:32,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 09:00:32,749 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:00:32,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:32,750 INFO L85 PathProgramCache]: Analyzing trace with hash -200657010, now seen corresponding path program 1 times [2021-11-07 09:00:32,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:32,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558848685] [2021-11-07 09:00:32,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:32,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:34,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:34,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558848685] [2021-11-07 09:00:34,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558848685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:34,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:34,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 09:00:34,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253019306] [2021-11-07 09:00:34,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:34,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:00:34,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:34,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:00:34,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:00:34,124 INFO L87 Difference]: Start difference. First operand 717 states and 919 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:36,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:38,287 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:40,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:42,494 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:44,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:47,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:47,903 INFO L93 Difference]: Finished difference Result 894 states and 1121 transitions. [2021-11-07 09:00:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:00:47,904 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-07 09:00:47,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:47,906 INFO L225 Difference]: With dead ends: 894 [2021-11-07 09:00:47,906 INFO L226 Difference]: Without dead ends: 892 [2021-11-07 09:00:47,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 876.36ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:00:47,907 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 1678 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 26 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12635.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1678 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.32ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13361.16ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:47,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1678 Valid, 1660 Invalid, 616 Unknown, 0 Unchecked, 10.32ms Time], IncrementalHoareTripleChecker [26 Valid, 585 Invalid, 5 Unknown, 0 Unchecked, 13361.16ms Time] [2021-11-07 09:00:47,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-11-07 09:00:47,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 727. [2021-11-07 09:00:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 713 states have (on average 1.305750350631136) internal successors, (931), 726 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:47,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 931 transitions. [2021-11-07 09:00:47,924 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 931 transitions. Word has length 52 [2021-11-07 09:00:47,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:47,924 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 931 transitions. [2021-11-07 09:00:47,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:47,924 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 931 transitions. [2021-11-07 09:00:47,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 09:00:47,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:47,925 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] [2021-11-07 09:00:47,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 09:00:47,925 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:00:47,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:47,926 INFO L85 PathProgramCache]: Analyzing trace with hash -242380972, now seen corresponding path program 1 times [2021-11-07 09:00:47,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:47,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592385871] [2021-11-07 09:00:47,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:47,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:51,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:51,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592385871] [2021-11-07 09:00:51,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592385871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:51,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:51,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:00:51,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883733025] [2021-11-07 09:00:51,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:51,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:00:51,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:51,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:00:51,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:00:51,581 INFO L87 Difference]: Start difference. First operand 727 states and 931 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:53,635 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:55,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:57,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:00,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:02,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:02,017 INFO L93 Difference]: Finished difference Result 1298 states and 1632 transitions. [2021-11-07 09:01:02,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 09:01:02,018 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 09:01:02,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:02,021 INFO L225 Difference]: With dead ends: 1298 [2021-11-07 09:01:02,021 INFO L226 Difference]: Without dead ends: 1294 [2021-11-07 09:01:02,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 961.72ms TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-07 09:01:02,022 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 1336 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 18 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9138.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.15ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9673.94ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:02,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1336 Valid, 1606 Invalid, 308 Unknown, 0 Unchecked, 6.15ms Time], IncrementalHoareTripleChecker [18 Valid, 286 Invalid, 4 Unknown, 0 Unchecked, 9673.94ms Time] [2021-11-07 09:01:02,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-11-07 09:01:02,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 727. [2021-11-07 09:01:02,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 713 states have (on average 1.302945301542777) internal successors, (929), 726 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:02,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 929 transitions. [2021-11-07 09:01:02,046 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 929 transitions. Word has length 53 [2021-11-07 09:01:02,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:02,046 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 929 transitions. [2021-11-07 09:01:02,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:02,046 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 929 transitions. [2021-11-07 09:01:02,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 09:01:02,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:02,047 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] [2021-11-07 09:01:02,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 09:01:02,047 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:01:02,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:02,048 INFO L85 PathProgramCache]: Analyzing trace with hash 442285808, now seen corresponding path program 1 times [2021-11-07 09:01:02,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:02,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283061450] [2021-11-07 09:01:02,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:02,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:01:02,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:02,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283061450] [2021-11-07 09:01:02,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283061450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:02,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:02,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:01:02,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41113517] [2021-11-07 09:01:02,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:02,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:01:02,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:02,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:01:02,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:01:02,874 INFO L87 Difference]: Start difference. First operand 727 states and 929 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:04,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:07,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:07,276 INFO L93 Difference]: Finished difference Result 1902 states and 2408 transitions. [2021-11-07 09:01:07,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 09:01:07,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-07 09:01:07,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:07,281 INFO L225 Difference]: With dead ends: 1902 [2021-11-07 09:01:07,281 INFO L226 Difference]: Without dead ends: 1510 [2021-11-07 09:01:07,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 454.92ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:01:07,282 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 982 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3803.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.05ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4047.06ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:07,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 1479 Invalid, 455 Unknown, 0 Unchecked, 7.05ms Time], IncrementalHoareTripleChecker [17 Valid, 437 Invalid, 1 Unknown, 0 Unchecked, 4047.06ms Time] [2021-11-07 09:01:07,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2021-11-07 09:01:07,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 743. [2021-11-07 09:01:07,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 729 states have (on average 1.2962962962962963) internal successors, (945), 742 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 945 transitions. [2021-11-07 09:01:07,325 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 945 transitions. Word has length 54 [2021-11-07 09:01:07,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:07,325 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 945 transitions. [2021-11-07 09:01:07,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:07,325 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 945 transitions. [2021-11-07 09:01:07,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 09:01:07,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:07,330 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] [2021-11-07 09:01:07,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 09:01:07,330 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:01:07,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:07,331 INFO L85 PathProgramCache]: Analyzing trace with hash 369899250, now seen corresponding path program 1 times [2021-11-07 09:01:07,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:07,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451049333] [2021-11-07 09:01:07,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:07,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:01:11,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:11,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451049333] [2021-11-07 09:01:11,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451049333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:11,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:11,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 09:01:11,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358021491] [2021-11-07 09:01:11,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:11,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 09:01:11,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:11,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 09:01:11,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:01:11,873 INFO L87 Difference]: Start difference. First operand 743 states and 945 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:13,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:16,019 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:18,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:20,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:22,323 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:24,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:27,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:27,894 INFO L93 Difference]: Finished difference Result 972 states and 1225 transitions. [2021-11-07 09:01:27,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 09:01:27,895 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-07 09:01:27,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:27,897 INFO L225 Difference]: With dead ends: 972 [2021-11-07 09:01:27,897 INFO L226 Difference]: Without dead ends: 968 [2021-11-07 09:01:27,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1979.08ms TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2021-11-07 09:01:27,898 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 2301 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 97 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13982.