./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_buffer_harness-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 08:58:54,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:58:54,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:58:54,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:58:54,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:58:54,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:58:54,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:58:54,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:58:54,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:58:54,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:58:54,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:58:54,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:58:54,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:58:54,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:58:54,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:58:54,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:58:54,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:58:54,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:58:54,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:58:54,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:58:54,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:58:54,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:58:54,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:58:54,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:58:54,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:58:54,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:58:54,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:58:54,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:58:54,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:58:54,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:58:54,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:58:54,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:58:54,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:58:54,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:58:54,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:58:54,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:58:54,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:58:54,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:58:54,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:58:54,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:58:54,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:58:54,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 08:58:54,893 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:58:54,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:58:54,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:58:54,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:58:54,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:58:54,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:58:54,896 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:58:54,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:58:54,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:58:54,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:58:54,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:58:54,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:58:54,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:58:54,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:58:54,898 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:58:54,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:58:54,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:58:54,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:58:54,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:58:54,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:58:54,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:58:54,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:58:54,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:58:54,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:58:54,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:58:54,900 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:58:54,900 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:58:54,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:58:54,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:58:54,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb [2021-11-07 08:58:55,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:58:55,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:58:55,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:58:55,135 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:58:55,136 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:58:55,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-07 08:58:55,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2949b1a/a28294c05fc643b38451d24a1d36bace/FLAG39888de8c [2021-11-07 08:58:55,851 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:58:55,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-07 08:58:55,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2949b1a/a28294c05fc643b38451d24a1d36bace/FLAG39888de8c [2021-11-07 08:58:56,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2949b1a/a28294c05fc643b38451d24a1d36bace [2021-11-07 08:58:56,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:58:56,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:58:56,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:58:56,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:58:56,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:58:56,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:58:56" (1/1) ... [2021-11-07 08:58:56,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf4146b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:56, skipping insertion in model container [2021-11-07 08:58:56,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:58:56" (1/1) ... [2021-11-07 08:58:56,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:58:56,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:58:56,553 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2021-11-07 08:58:56,558 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2021-11-07 08:58:56,578 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:58:56,584 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 08:58:57,169 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,170 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,171 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,171 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,172 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,182 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,183 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,185 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,190 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,413 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 08:58:57,414 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 08:58:57,415 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 08:58:57,416 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 08:58:57,417 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 08:58:57,417 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 08:58:57,418 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 08:58:57,418 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 08:58:57,419 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 08:58:57,419 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 08:58:57,532 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 08:58:57,602 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,610 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:58:57,806 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:58:57,827 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2021-11-07 08:58:57,829 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2021-11-07 08:58:57,831 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:58:57,831 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 08:58:57,863 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,864 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,864 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,864 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,866 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,879 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,880 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,880 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,881 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,917 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 08:58:57,920 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 08:58:57,920 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 08:58:57,921 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 08:58:57,922 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 08:58:57,922 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 08:58:57,922 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 08:58:57,923 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 08:58:57,923 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 08:58:57,927 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 08:58:57,941 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 08:58:57,976 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:57,976 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:58:58,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:58:58,167 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:58:58,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:58 WrapperNode [2021-11-07 08:58:58,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:58:58,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:58:58,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:58:58,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:58:58,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:58" (1/1) ... [2021-11-07 08:58:58,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:58" (1/1) ... [2021-11-07 08:58:58,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:58:58,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:58:58,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:58:58,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:58:58,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:58" (1/1) ... [2021-11-07 08:58:58,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:58" (1/1) ... [2021-11-07 08:58:58,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:58" (1/1) ... [2021-11-07 08:58:58,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:58" (1/1) ... [2021-11-07 08:58:58,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:58" (1/1) ... [2021-11-07 08:58:58,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:58" (1/1) ... [2021-11-07 08:58:58,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:58" (1/1) ... [2021-11-07 08:58:58,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:58:58,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:58:58,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:58:58,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:58:58,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:58" (1/1) ... [2021-11-07 08:58:58,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:58:58,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 08:58:58,532 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 08:58:58,556 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 08:58:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:58:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:58:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:58:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:58:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:58:58,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:58:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:58:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:58:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:58:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:58:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:59:07,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:59:07,538 INFO L299 CfgBuilder]: Removed 151 assume(true) statements. [2021-11-07 08:59:07,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:59:07 BoogieIcfgContainer [2021-11-07 08:59:07,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:59:07,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:59:07,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:59:07,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:59:07,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:58:56" (1/3) ... [2021-11-07 08:59:07,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b4c278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:59:07, skipping insertion in model container [2021-11-07 08:59:07,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:58" (2/3) ... [2021-11-07 08:59:07,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b4c278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:59:07, skipping insertion in model container [2021-11-07 08:59:07,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:59:07" (3/3) ... [2021-11-07 08:59:07,549 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-07 08:59:07,553 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:59:07,553 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-07 08:59:07,611 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:59:07,616 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 08:59:07,616 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-07 08:59:07,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 297 states, 277 states have (on average 1.4873646209386282) internal successors, (412), 296 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:07,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 08:59:07,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:07,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:07,642 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:07,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:07,646 INFO L85 PathProgramCache]: Analyzing trace with hash 28296255, now seen corresponding path program 1 times [2021-11-07 08:59:07,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:07,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587712506] [2021-11-07 08:59:07,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:07,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:08,220 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 08:59:08,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:08,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587712506] [2021-11-07 08:59:08,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587712506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:08,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:08,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:59:08,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095091162] [2021-11-07 08:59:08,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:08,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:59:08,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:08,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:59:08,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:59:08,260 INFO L87 Difference]: Start difference. First operand has 297 states, 277 states have (on average 1.4873646209386282) internal successors, (412), 296 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:08,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:08,307 INFO L93 Difference]: Finished difference Result 