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.49ms SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14812.19ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:27,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2301 Valid, 1297 Invalid, 615 Unknown, 0 Unchecked, 8.49ms Time], IncrementalHoareTripleChecker [97 Valid, 512 Invalid, 6 Unknown, 0 Unchecked, 14812.19ms Time] [2021-11-07 09:01:27,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-11-07 09:01:27,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 758. [2021-11-07 09:01:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 744 states have (on average 1.2983870967741935) internal successors, (966), 757 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:27,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 966 transitions. [2021-11-07 09:01:27,923 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 966 transitions. Word has length 54 [2021-11-07 09:01:27,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:27,923 INFO L470 AbstractCegarLoop]: Abstraction has 758 states and 966 transitions. [2021-11-07 09:01:27,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:27,923 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 966 transitions. [2021-11-07 09:01:27,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 09:01:27,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:27,924 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] [2021-11-07 09:01:27,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 09:01:27,924 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:01:27,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:27,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1008961932, now seen corresponding path program 1 times [2021-11-07 09:01:27,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:27,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802407276] [2021-11-07 09:01:27,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:27,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:30,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:01:30,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:30,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802407276] [2021-11-07 09:01:30,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802407276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:30,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:30,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:01:30,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204736327] [2021-11-07 09:01:30,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:30,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:01:30,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:30,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:01:30,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:01:30,559 INFO L87 Difference]: Start difference. First operand 758 states and 966 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:32,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:34,378 INFO L93 Difference]: Finished difference Result 938 states and 1191 transitions. [2021-11-07 09:01:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 09:01:34,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-11-07 09:01:34,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:34,381 INFO L225 Difference]: With dead ends: 938 [2021-11-07 09:01:34,381 INFO L226 Difference]: Without dead ends: 934 [2021-11-07 09:01:34,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 824.82ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:01:34,383 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 1062 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2987.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.24ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3178.11ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:34,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1062 Valid, 1046 Invalid, 222 Unknown, 0 Unchecked, 4.24ms Time], IncrementalHoareTripleChecker [19 Valid, 202 Invalid, 1 Unknown, 0 Unchecked, 3178.11ms Time] [2021-11-07 09:01:34,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-11-07 09:01:34,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 762. [2021-11-07 09:01:34,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 748 states have (on average 1.2967914438502675) internal successors, (970), 761 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:34,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 970 transitions. [2021-11-07 09:01:34,411 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 970 transitions. Word has length 56 [2021-11-07 09:01:34,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:34,412 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 970 transitions. [2021-11-07 09:01:34,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:34,412 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 970 transitions. [2021-11-07 09:01:34,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 09:01:34,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:34,413 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] [2021-11-07 09:01:34,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 09:01:34,413 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:01:34,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:34,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1326945049, now seen corresponding path program 1 times [2021-11-07 09:01:34,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:34,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375449374] [2021-11-07 09:01:34,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:34,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:01:35,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:35,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375449374] [2021-11-07 09:01:35,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375449374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:35,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:35,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 09:01:35,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090338550] [2021-11-07 09:01:35,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:35,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:01:35,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:35,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:01:35,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:01:35,364 INFO L87 Difference]: Start difference. First operand 762 states and 970 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:37,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:39,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:41,632 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:43,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:45,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:47,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:51,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:51,025 INFO L93 Difference]: Finished difference Result 853 states and 1070 transitions. [2021-11-07 09:01:51,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:01:51,026 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 09:01:51,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:51,028 INFO L225 Difference]: With dead ends: 853 [2021-11-07 09:01:51,028 INFO L226 Difference]: Without dead ends: 821 [2021-11-07 09:01:51,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 998.64ms TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:01:51,029 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 1587 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 16 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14241.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.81ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15014.25ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:51,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 1781 Invalid, 632 Unknown, 0 Unchecked, 9.81ms Time], IncrementalHoareTripleChecker [16 Valid, 610 Invalid, 6 Unknown, 0 Unchecked, 15014.25ms Time] [2021-11-07 09:01:51,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2021-11-07 09:01:51,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 758. [2021-11-07 09:01:51,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 744 states have (on average 1.2943548387096775) internal successors, (963), 757 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 963 transitions. [2021-11-07 09:01:51,055 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 963 transitions. Word has length 57 [2021-11-07 09:01:51,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:51,055 INFO L470 AbstractCegarLoop]: Abstraction has 758 states and 963 transitions. [2021-11-07 09:01:51,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:51,056 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 963 transitions. [2021-11-07 09:01:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 09:01:51,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:51,057 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] [2021-11-07 09:01:51,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 09:01:51,057 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:01:51,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:51,058 INFO L85 PathProgramCache]: Analyzing trace with hash 56486457, now seen corresponding path program 1 times [2021-11-07 09:01:51,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:51,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996275781] [2021-11-07 09:01:51,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:51,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:05,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:05,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996275781] [2021-11-07 09:02:05,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996275781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:05,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:05,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 09:02:05,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793319314] [2021-11-07 09:02:05,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:05,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 09:02:05,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:05,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 09:02:05,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:02:05,139 INFO L87 Difference]: Start difference. First operand 758 states and 963 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:07,185 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:09,338 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:11,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:13,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:15,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:17,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:27,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:27,717 INFO L93 Difference]: Finished difference Result 978 states and 1225 transitions. [2021-11-07 09:02:27,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 09:02:27,717 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 09:02:27,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:27,719 INFO L225 Difference]: With dead ends: 978 [2021-11-07 09:02:27,720 INFO L226 Difference]: Without dead ends: 976 [2021-11-07 09:02:27,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 5978.55ms TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:02:27,720 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 1717 mSDsluCounter, 2190 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 11 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16649.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.04ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17718.86ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:27,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1717 Valid, 2623 Invalid, 1071 Unknown, 0 Unchecked, 18.04ms Time], IncrementalHoareTripleChecker [11 Valid, 1054 Invalid, 6 Unknown, 0 Unchecked, 17718.86ms Time] [2021-11-07 09:02:27,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-11-07 09:02:27,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 762. [2021-11-07 09:02:27,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 748 states have (on average 1.2954545454545454) internal successors, (969), 761 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:27,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 969 transitions. [2021-11-07 09:02:27,743 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 969 transitions. Word has length 60 [2021-11-07 09:02:27,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:27,743 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 969 transitions. [2021-11-07 09:02:27,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:27,744 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 969 transitions. [2021-11-07 09:02:27,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 09:02:27,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:27,744 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] [2021-11-07 09:02:27,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 09:02:27,745 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:02:27,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:27,745 INFO L85 PathProgramCache]: Analyzing trace with hash 473403218, now seen corresponding path program 1 times [2021-11-07 09:02:27,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:27,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782998201] [2021-11-07 09:02:27,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:27,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:28,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:28,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:28,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782998201] [2021-11-07 09:02:28,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782998201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:28,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:28,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:02:28,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910764198] [2021-11-07 09:02:28,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:28,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:02:28,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:28,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:02:28,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:02:28,032 INFO L87 Difference]: Start difference. First operand 762 states and 969 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:30,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:30,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:30,389 INFO L93 Difference]: Finished difference Result 836 states and 1063 transitions. [2021-11-07 09:02:30,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:02:30,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 09:02:30,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:30,391 INFO L225 Difference]: With dead ends: 836 [2021-11-07 09:02:30,391 INFO L226 Difference]: Without dead ends: 799 [2021-11-07 09:02:30,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 101.54ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:02:30,392 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 567 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2151.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2280.17ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:30,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 581 Invalid, 37 Unknown, 0 Unchecked, 1.18ms Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 1 Unknown, 0 Unchecked, 2280.17ms Time] [2021-11-07 09:02:30,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2021-11-07 09:02:30,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 762. [2021-11-07 09:02:30,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 748 states have (on average 1.2914438502673797) internal successors, (966), 761 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:30,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 966 transitions. [2021-11-07 09:02:30,415 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 966 transitions. Word has length 60 [2021-11-07 09:02:30,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:30,415 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 966 transitions. [2021-11-07 09:02:30,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:30,416 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 966 transitions. [2021-11-07 09:02:30,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 09:02:30,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:30,417 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] [2021-11-07 09:02:30,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 09:02:30,417 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:02:30,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:30,418 INFO L85 PathProgramCache]: Analyzing trace with hash 817132429, now seen corresponding path program 1 times [2021-11-07 09:02:30,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:30,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540036733] [2021-11-07 09:02:30,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:30,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:30,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:30,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540036733] [2021-11-07 09:02:30,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540036733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:30,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:30,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 09:02:30,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133680336] [2021-11-07 09:02:30,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:30,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 09:02:30,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:30,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 09:02:30,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:02:30,799 INFO L87 Difference]: Start difference. First operand 762 states and 966 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:31,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:31,514 INFO L93 Difference]: Finished difference Result 1187 states and 1491 transitions. [2021-11-07 09:02:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 09:02:31,515 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-07 09:02:31,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:31,517 INFO L225 Difference]: With dead ends: 1187 [2021-11-07 09:02:31,517 INFO L226 Difference]: Without dead ends: 847 [2021-11-07 09:02:31,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 595.94ms TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-07 09:02:31,518 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 1567 mSDsluCounter, 2179 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 275.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.32ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 292.74ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:31,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1567 Valid, 2672 Invalid, 106 Unknown, 0 Unchecked, 3.32ms Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 292.74ms Time] [2021-11-07 09:02:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-11-07 09:02:31,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 762. [2021-11-07 09:02:31,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 748 states have (on average 1.2887700534759359) internal successors, (964), 761 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:31,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 964 transitions. [2021-11-07 09:02:31,541 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 964 transitions. Word has length 62 [2021-11-07 09:02:31,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:31,541 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 964 transitions. [2021-11-07 09:02:31,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:31,541 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 964 transitions. [2021-11-07 09:02:31,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 09:02:31,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:31,542 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] [2021-11-07 09:02:31,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 09:02:31,543 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:02:31,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:31,543 INFO L85 PathProgramCache]: Analyzing trace with hash 212973026, now seen corresponding path program 1 times [2021-11-07 09:02:31,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:31,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801156165] [2021-11-07 09:02:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:31,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:31,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:31,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:31,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801156165] [2021-11-07 09:02:31,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801156165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:31,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:31,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:02:31,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95523171] [2021-11-07 09:02:31,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:31,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:02:31,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:31,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:02:31,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:02:31,730 INFO L87 Difference]: Start difference. First operand 762 states and 964 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:31,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:31,802 INFO L93 Difference]: Finished difference Result 930 states and 1173 transitions. [2021-11-07 09:02:31,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:02:31,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-07 09:02:31,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:31,804 INFO L225 Difference]: With dead ends: 930 [2021-11-07 09:02:31,805 INFO L226 Difference]: Without dead ends: 831 [2021-11-07 09:02:31,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.44ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:02:31,805 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 41 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.48ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.43ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:31,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 857 Invalid, 10 Unknown, 0 Unchecked, 0.48ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 27.43ms Time] [2021-11-07 09:02:31,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2021-11-07 09:02:31,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 762. [2021-11-07 09:02:31,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 748 states have (on average 1.2887700534759359) internal successors, (964), 761 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:31,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 964 transitions. [2021-11-07 09:02:31,829 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 964 transitions. Word has length 67 [2021-11-07 09:02:31,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:31,829 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 964 transitions. [2021-11-07 09:02:31,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:31,829 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 964 transitions. [2021-11-07 09:02:31,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 09:02:31,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:31,830 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] [2021-11-07 09:02:31,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 09:02:31,830 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:02:31,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:31,831 INFO L85 PathProgramCache]: Analyzing trace with hash 644505451, now seen corresponding path program 1 times [2021-11-07 09:02:31,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:31,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403377120] [2021-11-07 09:02:31,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:31,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:32,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:32,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403377120] [2021-11-07 09:02:32,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403377120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:32,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:32,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:02:32,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513519323] [2021-11-07 09:02:32,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:32,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:02:32,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:32,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:02:32,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:02:32,190 INFO L87 Difference]: Start difference. First operand 762 states and 964 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:32,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:32,954 INFO L93 Difference]: Finished difference Result 1091 states and 1360 transitions. [2021-11-07 09:02:32,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:02:32,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 09:02:32,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:32,957 INFO L225 Difference]: With dead ends: 1091 [2021-11-07 09:02:32,957 INFO L226 Difference]: Without dead ends: 1081 [2021-11-07 09:02:32,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 161.70ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:02:32,958 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 230 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 597.