586 states and 815 transitions. [2021-11-07 08:59:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:59:08,310 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 08:59:08,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:08,319 INFO L225 Difference]: With dead ends: 586 [2021-11-07 08:59:08,319 INFO L226 Difference]: Without dead ends: 290 [2021-11-07 08:59:08,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:59:08,325 INFO L933 BasicCegarLoop]: 376 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, 376 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:08,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 4.84ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 08:59:08,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-07 08:59:08,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-07 08:59:08,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 271 states have (on average 1.3505535055350553) internal successors, (366), 289 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:08,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 366 transitions. [2021-11-07 08:59:08,380 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 366 transitions. Word has length 64 [2021-11-07 08:59:08,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:08,381 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 366 transitions. [2021-11-07 08:59:08,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:08,381 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 366 transitions. [2021-11-07 08:59:08,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 08:59:08,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:08,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:08,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:59:08,383 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:08,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:08,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1015264321, now seen corresponding path program 1 times [2021-11-07 08:59:08,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:08,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957659346] [2021-11-07 08:59:08,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:08,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:08,732 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 08:59:08,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:08,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957659346] [2021-11-07 08:59:08,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957659346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:08,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:08,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:59:08,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225233166] [2021-11-07 08:59:08,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:08,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:59:08,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:08,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:59:08,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:08,736 INFO L87 Difference]: Start difference. First operand 290 states and 366 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:09,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:09,011 INFO L93 Difference]: Finished difference Result 550 states and 694 transitions. [2021-11-07 08:59:09,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:59:09,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 08:59:09,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:09,014 INFO L225 Difference]: With dead ends: 550 [2021-11-07 08:59:09,014 INFO L226 Difference]: Without dead ends: 290 [2021-11-07 08:59:09,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.01ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:09,016 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 504 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 219.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.14ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 248.26ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:09,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 502 Invalid, 69 Unknown, 0 Unchecked, 5.14ms Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 248.26ms Time] [2021-11-07 08:59:09,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-07 08:59:09,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-07 08:59:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 271 states have (on average 1.3394833948339484) internal successors, (363), 289 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:09,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 363 transitions. [2021-11-07 08:59:09,040 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 363 transitions. Word has length 64 [2021-11-07 08:59:09,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:09,040 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 363 transitions. [2021-11-07 08:59:09,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:09,041 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 363 transitions. [2021-11-07 08:59:09,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 08:59:09,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:09,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:09,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:59:09,049 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:09,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:09,050 INFO L85 PathProgramCache]: Analyzing trace with hash -2079484297, now seen corresponding path program 1 times [2021-11-07 08:59:09,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:09,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027017756] [2021-11-07 08:59:09,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:09,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:09,372 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 08:59:09,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:09,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027017756] [2021-11-07 08:59:09,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027017756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:09,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:09,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:59:09,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812737230] [2021-11-07 08:59:09,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:09,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:59:09,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:09,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:59:09,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:09,375 INFO L87 Difference]: Start difference. First operand 290 states and 363 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:09,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:09,989 INFO L93 Difference]: Finished difference Result 757 states and 981 transitions. [2021-11-07 08:59:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:59:09,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 08:59:09,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:09,992 INFO L225 Difference]: With dead ends: 757 [2021-11-07 08:59:09,992 INFO L226 Difference]: Without dead ends: 488 [2021-11-07 08:59:09,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.17ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:59:09,995 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 280 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 514.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.73ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 559.67ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:09,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 1240 Invalid, 196 Unknown, 0 Unchecked, 5.73ms Time], IncrementalHoareTripleChecker [33 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 559.67ms Time] [2021-11-07 08:59:09,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-07 08:59:10,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 308. [2021-11-07 08:59:10,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 289 states have (on average 1.3183391003460208) internal successors, (381), 307 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 381 transitions. [2021-11-07 08:59:10,008 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 381 transitions. Word has length 76 [2021-11-07 08:59:10,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:10,008 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 381 transitions. [2021-11-07 08:59:10,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:10,009 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 381 transitions. [2021-11-07 08:59:10,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 08:59:10,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:10,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:10,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:59:10,010 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:10,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:10,011 INFO L85 PathProgramCache]: Analyzing trace with hash -818567047, now seen corresponding path program 1 times [2021-11-07 08:59:10,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:10,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071230454] [2021-11-07 08:59:10,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:10,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:10,244 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 08:59:10,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:10,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071230454] [2021-11-07 08:59:10,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071230454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:10,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:10,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:59:10,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022459827] [2021-11-07 08:59:10,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:10,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:59:10,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:10,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:59:10,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:10,246 INFO L87 Difference]: Start difference. First operand 308 states and 381 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:10,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:10,807 INFO L93 Difference]: Finished difference Result 675 states and 850 transitions. [2021-11-07 08:59:10,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:59:10,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 08:59:10,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:10,809 INFO L225 Difference]: With dead ends: 675 [2021-11-07 08:59:10,809 INFO L226 Difference]: Without dead ends: 398 [2021-11-07 08:59:10,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.98ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:59:10,811 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 207 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 462.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.37ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 513.57ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:10,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 966 Invalid, 183 Unknown, 0 Unchecked, 4.37ms Time], IncrementalHoareTripleChecker [33 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 513.57ms Time] [2021-11-07 08:59:10,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-07 08:59:10,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 326. [2021-11-07 08:59:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.299674267100977) internal successors, (399), 325 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:10,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 399 transitions. [2021-11-07 08:59:10,820 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 399 transitions. Word has length 76 [2021-11-07 08:59:10,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:10,820 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 399 transitions. [2021-11-07 08:59:10,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:10,820 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 399 transitions. [2021-11-07 08:59:10,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 08:59:10,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:10,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:10,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:59:10,822 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:10,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:10,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1654783221, now seen corresponding path program 1 times [2021-11-07 08:59:10,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:10,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830882098] [2021-11-07 08:59:10,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:10,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:59:11,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:11,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830882098] [2021-11-07 08:59:11,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830882098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:11,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:11,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:59:11,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332045466] [2021-11-07 08:59:11,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:11,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:59:11,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:11,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:59:11,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:11,089 INFO L87 Difference]: Start difference. First operand 326 states and 399 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:11,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:11,334 INFO L93 Difference]: Finished difference Result 586 states and 717 transitions. [2021-11-07 08:59:11,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:59:11,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 08:59:11,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:11,336 INFO L225 Difference]: With dead ends: 586 [2021-11-07 08:59:11,336 INFO L226 Difference]: Without dead ends: 326 [2021-11-07 08:59:11,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.48ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:59:11,338 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 480 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 186.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.43ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 206.96ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:11,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 508 Invalid, 62 Unknown, 0 Unchecked, 2.43ms Time], IncrementalHoareTripleChecker [9 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 206.96ms Time] [2021-11-07 08:59:11,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-07 08:59:11,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-07 08:59:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.293159609120521) internal successors, (397), 325 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:11,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2021-11-07 08:59:11,345 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 76 [2021-11-07 08:59:11,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:11,346 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2021-11-07 08:59:11,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:11,346 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2021-11-07 08:59:11,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 08:59:11,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:11,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:11,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:59:11,347 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:11,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:11,348 INFO L85 PathProgramCache]: Analyzing trace with hash 865605514, now seen corresponding path program 1 times [2021-11-07 08:59:11,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:11,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844491849] [2021-11-07 08:59:11,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:11,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:11,809 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 08:59:11,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:11,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844491849] [2021-11-07 08:59:11,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844491849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:11,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:11,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:59:11,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208644863] [2021-11-07 08:59:11,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:11,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:59:11,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:11,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:59:11,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:59:11,811 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:12,175 INFO L93 Difference]: Finished difference Result 513 states and 619 transitions. [2021-11-07 08:59:12,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:59:12,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 08:59:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:12,177 INFO L225 Difference]: With dead ends: 513 [2021-11-07 08:59:12,177 INFO L226 Difference]: Without dead ends: 326 [2021-11-07 08:59:12,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 224.08ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:59:12,178 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1115 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 207.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.82ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 222.89ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:12,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1115 Valid, 581 Invalid, 74 Unknown, 0 Unchecked, 3.82ms Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 222.89ms Time] [2021-11-07 08:59:12,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-07 08:59:12,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-07 08:59:12,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.289902280130293) internal successors, (396), 325 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:12,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2021-11-07 08:59:12,186 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 82 [2021-11-07 08:59:12,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:12,186 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2021-11-07 08:59:12,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:12,186 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2021-11-07 08:59:12,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 08:59:12,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:12,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:12,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:59:12,188 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:12,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:12,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1668683435, now seen corresponding path program 1 times [2021-11-07 08:59:12,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:12,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222524271] [2021-11-07 08:59:12,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:12,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:12,585 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 08:59:12,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:12,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222524271] [2021-11-07 08:59:12,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222524271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:12,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:12,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:59:12,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093009049] [2021-11-07 08:59:12,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:12,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:59:12,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:12,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:59:12,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:59:12,587 INFO L87 Difference]: Start difference. First operand 326 states and 396 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:13,086 INFO L93 Difference]: Finished difference Result 460 states and 548 transitions. [2021-11-07 08:59:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:59:13,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-07 08:59:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:13,088 INFO L225 Difference]: With dead ends: 460 [2021-11-07 08:59:13,088 INFO L226 Difference]: Without dead ends: 326 [2021-11-07 08:59:13,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 338.66ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-07 08:59:13,089 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1320 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 249.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.18ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 267.35ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:13,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1320 Valid, 694 Invalid, 90 Unknown, 0 Unchecked, 4.18ms Time], IncrementalHoareTripleChecker [12 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 267.35ms Time] [2021-11-07 08:59:13,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-07 08:59:13,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-07 08:59:13,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.283387622149837) internal successors, (394), 325 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:13,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 394 transitions. [2021-11-07 08:59:13,097 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 394 transitions. Word has length 88 [2021-11-07 08:59:13,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:13,097 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 394 transitions. [2021-11-07 08:59:13,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:13,098 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 394 transitions. [2021-11-07 08:59:13,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 08:59:13,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:13,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:13,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:59:13,099 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:13,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1980195350, now seen corresponding path program 1 times [2021-11-07 08:59:13,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:13,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466707718] [2021-11-07 08:59:13,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:13,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:13,354 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 08:59:13,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:13,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466707718] [2021-11-07 08:59:13,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466707718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:13,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:13,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:59:13,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652244967] [2021-11-07 08:59:13,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:13,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:59:13,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:13,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:59:13,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:13,356 INFO L87 Difference]: Start difference. First operand 326 states and 394 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:13,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:13,496 INFO L93 Difference]: Finished difference Result 534 states and 641 transitions. [2021-11-07 08:59:13,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:59:13,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-07 08:59:13,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:13,498 INFO L225 Difference]: With dead ends: 534 [2021-11-07 08:59:13,498 INFO L226 Difference]: Without dead ends: 326 [2021-11-07 08:59:13,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.05ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:13,499 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 129 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.67ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.81ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:13,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 806 Invalid, 40 Unknown, 0 Unchecked, 1.67ms Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 127.81ms Time] [2021-11-07 08:59:13,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-07 08:59:13,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-07 08:59:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.280130293159609) internal successors, (393), 325 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:13,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 393 transitions. [2021-11-07 08:59:13,505 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 393 transitions. Word has length 94 [2021-11-07 08:59:13,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:13,506 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 393 transitions. [2021-11-07 08:59:13,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 393 transitions. [2021-11-07 08:59:13,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 08:59:13,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:13,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:13,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 08:59:13,507 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:13,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:13,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1700306559, now seen corresponding path program 1 times [2021-11-07 08:59:13,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:13,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280666623] [2021-11-07 08:59:13,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:13,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:14,275 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 08:59:14,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:14,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280666623] [2021-11-07 08:59:14,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280666623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:14,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:14,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:59:14,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699986848] [2021-11-07 08:59:14,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:14,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:59:14,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:14,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:59:14,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:59:14,277 INFO L87 Difference]: Start difference. First operand 326 states and 393 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:15,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:15,282 INFO L93 Difference]: Finished difference Result 536 states and 627 transitions. [2021-11-07 08:59:15,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:59:15,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-07 08:59:15,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:15,285 INFO L225 Difference]: With dead ends: 536 [2021-11-07 08:59:15,285 INFO L226 Difference]: Without dead ends: 528 [2021-11-07 08:59:15,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 233.14ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:59:15,286 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 383 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 769.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.88ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 829.60ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:15,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 1362 Invalid, 319 Unknown, 0 Unchecked, 6.88ms Time], IncrementalHoareTripleChecker [66 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 829.60ms Time] [2021-11-07 08:59:15,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-07 08:59:15,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 342. [2021-11-07 08:59:15,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 323 states have (on average 1.2662538699690402) internal successors, (409), 341 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:15,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 409 transitions. [2021-11-07 08:59:15,296 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 409 transitions. Word has length 100 [2021-11-07 08:59:15,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:15,296 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 409 transitions. [2021-11-07 08:59:15,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:15,297 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 409 transitions. [2021-11-07 08:59:15,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 08:59:15,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:15,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:15,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 08:59:15,298 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:15,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:15,299 INFO L85 PathProgramCache]: Analyzing trace with hash -989785033, now seen corresponding path program 1 times [2021-11-07 08:59:15,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:15,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384365521] [2021-11-07 08:59:15,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:15,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:17,192 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 08:59:17,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:17,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384365521] [2021-11-07 08:59:17,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384365521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:17,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:17,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 08:59:17,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119036405] [2021-11-07 08:59:17,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:17,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:59:17,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:17,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:59:17,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:59:17,194 INFO L87 Difference]: Start difference. First operand 342 states and 409 transitions. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:19,254 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:21,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:23,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:25,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:27,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:29,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:37,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:37,918 INFO L93 Difference]: Finished difference Result 1166 states and 1416 transitions. [2021-11-07 08:59:37,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 08:59:37,919 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-07 08:59:37,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:37,923 INFO L225 Difference]: With dead ends: 1166 [2021-11-07 08:59:37,923 INFO L226 Difference]: Without dead ends: 970 [2021-11-07 08:59:37,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 3177.31ms TimeCoverageRelationStatistics Valid=241, Invalid=881, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 08:59:37,924 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1366 mSDsluCounter, 2993 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 88 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16960.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.72ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17891.17ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:37,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 3361 Invalid, 1853 Unknown, 0 Unchecked, 20.72ms Time], IncrementalHoareTripleChecker [88 Valid, 1759 Invalid, 6 Unknown, 0 Unchecked, 17891.17ms Time] [2021-11-07 08:59:37,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2021-11-07 08:59:37,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 374. [2021-11-07 08:59:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 355 states have (on average 1.267605633802817) internal successors, (450), 373 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 08:59:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 450 transitions. [2021-11-07 08:59:37,938 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 450 transitions. Word has length 104 [2021-11-07 08:59:37,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:37,938 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 450 transitions. [2021-11-07 08:59:37,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:37,938 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 450 transitions. [2021-11-07 08:59:37,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 08:59:37,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:37,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:37,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 08:59:37,940 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:37,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:37,940 INFO L85 PathProgramCache]: Analyzing trace with hash 90747777, now seen corresponding path program 1 times [2021-11-07 08:59:37,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:37,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012205724] [2021-11-07 08:59:37,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:37,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:39,131 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 08:59:39,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:39,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012205724] [2021-11-07 08:59:39,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012205724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:39,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:39,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 08:59:39,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140807966] [2021-11-07 08:59:39,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:39,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:59:39,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:39,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:59:39,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:59:39,132 INFO L87 Difference]: Start difference. First operand 374 states and 450 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:41,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:43,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:45,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:45,334 INFO L93 Difference]: Finished difference Result 911 states and 1093 transitions. [2021-11-07 08:59:45,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 08:59:45,335 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-07 08:59:45,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:45,337 INFO L225 Difference]: With dead ends: 911 [2021-11-07 08:59:45,337 INFO L226 Difference]: Without dead ends: 632 [2021-11-07 08:59:45,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 636.18ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-07 08:59:45,338 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 634 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 36 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5467.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.44ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5761.09ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:45,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 1564 Invalid, 588 Unknown, 0 Unchecked, 5.44ms Time], IncrementalHoareTripleChecker [36 Valid, 550 Invalid, 2 Unknown, 0 Unchecked, 5761.09ms Time] [2021-11-07 08:59:45,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-07 08:59:45,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 436. [2021-11-07 08:59:45,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 417 states have (on average 1.2685851318944845) internal successors, (529), 435 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 08:59:45,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 529 transitions. [2021-11-07 08:59:45,351 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 529 transitions. Word has length 108 [2021-11-07 08:59:45,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:45,351 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 529 transitions. [2021-11-07 08:59:45,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:45,351 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 529 transitions. [2021-11-07 08:59:45,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 08:59:45,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:45,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:45,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 08:59:45,353 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:45,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:45,354 INFO L85 PathProgramCache]: Analyzing trace with hash -418725313, now seen corresponding path program 1 times [2021-11-07 08:59:45,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:45,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304869546] [2021-11-07 08:59:45,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:45,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:46,992 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 08:59:46,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:46,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304869546] [2021-11-07 08:59:46,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304869546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:46,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:46,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 08:59:46,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035129873] [2021-11-07 08:59:46,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:46,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 08:59:46,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:46,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 08:59:46,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-07 08:59:46,995 INFO L87 Difference]: Start difference. First operand 436 states and 529 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:49,042 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:51,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:53,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:55,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:57,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:59,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:01,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:10,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:10,135 INFO L93 Difference]: Finished difference Result 1256 states and 1522 transitions. [2021-11-07 09:00:10,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 09:00:10,136 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-07 09:00:10,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:10,140 INFO L225 Difference]: With dead ends: 1256 [2021-11-07 09:00:10,140 INFO L226 Difference]: Without dead ends: 1060 [2021-11-07 09:00:10,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3078.38ms TimeCoverageRelationStatistics Valid=244, Invalid=946, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 09:00:10,142 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 1348 mSDsluCounter, 3740 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 80 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19294.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 4214 SdHoareTripleChecker+Invalid, 2182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.03ms SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20508.12ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:10,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 4214 Invalid, 2182 Unknown, 0 Unchecked, 18.03ms Time], IncrementalHoareTripleChecker [80 Valid, 2095 Invalid, 7 Unknown, 0 Unchecked, 20508.12ms Time] [2021-11-07 09:00:10,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-11-07 09:00:10,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 440. [2021-11-07 09:00:10,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 421 states have (on average 1.2660332541567696) internal successors, (533), 439 states have internal predecessors, (533), 0 states have call successors, (0), 0 states 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 09:00:10,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 533 transitions. [2021-11-07 09:00:10,155 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 533 transitions. Word has length 108 [2021-11-07 09:00:10,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:10,156 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 533 transitions. [2021-11-07 09:00:10,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:10,156 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 533 transitions. [2021-11-07 09:00:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 09:00:10,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:10,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:00:10,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 09:00:10,157 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:00:10,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:10,158 INFO L85 PathProgramCache]: Analyzing trace with hash -413912913, now seen corresponding path program 1 times [2021-11-07 09:00:10,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:10,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412569350] [2021-11-07 09:00:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:10,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:11,906 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 09:00:11,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:11,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412569350] [2021-11-07 09:00:11,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412569350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:11,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:11,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 09:00:11,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518948176] [2021-11-07 09:00:11,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:11,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 09:00:11,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:11,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 09:00:11,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:00:11,909 INFO L87 Difference]: Start difference. First operand 440 states and 533 transitions. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:13,952 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:16,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:18,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:20,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:22,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:24,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:35,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:35,752 INFO L93 Difference]: Finished difference Result 1804 states and 2149 transitions. [2021-11-07 09:00:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-07 09:00:35,753 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-07 09:00:35,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:35,759 INFO L225 Difference]: With dead ends: 1804 [2021-11-07 09:00:35,760 INFO L226 Difference]: Without dead ends: 1608 [2021-11-07 09:00:35,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 6513.99ms TimeCoverageRelationStatistics Valid=611, Invalid=1839, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 09:00:35,762 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 4554 mSDsluCounter, 3392 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 125 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16798.