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.23ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 640.30ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:32,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 1570 Invalid, 241 Unknown, 0 Unchecked, 3.23ms Time], IncrementalHoareTripleChecker [27 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 640.30ms Time] [2021-11-07 09:02:32,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2021-11-07 09:02:32,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 749. [2021-11-07 09:02:32,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 735 states have (on average 1.272108843537415) internal successors, (935), 748 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:32,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 935 transitions. [2021-11-07 09:02:32,984 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 935 transitions. Word has length 69 [2021-11-07 09:02:32,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:32,984 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 935 transitions. [2021-11-07 09:02:32,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:32,984 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 935 transitions. [2021-11-07 09:02:32,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 09:02:32,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:32,985 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] [2021-11-07 09:02:32,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 09:02:32,986 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:02:32,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:32,986 INFO L85 PathProgramCache]: Analyzing trace with hash -730181435, now seen corresponding path program 1 times [2021-11-07 09:02:32,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:32,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316146445] [2021-11-07 09:02:32,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:32,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:36,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:36,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:36,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316146445] [2021-11-07 09:02:36,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316146445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:36,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:36,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:02:36,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942425101] [2021-11-07 09:02:36,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:36,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:02:36,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:36,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:02:36,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:02:36,713 INFO L87 Difference]: Start difference. First operand 749 states and 935 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:38,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:40,755 INFO L93 Difference]: Finished difference Result 1003 states and 1222 transitions. [2021-11-07 09:02:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 09:02:40,757 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 09:02:40,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:40,759 INFO L225 Difference]: With dead ends: 1003 [2021-11-07 09:02:40,759 INFO L226 Difference]: Without dead ends: 989 [2021-11-07 09:02:40,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 538.99ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:02:40,759 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 1130 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3524.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.36ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3720.45ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:40,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1130 Valid, 1292 Invalid, 486 Unknown, 0 Unchecked, 4.36ms Time], IncrementalHoareTripleChecker [32 Valid, 453 Invalid, 1 Unknown, 0 Unchecked, 3720.45ms Time] [2021-11-07 09:02:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2021-11-07 09:02:40,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 778. [2021-11-07 09:02:40,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 764 states have (on average 1.2761780104712042) internal successors, (975), 777 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 975 transitions. [2021-11-07 09:02:40,787 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 975 transitions. Word has length 70 [2021-11-07 09:02:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:40,787 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 975 transitions. [2021-11-07 09:02:40,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:40,787 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 975 transitions. [2021-11-07 09:02:40,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 09:02:40,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:40,788 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] [2021-11-07 09:02:40,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 09:02:40,789 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:02:40,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:40,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1873610241, now seen corresponding path program 1 times [2021-11-07 09:02:40,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:40,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755258525] [2021-11-07 09:02:40,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:40,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:40,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:40,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:40,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755258525] [2021-11-07 09:02:40,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755258525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:40,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:40,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:02:40,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205158365] [2021-11-07 09:02:40,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:40,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:02:40,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:40,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:02:40,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:02:40,948 INFO L87 Difference]: Start difference. First operand 778 states and 975 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:41,259 INFO L93 Difference]: Finished difference Result 1617 states and 1991 transitions. [2021-11-07 09:02:41,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:02:41,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 09:02:41,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:41,261 INFO L225 Difference]: With dead ends: 1617 [2021-11-07 09:02:41,261 INFO L226 Difference]: Without dead ends: 881 [2021-11-07 09:02:41,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.29ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:02:41,263 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 166 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 237.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 257.37ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:41,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 760 Invalid, 110 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [19 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 257.37ms Time] [2021-11-07 09:02:41,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2021-11-07 09:02:41,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 750. [2021-11-07 09:02:41,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 736 states have (on average 1.2445652173913044) internal successors, (916), 749 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:41,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 916 transitions. [2021-11-07 09:02:41,318 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 916 transitions. Word has length 70 [2021-11-07 09:02:41,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:41,318 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 916 transitions. [2021-11-07 09:02:41,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:41,319 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 916 transitions. [2021-11-07 09:02:41,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 09:02:41,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:41,320 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] [2021-11-07 09:02:41,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 09:02:41,320 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:02:41,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:41,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2131775679, now seen corresponding path program 1 times [2021-11-07 09:02:41,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:41,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135726839] [2021-11-07 09:02:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:41,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:42,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:42,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:42,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135726839] [2021-11-07 09:02:42,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135726839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:42,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:42,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 09:02:42,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356470179] [2021-11-07 09:02:42,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:42,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:02:42,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:42,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:02:42,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:02:42,070 INFO L87 Difference]: Start difference. First operand 750 states and 916 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:44,117 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:46,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:48,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:50,374 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:52,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:52,837 INFO L93 Difference]: Finished difference Result 796 states and 961 transitions. [2021-11-07 09:02:52,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 09:02:52,837 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 09:02:52,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:52,839 INFO L225 Difference]: With dead ends: 796 [2021-11-07 09:02:52,840 INFO L226 Difference]: Without dead ends: 789 [2021-11-07 09:02:52,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 899.56ms TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:02:52,840 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 1061 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 14 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9625.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.47ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10118.87ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:52,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 1521 Invalid, 508 Unknown, 0 Unchecked, 5.47ms Time], IncrementalHoareTripleChecker [14 Valid, 490 Invalid, 4 Unknown, 0 Unchecked, 10118.87ms Time] [2021-11-07 09:02:52,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-11-07 09:02:52,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 757. [2021-11-07 09:02:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 743 states have (on average 1.243606998654105) internal successors, (924), 756 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:52,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 924 transitions. [2021-11-07 09:02:52,869 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 924 transitions. Word has length 70 [2021-11-07 09:02:52,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:52,869 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 924 transitions. [2021-11-07 09:02:52,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 924 transitions. [2021-11-07 09:02:52,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 09:02:52,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:52,871 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] [2021-11-07 09:02:52,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 09:02:52,871 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:02:52,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:52,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1483133247, now seen corresponding path program 1 times [2021-11-07 09:02:52,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:52,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577392358] [2021-11-07 09:02:52,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:52,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:53,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:53,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577392358] [2021-11-07 09:02:53,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577392358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:53,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:53,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:02:53,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149692607] [2021-11-07 09:02:53,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:53,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:02:53,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:53,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:02:53,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:02:53,230 INFO L87 Difference]: Start difference. First operand 757 states and 924 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:55,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:56,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:56,431 INFO L93 Difference]: Finished difference Result 1668 states and 2025 transitions. [2021-11-07 09:02:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:02:56,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 09:02:56,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:56,434 INFO L225 Difference]: With dead ends: 1668 [2021-11-07 09:02:56,434 INFO L226 Difference]: Without dead ends: 1091 [2021-11-07 09:02:56,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 101.06ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:02:56,435 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 423 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2881.