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4554 SdHoareTripleChecker+Valid, 3818 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.88ms SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17823.86ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:35,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4554 Valid, 3818 Invalid, 1664 Unknown, 0 Unchecked, 23.88ms Time], IncrementalHoareTripleChecker [125 Valid, 1533 Invalid, 6 Unknown, 0 Unchecked, 17823.86ms Time] [2021-11-07 09:00:35,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2021-11-07 09:00:35,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 508. [2021-11-07 09:00:35,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.2678936605316973) internal successors, (620), 507 states have internal predecessors, (620), 0 states have call successors, (0), 0 states 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 09:00:35,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 620 transitions. [2021-11-07 09:00:35,783 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 620 transitions. Word has length 108 [2021-11-07 09:00:35,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:35,784 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 620 transitions. [2021-11-07 09:00:35,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:35,784 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 620 transitions. [2021-11-07 09:00:35,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-07 09:00:35,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:35,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:00:35,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 09:00:35,786 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:00:35,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:35,786 INFO L85 PathProgramCache]: Analyzing trace with hash 48063649, now seen corresponding path program 1 times [2021-11-07 09:00:35,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:35,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793916336] [2021-11-07 09:00:35,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:35,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:36,777 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 09:00:36,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:36,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793916336] [2021-11-07 09:00:36,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793916336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:36,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:36,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:00:36,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654611791] [2021-11-07 09:00:36,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:36,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:00:36,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:36,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:00:36,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:00:36,779 INFO L87 Difference]: Start difference. First operand 508 states and 620 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:37,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:37,997 INFO L93 Difference]: Finished difference Result 1152 states and 1375 transitions. [2021-11-07 09:00:37,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 09:00:37,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-07 09:00:37,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:38,000 INFO L225 Difference]: With dead ends: 1152 [2021-11-07 09:00:38,000 INFO L226 Difference]: Without dead ends: 616 [2021-11-07 09:00:38,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 250.88ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:00:38,001 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 195 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1012.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.39ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1075.72ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:38,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 2255 Invalid, 419 Unknown, 0 Unchecked, 4.39ms Time], IncrementalHoareTripleChecker [58 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 1075.72ms Time] [2021-11-07 09:00:38,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-11-07 09:00:38,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 457. [2021-11-07 09:00:38,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 438 states have (on average 1.2488584474885844) internal successors, (547), 456 states have internal predecessors, (547), 0 states have call successors, (0), 0 states 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 09:00:38,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 547 transitions. [2021-11-07 09:00:38,016 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 547 transitions. Word has length 111 [2021-11-07 09:00:38,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:38,017 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 547 transitions. [2021-11-07 09:00:38,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:38,017 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 547 transitions. [2021-11-07 09:00:38,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 09:00:38,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:38,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:00:38,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 09:00:38,019 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:00:38,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:38,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1701466108, now seen corresponding path program 1 times [2021-11-07 09:00:38,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:38,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19638759] [2021-11-07 09:00:38,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:38,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:38,248 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 09:00:38,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:38,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19638759] [2021-11-07 09:00:38,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19638759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:38,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:38,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:00:38,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653417133] [2021-11-07 09:00:38,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:38,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:00:38,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:38,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:00:38,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:00:38,250 INFO L87 Difference]: Start difference. First operand 457 states and 547 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:38,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:38,750 INFO L93 Difference]: Finished difference Result 938 states and 1117 transitions. [2021-11-07 09:00:38,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:00:38,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-07 09:00:38,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:38,753 INFO L225 Difference]: With dead ends: 938 [2021-11-07 09:00:38,753 INFO L226 Difference]: Without dead ends: 489 [2021-11-07 09:00:38,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.78ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:00:38,754 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 29 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 422.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.68ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 453.20ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:38,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 955 Invalid, 168 Unknown, 0 Unchecked, 1.68ms Time], IncrementalHoareTripleChecker [28 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 453.20ms Time] [2021-11-07 09:00:38,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-11-07 09:00:38,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 465. [2021-11-07 09:00:38,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 446 states have (on average 1.2197309417040358) internal successors, (544), 464 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:38,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 544 transitions. [2021-11-07 09:00:38,787 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 544 transitions. Word has length 113 [2021-11-07 09:00:38,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:38,788 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 544 transitions. [2021-11-07 09:00:38,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:38,788 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 544 transitions. [2021-11-07 09:00:38,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 09:00:38,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:38,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:38,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 09:00:38,789 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:00:38,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:38,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1277819386, now seen corresponding path program 1 times [2021-11-07 09:00:38,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:38,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714909040] [2021-11-07 09:00:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:38,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:39,977 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 09:00:39,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:39,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714909040] [2021-11-07 09:00:39,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714909040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:39,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:39,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:00:39,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168479752] [2021-11-07 09:00:39,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:39,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:00:39,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:39,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:00:39,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:00:39,978 INFO L87 Difference]: Start difference. First operand 465 states and 544 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:42,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:43,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:43,908 INFO L93 Difference]: Finished difference Result 1218 states and 1414 transitions. [2021-11-07 09:00:43,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:00:43,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-07 09:00:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:43,911 INFO L225 Difference]: With dead ends: 1218 [2021-11-07 09:00:43,911 INFO L226 Difference]: Without dead ends: 876 [2021-11-07 09:00:43,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 589.52ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:00:43,913 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 578 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3287.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.55ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3478.58ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:43,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 1579 Invalid, 381 Unknown, 0 Unchecked, 6.55ms Time], IncrementalHoareTripleChecker [15 Valid, 365 Invalid, 1 Unknown, 0 Unchecked, 3478.58ms Time] [2021-11-07 09:00:43,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-11-07 09:00:43,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 479. [2021-11-07 09:00:43,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 460 states have (on average 1.2173913043478262) internal successors, (560), 478 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 09:00:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 560 transitions. [2021-11-07 09:00:43,930 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 560 transitions. Word has length 113 [2021-11-07 09:00:43,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:43,930 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 560 transitions. [2021-11-07 09:00:43,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:43,930 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 560 transitions. [2021-11-07 09:00:43,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 09:00:43,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:43,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:00:43,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 09:00:43,932 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:00:43,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:43,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2081003986, now seen corresponding path program 1 times [2021-11-07 09:00:43,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:43,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741940953] [2021-11-07 09:00:43,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:43,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:46,236 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 09:00:46,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:46,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741940953] [2021-11-07 09:00:46,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741940953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:46,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:46,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 09:00:46,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646729615] [2021-11-07 09:00:46,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:46,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 09:00:46,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:46,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 09:00:46,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-07 09:00:46,238 INFO L87 Difference]: Start difference. First operand 479 states and 560 transitions. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:48,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:50,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:52,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:54,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:56,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:58,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:01,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:03,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:08,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:08,584 INFO L93 Difference]: Finished difference Result 1219 states and 1417 transitions. [2021-11-07 09:01:08,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 09:01:08,585 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-07 09:01:08,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:08,587 INFO L225 Difference]: With dead ends: 1219 [2021-11-07 09:01:08,587 INFO L226 Difference]: Without dead ends: 944 [2021-11-07 09:01:08,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 2688.40ms TimeCoverageRelationStatistics Valid=271, Invalid=785, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 09:01:08,588 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 2529 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 92 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19336.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2529 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.20ms SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20452.20ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:08,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2529 Valid, 2694 Invalid, 1255 Unknown, 0 Unchecked, 16.20ms Time], IncrementalHoareTripleChecker [92 Valid, 1155 Invalid, 8 Unknown, 0 Unchecked, 20452.20ms Time] [2021-11-07 09:01:08,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2021-11-07 09:01:08,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 665. [2021-11-07 09:01:08,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 646 states have (on average 1.2291021671826625) internal successors, (794), 664 states have internal predecessors, (794), 0 states have call successors, (0), 0 states 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 09:01:08,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 794 transitions. [2021-11-07 09:01:08,609 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 794 transitions. Word has length 113 [2021-11-07 09:01:08,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:08,610 INFO L470 AbstractCegarLoop]: Abstraction has 665 states and 794 transitions. [2021-11-07 09:01:08,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:08,610 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 794 transitions. [2021-11-07 09:01:08,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 09:01:08,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:08,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:01:08,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 09:01:08,612 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:01:08,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:08,613 INFO L85 PathProgramCache]: Analyzing trace with hash -152731284, now seen corresponding path program 1 times [2021-11-07 09:01:08,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:08,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108105160] [2021-11-07 09:01:08,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:08,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:11,801 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 09:01:11,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:11,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108105160] [2021-11-07 09:01:11,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108105160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:11,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:11,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 09:01:11,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175000436] [2021-11-07 09:01:11,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:11,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 09:01:11,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:11,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 09:01:11,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-11-07 09:01:11,803 INFO L87 Difference]: Start difference. First operand 665 states and 794 transitions. Second operand has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:13,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:15,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:18,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:20,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:22,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:24,473 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:26,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:28,745 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:30,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:44,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:44,685 INFO L93 Difference]: Finished difference Result 2057 states and 2400 transitions. [2021-11-07 09:01:44,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-07 09:01:44,686 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-07 09:01:44,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:44,690 INFO L225 Difference]: With dead ends: 2057 [2021-11-07 09:01:44,690 INFO L226 Difference]: Without dead ends: 1788 [2021-11-07 09:01:44,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 8167.15ms TimeCoverageRelationStatistics Valid=680, Invalid=2860, Unknown=0, NotChecked=0, Total=3540 [2021-11-07 09:01:44,692 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 5075 mSDsluCounter, 4144 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 193 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24257.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5075 SdHoareTripleChecker+Valid, 4513 SdHoareTripleChecker+Invalid, 2410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.54ms SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25717.39ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:44,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5075 Valid, 4513 Invalid, 2410 Unknown, 0 Unchecked, 29.54ms Time], IncrementalHoareTripleChecker [193 Valid, 2208 Invalid, 9 Unknown, 0 Unchecked, 25717.39ms Time] [2021-11-07 09:01:44,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2021-11-07 09:01:44,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 605. [2021-11-07 09:01:44,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 586 states have (on average 1.2320819112627985) internal successors, (722), 604 states have internal predecessors, (722), 0 states have call successors, (0), 0 states 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 09:01:44,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 722 transitions. [2021-11-07 09:01:44,715 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 722 transitions. Word has length 113 [2021-11-07 09:01:44,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:44,716 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 722 transitions. [2021-11-07 09:01:44,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:44,716 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 722 transitions. [2021-11-07 09:01:44,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 09:01:44,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:44,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:01:44,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 09:01:44,718 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:01:44,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:44,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1369284272, now seen corresponding path program 1 times [2021-11-07 09:01:44,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:44,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919840091] [2021-11-07 09:01:44,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:44,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:46,002 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 09:01:46,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:46,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919840091] [2021-11-07 09:01:46,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919840091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:46,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:46,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 09:01:46,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764138722] [2021-11-07 09:01:46,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:46,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 09:01:46,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:46,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 09:01:46,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:01:46,006 INFO L87 Difference]: Start difference. First operand 605 states and 722 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 09:01:48,051 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:50,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:52,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:57,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:57,687 INFO L93 Difference]: Finished difference Result 1936 states and 2312 transitions. [2021-11-07 09:01:57,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 09:01:57,688 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-11-07 09:01:57,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:57,692 INFO L225 Difference]: With dead ends: 1936 [2021-11-07 09:01:57,692 INFO L226 Difference]: Without dead ends: 1770 [2021-11-07 09:01:57,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1899.31ms TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2021-11-07 09:01:57,694 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 1215 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 52 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9482.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 3513 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.31ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10040.87ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:57,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 3513 Invalid, 1330 Unknown, 0 Unchecked, 14.31ms Time], IncrementalHoareTripleChecker [52 Valid, 1275 Invalid, 3 Unknown, 0 Unchecked, 10040.87ms Time] [2021-11-07 09:01:57,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2021-11-07 09:01:57,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 682. [2021-11-07 09:01:57,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 663 states have (on average 1.2217194570135748) internal successors, (810), 681 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 09:01:57,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 810 transitions. [2021-11-07 09:01:57,721 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 810 transitions. Word has length 114 [2021-11-07 09:01:57,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:57,721 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 810 transitions. [2021-11-07 09:01:57,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 09:01:57,722 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 810 transitions. [2021-11-07 09:01:57,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-07 09:01:57,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:57,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:01:57,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 09:01:57,724 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:01:57,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:57,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1356810702, now seen corresponding path program 1 times [2021-11-07 09:01:57,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:57,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534711434] [2021-11-07 09:01:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:57,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:58,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 09:01:58,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:58,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534711434] [2021-11-07 09:01:58,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534711434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:58,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:58,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:01:58,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953728389] [2021-11-07 09:01:58,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:58,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:01:58,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:58,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:01:58,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:01:58,870 INFO L87 Difference]: Start difference. First operand 682 states and 810 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:00,919 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:02,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:02,377 INFO L93 Difference]: Finished difference Result 1583 states and 1864 transitions. [2021-11-07 09:02:02,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:02:02,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-07 09:02:02,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:02,380 INFO L225 Difference]: With dead ends: 1583 [2021-11-07 09:02:02,380 INFO L226 Difference]: Without dead ends: 892 [2021-11-07 09:02:02,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 126.88ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:02:02,383 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 382 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3208.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.21ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3394.47ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:02,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 884 Invalid, 430 Unknown, 0 Unchecked, 4.21ms Time], IncrementalHoareTripleChecker [37 Valid, 392 Invalid, 1 Unknown, 0 Unchecked, 3394.47ms Time] [2021-11-07 09:02:02,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-11-07 09:02:02,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 652. [2021-11-07 09:02:02,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 633 states have (on average 1.187993680884676) internal successors, (752), 651 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 752 transitions. [2021-11-07 09:02:02,405 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 752 transitions. Word has length 116 [2021-11-07 09:02:02,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:02,406 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 752 transitions. [2021-11-07 09:02:02,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:02,406 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 752 transitions. [2021-11-07 09:02:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-07 09:02:02,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:02,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:02:02,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 09:02:02,408 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:02:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:02,409 INFO L85 PathProgramCache]: Analyzing trace with hash 2036869072, now seen corresponding path program 1 times [2021-11-07 09:02:02,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:02,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531519034] [2021-11-07 09:02:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:02,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:03,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:03,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531519034] [2021-11-07 09:02:03,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531519034] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:02:03,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349073625] [2021-11-07 09:02:03,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:03,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:02:03,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:02:03,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:02:03,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 09:02:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:04,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 3280 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 09:02:04,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:02:05,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-07 09:02:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 09:02:05,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:02:05,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349073625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:05,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 09:02:05,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2021-11-07 09:02:05,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716565275] [2021-11-07 09:02:05,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:05,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:02:05,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:05,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:02:05,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-07 09:02:05,881 INFO L87 Difference]: Start difference. First operand 652 states and 752 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:07,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:09,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:09,661 INFO L93 Difference]: Finished difference Result 1311 states and 1508 transitions. [2021-11-07 09:02:09,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 09:02:09,662 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-07 09:02:09,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:09,663 INFO L225 Difference]: With dead ends: 1311 [2021-11-07 09:02:09,663 INFO L226 Difference]: Without dead ends: 688 [2021-11-07 09:02:09,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1324.94ms TimeCoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2021-11-07 09:02:09,665 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 588 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3136.