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.49ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3114.85ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:56,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 812 Invalid, 250 Unknown, 0 Unchecked, 3.49ms Time], IncrementalHoareTripleChecker [30 Valid, 219 Invalid, 1 Unknown, 0 Unchecked, 3114.85ms Time] [2021-11-07 09:02:56,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2021-11-07 09:02:56,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 757. [2021-11-07 09:02:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 743 states have (on average 1.2274562584118438) internal successors, (912), 756 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 912 transitions. [2021-11-07 09:02:56,464 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 912 transitions. Word has length 70 [2021-11-07 09:02:56,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:56,464 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 912 transitions. [2021-11-07 09:02:56,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:56,464 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 912 transitions. [2021-11-07 09:02:56,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 09:02:56,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:56,465 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] [2021-11-07 09:02:56,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 09:02:56,466 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:02:56,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:56,466 INFO L85 PathProgramCache]: Analyzing trace with hash -2116802981, now seen corresponding path program 1 times [2021-11-07 09:02:56,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:56,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762045125] [2021-11-07 09:02:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:56,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:56,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:56,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:56,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762045125] [2021-11-07 09:02:56,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762045125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:56,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:56,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:02:56,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325155872] [2021-11-07 09:02:56,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:56,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:02:56,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:56,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:02:56,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:02:56,651 INFO L87 Difference]: Start difference. First operand 757 states and 912 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:56,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:56,755 INFO L93 Difference]: Finished difference Result 1478 states and 1781 transitions. [2021-11-07 09:02:56,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:02:56,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 09:02:56,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:56,758 INFO L225 Difference]: With dead ends: 1478 [2021-11-07 09:02:56,758 INFO L226 Difference]: Without dead ends: 977 [2021-11-07 09:02:56,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.17ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:02:56,760 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 115 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.86ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:56,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 847 Invalid, 13 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 39.86ms Time] [2021-11-07 09:02:56,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-11-07 09:02:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 895. [2021-11-07 09:02:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 881 states have (on average 1.2304199772985245) internal successors, (1084), 894 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1084 transitions. [2021-11-07 09:02:56,791 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1084 transitions. Word has length 70 [2021-11-07 09:02:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:56,791 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 1084 transitions. [2021-11-07 09:02:56,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1084 transitions. [2021-11-07 09:02:56,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 09:02:56,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:56,793 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] [2021-11-07 09:02:56,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-07 09:02:56,793 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:02:56,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:56,793 INFO L85 PathProgramCache]: Analyzing trace with hash -271435815, now seen corresponding path program 1 times [2021-11-07 09:02:56,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:56,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370018707] [2021-11-07 09:02:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:56,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:57,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:57,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:57,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370018707] [2021-11-07 09:02:57,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370018707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:57,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:57,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:02:57,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496248973] [2021-11-07 09:02:57,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:57,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:02:57,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:57,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:02:57,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:02:57,042 INFO L87 Difference]: Start difference. First operand 895 states and 1084 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:57,204 INFO L93 Difference]: Finished difference Result 1065 states and 1268 transitions. [2021-11-07 09:02:57,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:02:57,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 09:02:57,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:57,207 INFO L225 Difference]: With dead ends: 1065 [2021-11-07 09:02:57,207 INFO L226 Difference]: Without dead ends: 813 [2021-11-07 09:02:57,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 116.53ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:02:57,208 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 163 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.38ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:57,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1115 Invalid, 30 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 94.38ms Time] [2021-11-07 09:02:57,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-11-07 09:02:57,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 653. [2021-11-07 09:02:57,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 639 states have (on average 1.2284820031298904) internal successors, (785), 652 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:57,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 785 transitions. [2021-11-07 09:02:57,252 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 785 transitions. Word has length 70 [2021-11-07 09:02:57,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:57,252 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 785 transitions. [2021-11-07 09:02:57,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:57,253 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 785 transitions. [2021-11-07 09:02:57,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 09:02:57,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:57,253 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] [2021-11-07 09:02:57,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-07 09:02:57,254 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:02:57,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:57,254 INFO L85 PathProgramCache]: Analyzing trace with hash 244787672, now seen corresponding path program 1 times [2021-11-07 09:02:57,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:57,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167085503] [2021-11-07 09:02:57,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:57,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:57,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:57,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167085503] [2021-11-07 09:02:57,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167085503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:57,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:57,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:02:57,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140263393] [2021-11-07 09:02:57,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:57,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:02:57,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:57,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:02:57,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:02:57,877 INFO L87 Difference]: Start difference. First operand 653 states and 785 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:59,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:02,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:04,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:06,318 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:08,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:03:08,760 INFO L93 Difference]: Finished difference Result 733 states and 860 transitions. [2021-11-07 09:03:08,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 09:03:08,761 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 09:03:08,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:03:08,763 INFO L225 Difference]: With dead ends: 733 [2021-11-07 09:03:08,763 INFO L226 Difference]: Without dead ends: 725 [2021-11-07 09:03:08,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 724.50ms TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-11-07 09:03:08,764 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 1503 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 17 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9702.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.57ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10309.45ms IncrementalHoareTripleChecker+Time [2021-11-07 09:03:08,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1503 Valid, 1358 Invalid, 449 Unknown, 0 Unchecked, 7.57ms Time], IncrementalHoareTripleChecker [17 Valid, 428 Invalid, 4 Unknown, 0 Unchecked, 10309.45ms Time] [2021-11-07 09:03:08,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-11-07 09:03:08,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 654. [2021-11-07 09:03:08,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 640 states have (on average 1.228125) internal successors, (786), 653 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:08,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 786 transitions. [2021-11-07 09:03:08,787 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 786 transitions. Word has length 72 [2021-11-07 09:03:08,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:03:08,788 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 786 transitions. [2021-11-07 09:03:08,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:08,788 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 786 transitions. [2021-11-07 09:03:08,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 09:03:08,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:03:08,789 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] [2021-11-07 09:03:08,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-07 09:03:08,789 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:03:08,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:03:08,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1054134298, now seen corresponding path program 1 times [2021-11-07 09:03:08,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:03:08,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483851272] [2021-11-07 09:03:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:03:08,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:03:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:03:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:03:09,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:03:09,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483851272] [2021-11-07 09:03:09,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483851272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:03:09,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:03:09,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:03:09,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459743870] [2021-11-07 09:03:09,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:03:09,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:03:09,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:03:09,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:03:09,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:03:09,228 INFO L87 Difference]: Start difference. First operand 654 states and 786 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:10,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:03:10,480 INFO L93 Difference]: Finished difference Result 986 states and 1175 transitions. [2021-11-07 09:03:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 09:03:10,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 09:03:10,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:03:10,482 INFO L225 Difference]: With dead ends: 986 [2021-11-07 09:03:10,483 INFO L226 Difference]: Without dead ends: 817 [2021-11-07 09:03:10,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 353.76ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:03:10,484 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 264 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 954.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.31ms SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1011.88ms IncrementalHoareTripleChecker+Time [2021-11-07 09:03:10,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 1979 Invalid, 456 Unknown, 0 Unchecked, 3.31ms Time], IncrementalHoareTripleChecker [75 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 1011.88ms Time] [2021-11-07 09:03:10,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-11-07 09:03:10,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 556. [2021-11-07 09:03:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 542 states have (on average 1.2177121771217712) internal successors, (660), 555 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 660 transitions. [2021-11-07 09:03:10,508 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 660 transitions. Word has length 72 [2021-11-07 09:03:10,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:03:10,508 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 660 transitions. [2021-11-07 09:03:10,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:10,508 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 660 transitions. [2021-11-07 09:03:10,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 09:03:10,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:03:10,509 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] [2021-11-07 09:03:10,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-07 09:03:10,510 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:03:10,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:03:10,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1563594149, now seen corresponding path program 1 times [2021-11-07 09:03:10,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:03:10,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340218087] [2021-11-07 09:03:10,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:03:10,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:03:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:03:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:03:11,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:03:11,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340218087] [2021-11-07 09:03:11,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340218087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:03:11,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:03:11,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 09:03:11,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560077178] [2021-11-07 09:03:11,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:03:11,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 09:03:11,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:03:11,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 09:03:11,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:03:11,462 INFO L87 Difference]: Start difference. First operand 556 states and 660 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:13,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:15,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:17,832 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:19,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:22,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:03:22,619 INFO L93 Difference]: Finished difference Result 675 states and 783 transitions. [2021-11-07 09:03:22,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:03:22,620 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 09:03:22,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:03:22,621 INFO L225 Difference]: With dead ends: 675 [2021-11-07 09:03:22,621 INFO L226 Difference]: Without dead ends: 649 [2021-11-07 09:03:22,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 726.91ms TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-11-07 09:03:22,622 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 1686 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 30 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10186.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1686 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.98ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10734.37ms IncrementalHoareTripleChecker+Time [2021-11-07 09:03:22,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1686 Valid, 1655 Invalid, 555 Unknown, 0 Unchecked, 7.98ms Time], IncrementalHoareTripleChecker [30 Valid, 521 Invalid, 4 Unknown, 0 Unchecked, 10734.37ms Time] [2021-11-07 09:03:22,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-11-07 09:03:22,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 556. [2021-11-07 09:03:22,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 542 states have (on average 1.2158671586715868) internal successors, (659), 555 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:22,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 659 transitions. [2021-11-07 09:03:22,642 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 659 transitions. Word has length 73 [2021-11-07 09:03:22,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:03:22,642 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 659 transitions. [2021-11-07 09:03:22,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:22,643 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 659 transitions. [2021-11-07 09:03:22,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 09:03:22,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:03:22,643 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] [2021-11-07 09:03:22,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-07 09:03:22,644 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:03:22,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:03:22,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1576862795, now seen corresponding path program 1 times [2021-11-07 09:03:22,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:03:22,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907894013] [2021-11-07 09:03:22,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:03:22,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:03:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:03:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:03:23,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:03:23,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907894013] [2021-11-07 09:03:23,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907894013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:03:23,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:03:23,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:03:23,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646668546] [2021-11-07 09:03:23,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:03:23,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:03:23,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:03:23,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:03:23,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:03:23,391 INFO L87 Difference]: Start difference. First operand 556 states and 659 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:25,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:27,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:29,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:31,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:03:31,887 INFO L93 Difference]: Finished difference Result 715 states and 821 transitions. [2021-11-07 09:03:31,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 09:03:31,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-07 09:03:31,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:03:31,900 INFO L225 Difference]: With dead ends: 715 [2021-11-07 09:03:31,900 INFO L226 Difference]: Without dead ends: 703 [2021-11-07 09:03:31,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 481.09ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-11-07 09:03:31,901 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 278 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7513.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.22ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8095.34ms IncrementalHoareTripleChecker+Time [2021-11-07 09:03:31,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 1791 Invalid, 508 Unknown, 0 Unchecked, 5.22ms Time], IncrementalHoareTripleChecker [18 Valid, 487 Invalid, 3 Unknown, 0 Unchecked, 8095.34ms Time] [2021-11-07 09:03:31,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-11-07 09:03:31,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 561. [2021-11-07 09:03:31,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 547 states have (on average 1.2157221206581352) internal successors, (665), 560 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 665 transitions. [2021-11-07 09:03:31,940 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 665 transitions. Word has length 75 [2021-11-07 09:03:31,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:03:31,940 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 665 transitions. [2021-11-07 09:03:31,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:31,941 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 665 transitions. [2021-11-07 09:03:31,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 09:03:31,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:03:31,941 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] [2021-11-07 09:03:31,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-07 09:03:31,941 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:03:31,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:03:31,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1318697357, now seen corresponding path program 1 times [2021-11-07 09:03:31,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:03:31,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443482337] [2021-11-07 09:03:31,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:03:31,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:03:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:03:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:03:34,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:03:34,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443482337] [2021-11-07 09:03:34,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443482337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:03:34,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:03:34,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 09:03:34,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857825663] [2021-11-07 09:03:34,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:03:34,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:03:34,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:03:34,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:03:34,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:03:34,808 INFO L87 Difference]: Start difference. First operand 561 states and 665 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:36,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:38,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:41,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:43,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:45,280 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:47,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:49,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:03:51,664 INFO L93 Difference]: Finished difference Result 681 states and 787 transitions. [2021-11-07 09:03:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:03:51,664 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-07 09:03:51,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:03:51,666 INFO L225 Difference]: With dead ends: 681 [2021-11-07 09:03:51,666 INFO L226 Difference]: Without dead ends: 654 [2021-11-07 09:03:51,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 826.92ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-11-07 09:03:51,666 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 1082 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 17 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15587.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.34ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16415.11ms IncrementalHoareTripleChecker+Time [2021-11-07 09:03:51,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 2090 Invalid, 359 Unknown, 0 Unchecked, 4.34ms Time], IncrementalHoareTripleChecker [17 Valid, 335 Invalid, 7 Unknown, 0 Unchecked, 16415.11ms Time] [2021-11-07 09:03:51,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-11-07 09:03:51,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 561. [2021-11-07 09:03:51,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 547 states have (on average 1.2138939670932358) internal successors, (664), 560 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:51,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 664 transitions. [2021-11-07 09:03:51,686 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 664 transitions. Word has length 75 [2021-11-07 09:03:51,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:03:51,687 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 664 transitions. [2021-11-07 09:03:51,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:51,687 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 664 transitions. [2021-11-07 09:03:51,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 09:03:51,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:03:51,688 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] [2021-11-07 09:03:51,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-07 09:03:51,688 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:03:51,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:03:51,688 INFO L85 PathProgramCache]: Analyzing trace with hash 716704572, now seen corresponding path program 1 times [2021-11-07 09:03:51,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:03:51,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559465795] [2021-11-07 09:03:51,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:03:51,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:03:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:03:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:03:56,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:03:56,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559465795] [2021-11-07 09:03:56,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559465795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:03:56,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:03:56,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-07 09:03:56,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250298930] [2021-11-07 09:03:56,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:03:56,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 09:03:56,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:03:56,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 09:03:56,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:03:56,725 INFO L87 Difference]: Start difference. First operand 561 states and 664 transitions. Second operand has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 18 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:58,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:00,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:02,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:05,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:07,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:09,365 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:17,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:04:17,038 INFO L93 Difference]: Finished difference Result 727 states and 832 transitions. [2021-11-07 09:04:17,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 09:04:17,038 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 18 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-07 09:04:17,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:04:17,039 INFO L225 Difference]: With dead ends: 727 [2021-11-07 09:04:17,039 INFO L226 Difference]: Without dead ends: 713 [2021-11-07 09:04:17,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4459.70ms TimeCoverageRelationStatistics Valid=392, Invalid=1248, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 09:04:17,040 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 2532 mSDsluCounter, 2573 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 59 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15770.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2532 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.61ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16747.73ms IncrementalHoareTripleChecker+Time [2021-11-07 09:04:17,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2532 Valid, 2847 Invalid, 1118 Unknown, 0 Unchecked, 15.61ms Time], IncrementalHoareTripleChecker [59 Valid, 1053 Invalid, 6 Unknown, 0 Unchecked, 16747.73ms Time] [2021-11-07 09:04:17,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-07 09:04:17,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 566. [2021-11-07 09:04:17,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 552 states have (on average 1.2119565217391304) internal successors, (669), 565 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:17,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 669 transitions. [2021-11-07 09:04:17,084 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 669 transitions. Word has length 77 [2021-11-07 09:04:17,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:04:17,085 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 669 transitions. [2021-11-07 09:04:17,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 18 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:17,085 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 669 transitions. [2021-11-07 09:04:17,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 09:04:17,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:04:17,086 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] [2021-11-07 09:04:17,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-07 09:04:17,087 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:04:17,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:04:17,087 INFO L85 PathProgramCache]: Analyzing trace with hash -974471048, now seen corresponding path program 1 times [2021-11-07 09:04:17,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:04:17,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715610949] [2021-11-07 09:04:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:04:17,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:04:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:04:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:04:23,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:04:23,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715610949] [2021-11-07 09:04:23,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715610949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:04:23,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:04:23,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-07 09:04:23,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505170874] [2021-11-07 09:04:23,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:04:23,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 09:04:23,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:04:23,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 09:04:23,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2021-11-07 09:04:23,864 INFO L87 Difference]: Start difference. First operand 566 states and 669 transitions. Second operand has 24 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 24 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:25,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:28,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:30,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:32,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:34,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:36,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:38,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:40,798 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:42,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:45,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:47,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:56,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:04,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:05:04,077 INFO L93 Difference]: Finished difference Result 725 states and 842 transitions. [2021-11-07 09:05:04,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 09:05:04,077 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 24 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-07 09:05:04,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:05:04,078 INFO L225 Difference]: With dead ends: 725 [2021-11-07 09:05:04,078 INFO L226 Difference]: Without dead ends: 718 [2021-11-07 09:05:04,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 9742.48ms TimeCoverageRelationStatistics Valid=551, Invalid=1801, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 09:05:04,080 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 2099 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 125 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30311.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2099 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.06ms SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32048.58ms IncrementalHoareTripleChecker+Time [2021-11-07 09:05:04,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2099 Valid, 2788 Invalid, 1311 Unknown, 0 Unchecked, 16.06ms Time], IncrementalHoareTripleChecker [125 Valid, 1174 Invalid, 12 Unknown, 0 Unchecked, 32048.58ms Time] [2021-11-07 09:05:04,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-11-07 09:05:04,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 587. [2021-11-07 09:05:04,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 573 states have (on average 1.2146596858638743) internal successors, (696), 586 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 696 transitions. [2021-11-07 09:05:04,107 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 696 transitions. Word has length 77 [2021-11-07 09:05:04,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:05:04,107 INFO L470 AbstractCegarLoop]: Abstraction has 587 states and 696 transitions. [2021-11-07 09:05:04,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 24 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:04,107 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 696 transitions. [2021-11-07 09:05:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 09:05:04,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:05:04,108 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] [2021-11-07 09:05:04,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-07 09:05:04,108 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:05:04,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:05:04,109 INFO L85 PathProgramCache]: Analyzing trace with hash 143953745, now seen corresponding path program 1 times [2021-11-07 09:05:04,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:05:04,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418343162] [2021-11-07 09:05:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:05:04,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:05:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:05:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:05:06,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:05:06,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418343162] [2021-11-07 09:05:06,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418343162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:05:06,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:05:06,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 09:05:06,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823467650] [2021-11-07 09:05:06,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:05:06,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 09:05:06,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:05:06,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 09:05:06,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:05:06,740 INFO L87 Difference]: Start difference. First operand 587 states and 696 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:08,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:11,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:15,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:05:15,723 INFO L93 Difference]: Finished difference Result 949 states and 1107 transitions. [2021-11-07 09:05:15,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 09:05:15,724 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 09:05:15,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:05:15,725 INFO L225 Difference]: With dead ends: 949 [2021-11-07 09:05:15,725 INFO L226 Difference]: Without dead ends: 764 [2021-11-07 09:05:15,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 2077.51ms TimeCoverageRelationStatistics Valid=280, Invalid=1052, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 09:05:15,726 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 638 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 95 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6799.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 3338 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.40ms SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7255.90ms IncrementalHoareTripleChecker+Time [2021-11-07 09:05:15,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 3338 Invalid, 1178 Unknown, 0 Unchecked, 10.40ms Time], IncrementalHoareTripleChecker [95 Valid, 1081 Invalid, 2 Unknown, 0 Unchecked, 7255.90ms Time] [2021-11-07 09:05:15,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-11-07 09:05:15,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 476. [2021-11-07 09:05:15,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 462 states have (on average 1.2186147186147187) internal successors, (563), 475 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:15,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 563 transitions. [2021-11-07 09:05:15,750 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 563 transitions. Word has length 79 [2021-11-07 09:05:15,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:05:15,750 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 563 transitions. [2021-11-07 09:05:15,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:15,751 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 563 transitions. [2021-11-07 09:05:15,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 09:05:15,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:05:15,751 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] [2021-11-07 09:05:15,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-07 09:05:15,752 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:05:15,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:05:15,752 INFO L85 PathProgramCache]: Analyzing trace with hash -681962612, now seen corresponding path program 1 times [2021-11-07 09:05:15,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:05:15,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470364508] [2021-11-07 09:05:15,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:05:15,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:05:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:05:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:05:15,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:05:15,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470364508] [2021-11-07 09:05:15,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470364508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:05:15,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:05:15,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:05:15,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738935836] [2021-11-07 09:05:15,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:05:15,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:05:15,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:05:15,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:05:15,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:05:15,919 INFO L87 Difference]: Start difference. First operand 476 states and 563 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:16,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:05:16,077 INFO L93 Difference]: Finished difference Result 842 states and 998 transitions. [2021-11-07 09:05:16,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:05:16,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-07 09:05:16,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:05:16,079 INFO L225 Difference]: With dead ends: 842 [2021-11-07 09:05:16,079 INFO L226 Difference]: Without dead ends: 476 [2021-11-07 09:05:16,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.68ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:05:16,080 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 393 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.68ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.15ms IncrementalHoareTripleChecker+Time [2021-11-07 09:05:16,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 661 Invalid, 41 Unknown, 0 Unchecked, 0.68ms Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 94.15ms Time] [2021-11-07 09:05:16,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-07 09:05:16,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2021-11-07 09:05:16,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 462 states have (on average 1.2142857142857142) internal successors, (561), 475 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 561 transitions. [2021-11-07 09:05:16,106 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 561 transitions. Word has length 86 [2021-11-07 09:05:16,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:05:16,106 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 561 transitions. [2021-11-07 09:05:16,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 561 transitions. [2021-11-07 09:05:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 09:05:16,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:05:16,107 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] [2021-11-07 09:05:16,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-07 09:05:16,107 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:05:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:05:16,108 INFO L85 PathProgramCache]: Analyzing trace with hash -680018267, now seen corresponding path program 1 times [2021-11-07 09:05:16,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:05:16,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104103924] [2021-11-07 09:05:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:05:16,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:05:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:05:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:05:16,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:05:16,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104103924] [2021-11-07 09:05:16,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104103924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:05:16,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:05:16,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:05:16,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189514079] [2021-11-07 09:05:16,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:05:16,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:05:16,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:05:16,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:05:16,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:05:16,289 INFO L87 Difference]: Start difference. First operand 476 states and 561 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:16,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:05:16,676 INFO L93 Difference]: Finished difference Result 846 states and 1000 transitions. [2021-11-07 09:05:16,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 09:05:16,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-07 09:05:16,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:05:16,678 INFO L225 Difference]: With dead ends: 846 [2021-11-07 09:05:16,678 INFO L226 Difference]: Without dead ends: 476 [2021-11-07 09:05:16,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 218.30ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:05:16,678 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 692 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 185.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 196.82ms IncrementalHoareTripleChecker+Time [2021-11-07 09:05:16,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 605 Invalid, 73 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 196.82ms Time] [2021-11-07 09:05:16,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-07 09:05:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2021-11-07 09:05:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 462 states have (on average 1.20995670995671) internal successors, (559), 475 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 559 transitions. [2021-11-07 09:05:16,702 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 559 transitions. Word has length 89 [2021-11-07 09:05:16,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:05:16,702 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 559 transitions. [2021-11-07 09:05:16,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:16,703 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 559 transitions. [2021-11-07 09:05:16,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 09:05:16,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:05:16,703 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] [2021-11-07 09:05:16,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-07 09:05:16,704 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:05:16,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:05:16,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1771865232, now seen corresponding path program 1 times [2021-11-07 09:05:16,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:05:16,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348070888] [2021-11-07 09:05:16,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:05:16,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:05:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:05:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:05:16,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:05:16,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348070888] [2021-11-07 09:05:16,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348070888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:05:16,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:05:16,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:05:16,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714601078] [2021-11-07 09:05:16,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:05:16,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:05:16,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:05:16,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:05:16,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:05:16,999 INFO L87 Difference]: Start difference. First operand 476 states and 559 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:17,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:05:17,448 INFO L93 Difference]: Finished difference Result 663 states and 779 transitions. [2021-11-07 09:05:17,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:05:17,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-07 09:05:17,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:05:17,449 INFO L225 Difference]: With dead ends: 663 [2021-11-07 09:05:17,449 INFO L226 Difference]: Without dead ends: 476 [2021-11-07 09:05:17,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 314.18ms TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:05:17,450 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 821 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 192.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 203.11ms IncrementalHoareTripleChecker+Time [2021-11-07 09:05:17,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [821 Valid, 683 Invalid, 90 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [9 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 203.11ms Time] [2021-11-07 09:05:17,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-07 09:05:17,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2021-11-07 09:05:17,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 462 states have (on average 1.2034632034632036) internal successors, (556), 475 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:17,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 556 transitions. [2021-11-07 09:05:17,471 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 556 transitions. Word has length 95 [2021-11-07 09:05:17,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:05:17,472 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 556 transitions. [2021-11-07 09:05:17,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:17,472 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 556 transitions. [2021-11-07 09:05:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 09:05:17,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:05:17,473 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] [2021-11-07 09:05:17,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-07 09:05:17,473 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 09:05:17,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:05:17,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1416890495, now seen corresponding path program 1 times [2021-11-07 09:05:17,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:05:17,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80515179] [2021-11-07 09:05:17,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:05:17,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:05:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:05:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:05:18,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:05:18,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80515179] [2021-11-07 09:05:18,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80515179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:05:18,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:05:18,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:05:18,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023540796] [2021-11-07 09:05:18,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:05:18,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:05:18,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:05:18,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:05:18,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:05:18,130 INFO L87 Difference]: Start difference. First operand 476 states and 556 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:18,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:05:18,284 INFO L93 Difference]: Finished difference Result 476 states and 556 transitions. [2021-11-07 09:05:18,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:05:18,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-11-07 09:05:18,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:05:18,285 INFO L225 Difference]: With dead ends: 476 [2021-11-07 09:05:18,285 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 09:05:18,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 260.39ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:05:18,286 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.26ms IncrementalHoareTripleChecker+Time [2021-11-07 09:05:18,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 7 Unknown, 0 Unchecked, 0.04ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 24.26ms Time] [2021-11-07 09:05:18,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 09:05:18,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 09:05:18,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 09:05:18,287 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 105 [2021-11-07 09:05:18,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:05:18,287 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 09:05:18,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:18,287 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 09:05:18,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 09:05:18,289 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (14 of 15 remaining) [2021-11-07 09:05:18,289 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (13 of 15 remaining) [2021-11-07 09:05:18,289 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (12 of 15 remaining) [2021-11-07 09:05:18,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (11 of 15 remaining) [2021-11-07 09:05:18,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (10 of 15 remaining) [2021-11-07 09:05:18,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (9 of 15 remaining) [2021-11-07 09:05:18,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (8 of 15 remaining) [2021-11-07 09:05:18,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (7 of 15 remaining) [2021-11-07 09:05:18,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (6 of 15 remaining) [2021-11-07 09:05:18,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (5 of 15 remaining) [2021-11-07 09:05:18,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (4 of 15 remaining) [2021-11-07 09:05:18,291 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (3 of 15 remaining) [2021-11-07 09:05:18,291 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (2 of 15 remaining) [2021-11-07 09:05:18,291 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (1 of 15 remaining) [2021-11-07 09:05:18,291 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION (0 of 15 remaining) [2021-11-07 09:05:18,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-07 09:05:18,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 09:06:26,036 WARN L227 SmtUtils]: Spent 1.13m on a formula simplification. DAG size of input: 401 DAG size of output: 399 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Killed by 15