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.77ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3314.44ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:09,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 1633 Invalid, 418 Unknown, 0 Unchecked, 5.77ms Time], IncrementalHoareTripleChecker [22 Valid, 395 Invalid, 1 Unknown, 0 Unchecked, 3314.44ms Time] [2021-11-07 09:02:09,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-11-07 09:02:09,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 648. [2021-11-07 09:02:09,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 629 states have (on average 1.1875993640699523) internal successors, (747), 647 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 09:02:09,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 747 transitions. [2021-11-07 09:02:09,688 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 747 transitions. Word has length 116 [2021-11-07 09:02:09,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:09,688 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 747 transitions. [2021-11-07 09:02:09,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:09,689 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 747 transitions. [2021-11-07 09:02:09,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 09:02:09,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:09,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:02:09,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 09:02:09,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-07 09:02:09,912 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:02:09,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:09,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1331151359, now seen corresponding path program 1 times [2021-11-07 09:02:09,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:09,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105621421] [2021-11-07 09:02:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:09,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:11,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:11,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105621421] [2021-11-07 09:02:11,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105621421] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:02:11,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812819271] [2021-11-07 09:02:11,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:11,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:02:11,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:02:11,446 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:02:11,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 09:02:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:12,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-07 09:02:12,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:02:13,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-07 09:02:13,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-07 09:02:14,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:14,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:02:14,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812819271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:14,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 09:02:14,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2021-11-07 09:02:14,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18733409] [2021-11-07 09:02:14,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:14,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:02:14,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:14,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:02:14,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:02:14,041 INFO L87 Difference]: Start difference. First operand 648 states and 747 transitions. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:16,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:18,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:18,858 INFO L93 Difference]: Finished difference Result 1106 states and 1288 transitions. [2021-11-07 09:02:18,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 09:02:18,860 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-07 09:02:18,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:18,863 INFO L225 Difference]: With dead ends: 1106 [2021-11-07 09:02:18,863 INFO L226 Difference]: Without dead ends: 886 [2021-11-07 09:02:18,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2492.96ms TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2021-11-07 09:02:18,864 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 376 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3308.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 3551 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.08ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3515.14ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:18,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 3551 Invalid, 429 Unknown, 0 Unchecked, 8.08ms Time], IncrementalHoareTripleChecker [9 Valid, 419 Invalid, 1 Unknown, 0 Unchecked, 3515.14ms Time] [2021-11-07 09:02:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2021-11-07 09:02:18,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 616. [2021-11-07 09:02:18,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 597 states have (on average 1.187604690117253) internal successors, (709), 615 states have internal predecessors, (709), 0 states have call successors, (0), 0 states 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 09:02:18,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 709 transitions. [2021-11-07 09:02:18,889 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 709 transitions. Word has length 122 [2021-11-07 09:02:18,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:18,889 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 709 transitions. [2021-11-07 09:02:18,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:18,889 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 709 transitions. [2021-11-07 09:02:18,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 09:02:18,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:18,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:02:18,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 09:02:19,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-07 09:02:19,111 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:02:19,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:19,111 INFO L85 PathProgramCache]: Analyzing trace with hash 16376778, now seen corresponding path program 1 times [2021-11-07 09:02:19,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:19,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17897521] [2021-11-07 09:02:19,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:19,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:20,845 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 09:02:20,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:20,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17897521] [2021-11-07 09:02:20,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17897521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:20,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:20,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 09:02:20,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997607256] [2021-11-07 09:02:20,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:20,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 09:02:20,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:20,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 09:02:20,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-07 09:02:20,850 INFO L87 Difference]: Start difference. First operand 616 states and 709 transitions. Second operand has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:22,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:25,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:32,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:32,221 INFO L93 Difference]: Finished difference Result 2002 states and 2289 transitions. [2021-11-07 09:02:32,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 09:02:32,222 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-07 09:02:32,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:32,226 INFO L225 Difference]: With dead ends: 2002 [2021-11-07 09:02:32,226 INFO L226 Difference]: Without dead ends: 1705 [2021-11-07 09:02:32,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 3522.00ms TimeCoverageRelationStatistics Valid=584, Invalid=1672, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 09:02:32,227 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 3442 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 110 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7958.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3442 SdHoareTripleChecker+Valid, 3389 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.94ms SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8434.18ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:32,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3442 Valid, 3389 Invalid, 1545 Unknown, 0 Unchecked, 18.94ms Time], IncrementalHoareTripleChecker [110 Valid, 1433 Invalid, 2 Unknown, 0 Unchecked, 8434.18ms Time] [2021-11-07 09:02:32,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2021-11-07 09:02:32,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 695. [2021-11-07 09:02:32,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 676 states have (on average 1.1760355029585798) internal successors, (795), 694 states have internal predecessors, (795), 0 states have call successors, (0), 0 states 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 09:02:32,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 795 transitions. [2021-11-07 09:02:32,251 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 795 transitions. Word has length 122 [2021-11-07 09:02:32,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:32,251 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 795 transitions. [2021-11-07 09:02:32,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:32,251 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 795 transitions. [2021-11-07 09:02:32,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 09:02:32,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:32,253 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:32,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 09:02:32,253 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:02:32,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:32,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1939604812, now seen corresponding path program 1 times [2021-11-07 09:02:32,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:32,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151062954] [2021-11-07 09:02:32,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:32,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:35,971 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 09:02:35,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:35,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151062954] [2021-11-07 09:02:35,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151062954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:35,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:35,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-07 09:02:35,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992313302] [2021-11-07 09:02:35,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:35,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 09:02:35,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:35,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 09:02:35,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:02:35,974 INFO L87 Difference]: Start difference. First operand 695 states and 795 transitions. Second operand has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:38,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:40,154 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:42,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:44,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:46,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:48,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:50,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:52,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:55,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:05,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:03:05,514 INFO L93 Difference]: Finished difference Result 1437 states and 1652 transitions. [2021-11-07 09:03:05,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 09:03:05,515 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-07 09:03:05,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:03:05,518 INFO L225 Difference]: With dead ends: 1437 [2021-11-07 09:03:05,518 INFO L226 Difference]: Without dead ends: 1152 [2021-11-07 09:03:05,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 6509.90ms TimeCoverageRelationStatistics Valid=470, Invalid=1510, Unknown=0, NotChecked=0, Total=1980 [2021-11-07 09:03:05,520 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 2950 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 132 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23238.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2950 SdHoareTripleChecker+Valid, 4483 SdHoareTripleChecker+Invalid, 2210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.26ms SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24708.71ms IncrementalHoareTripleChecker+Time [2021-11-07 09:03:05,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2950 Valid, 4483 Invalid, 2210 Unknown, 0 Unchecked, 24.26ms Time], IncrementalHoareTripleChecker [132 Valid, 2069 Invalid, 9 Unknown, 0 Unchecked, 24708.71ms Time] [2021-11-07 09:03:05,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-11-07 09:03:05,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 720. [2021-11-07 09:03:05,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 701 states have (on average 1.174037089871612) internal successors, (823), 719 states have internal predecessors, (823), 0 states have call successors, (0), 0 states 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 09:03:05,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 823 transitions. [2021-11-07 09:03:05,547 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 823 transitions. Word has length 122 [2021-11-07 09:03:05,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:03:05,547 INFO L470 AbstractCegarLoop]: Abstraction has 720 states and 823 transitions. [2021-11-07 09:03:05,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:05,547 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 823 transitions. [2021-11-07 09:03:05,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 09:03:05,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:03:05,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:03:05,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 09:03:05,549 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:03:05,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:03:05,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1428388624, now seen corresponding path program 1 times [2021-11-07 09:03:05,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:03:05,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139574624] [2021-11-07 09:03:05,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:03:05,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:03:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:03:06,925 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 09:03:06,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:03:06,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139574624] [2021-11-07 09:03:06,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139574624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:03:06,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:03:06,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 09:03:06,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453788231] [2021-11-07 09:03:06,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:03:06,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 09:03:06,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:03:06,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 09:03:06,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:03:06,927 INFO L87 Difference]: Start difference. First operand 720 states and 823 transitions. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:08,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:11,107 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:13,235 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:15,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:19,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:03:19,648 INFO L93 Difference]: Finished difference Result 1648 states and 1907 transitions. [2021-11-07 09:03:19,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 09:03:19,649 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-07 09:03:19,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:03:19,652 INFO L225 Difference]: With dead ends: 1648 [2021-11-07 09:03:19,652 INFO L226 Difference]: Without dead ends: 1408 [2021-11-07 09:03:19,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1493.14ms TimeCoverageRelationStatistics Valid=214, Invalid=908, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 09:03:19,653 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 1154 mSDsluCounter, 2989 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 51 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10851.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 3474 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.46ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11545.58ms IncrementalHoareTripleChecker+Time [2021-11-07 09:03:19,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1154 Valid, 3474 Invalid, 1287 Unknown, 0 Unchecked, 11.46ms Time], IncrementalHoareTripleChecker [51 Valid, 1232 Invalid, 4 Unknown, 0 Unchecked, 11545.58ms Time] [2021-11-07 09:03:19,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2021-11-07 09:03:19,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 730. [2021-11-07 09:03:19,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 711 states have (on average 1.1744022503516174) internal successors, (835), 729 states have internal predecessors, (835), 0 states have call successors, (0), 0 states 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 09:03:19,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 835 transitions. [2021-11-07 09:03:19,681 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 835 transitions. Word has length 122 [2021-11-07 09:03:19,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:03:19,682 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 835 transitions. [2021-11-07 09:03:19,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:19,682 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 835 transitions. [2021-11-07 09:03:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 09:03:19,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:03:19,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:03:19,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 09:03:19,684 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:03:19,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:03:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1686554062, now seen corresponding path program 1 times [2021-11-07 09:03:19,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:03:19,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564437912] [2021-11-07 09:03:19,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:03:19,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:03:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:03:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:03:23,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:03:23,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564437912] [2021-11-07 09:03:23,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564437912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:03:23,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:03:23,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-07 09:03:23,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797033996] [2021-11-07 09:03:23,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:03:23,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 09:03:23,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:03:23,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 09:03:23,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:03:23,170 INFO L87 Difference]: Start difference. First operand 730 states and 835 transitions. Second operand has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:25,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:27,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:29,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:31,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:33,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:35,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:37,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:40,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:55,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:03:55,817 INFO L93 Difference]: Finished difference Result 1957 states and 2245 transitions. [2021-11-07 09:03:55,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-07 09:03:55,817 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-07 09:03:55,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:03:55,821 INFO L225 Difference]: With dead ends: 1957 [2021-11-07 09:03:55,821 INFO L226 Difference]: Without dead ends: 1637 [2021-11-07 09:03:55,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 9513.00ms TimeCoverageRelationStatistics Valid=625, Invalid=2567, Unknown=0, NotChecked=0, Total=3192 [2021-11-07 09:03:55,823 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 3042 mSDsluCounter, 6146 mSDsCounter, 0 mSdLazyCounter, 2750 mSolverCounterSat, 155 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22967.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 6672 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.94ms SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2750 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24388.98ms IncrementalHoareTripleChecker+Time [2021-11-07 09:03:55,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3042 Valid, 6672 Invalid, 2913 Unknown, 0 Unchecked, 27.94ms Time], IncrementalHoareTripleChecker [155 Valid, 2750 Invalid, 8 Unknown, 0 Unchecked, 24388.98ms Time] [2021-11-07 09:03:55,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-11-07 09:03:55,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 793. [2021-11-07 09:03:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 774 states have (on average 1.1705426356589148) internal successors, (906), 792 states have internal predecessors, (906), 0 states have call successors, (0), 0 states 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 09:03:55,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 906 transitions. [2021-11-07 09:03:55,870 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 906 transitions. Word has length 122 [2021-11-07 09:03:55,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:03:55,871 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 906 transitions. [2021-11-07 09:03:55,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:55,871 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 906 transitions. [2021-11-07 09:03:55,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 09:03:55,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:03:55,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:03:55,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 09:03:55,878 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:03:55,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:03:55,878 INFO L85 PathProgramCache]: Analyzing trace with hash -889637883, now seen corresponding path program 1 times [2021-11-07 09:03:55,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:03:55,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781741340] [2021-11-07 09:03:55,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:03:55,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:03:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:03:57,636 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 09:03:57,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:03:57,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781741340] [2021-11-07 09:03:57,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781741340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:03:57,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:03:57,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 09:03:57,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449735992] [2021-11-07 09:03:57,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:03:57,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 09:03:57,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:03:57,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 09:03:57,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:03:57,638 INFO L87 Difference]: Start difference. First operand 793 states and 906 transitions. Second operand has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:59,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:01,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:03,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:06,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:08,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:11,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:04:11,003 INFO L93 Difference]: Finished difference Result 1726 states and 1955 transitions. [2021-11-07 09:04:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 09:04:11,003 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-07 09:04:11,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:04:11,006 INFO L225 Difference]: With dead ends: 1726 [2021-11-07 09:04:11,007 INFO L226 Difference]: Without dead ends: 1394 [2021-11-07 09:04:11,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1424.45ms TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-11-07 09:04:11,008 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 2598 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 122 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11757.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2598 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.56ms SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12436.10ms IncrementalHoareTripleChecker+Time [2021-11-07 09:04:11,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2598 Valid, 1790 Invalid, 670 Unknown, 0 Unchecked, 9.56ms Time], IncrementalHoareTripleChecker [122 Valid, 543 Invalid, 5 Unknown, 0 Unchecked, 12436.10ms Time] [2021-11-07 09:04:11,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-11-07 09:04:11,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 798. [2021-11-07 09:04:11,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 779 states have (on average 1.1694480102695763) internal successors, (911), 797 states have internal predecessors, (911), 0 states have call successors, (0), 0 states 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 09:04:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 911 transitions. [2021-11-07 09:04:11,038 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 911 transitions. Word has length 122 [2021-11-07 09:04:11,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:04:11,039 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 911 transitions. [2021-11-07 09:04:11,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:11,039 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 911 transitions. [2021-11-07 09:04:11,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 09:04:11,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:04:11,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:04:11,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 09:04:11,040 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:04:11,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:04:11,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1007342128, now seen corresponding path program 1 times [2021-11-07 09:04:11,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:04:11,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893269683] [2021-11-07 09:04:11,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:04:11,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:04:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:04:13,883 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 09:04:13,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:04:13,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893269683] [2021-11-07 09:04:13,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893269683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:04:13,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:04:13,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 09:04:13,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837595894] [2021-11-07 09:04:13,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:04:13,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 09:04:13,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:04:13,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 09:04:13,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:04:13,885 INFO L87 Difference]: Start difference. First operand 798 states and 911 transitions. Second operand has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:15,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:18,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:20,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:22,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:24,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:26,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:31,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:04:31,718 INFO L93 Difference]: Finished difference Result 1427 states and 1623 transitions. [2021-11-07 09:04:31,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 09:04:31,719 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-07 09:04:31,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:04:31,721 INFO L225 Difference]: With dead ends: 1427 [2021-11-07 09:04:31,721 INFO L226 Difference]: Without dead ends: 850 [2021-11-07 09:04:31,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 3178.49ms TimeCoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 09:04:31,723 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 858 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 84 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14610.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.85ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15498.64ms IncrementalHoareTripleChecker+Time [2021-11-07 09:04:31,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 2288 Invalid, 1038 Unknown, 0 Unchecked, 11.85ms Time], IncrementalHoareTripleChecker [84 Valid, 948 Invalid, 6 Unknown, 0 Unchecked, 15498.64ms Time] [2021-11-07 09:04:31,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2021-11-07 09:04:31,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 730. [2021-11-07 09:04:31,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 711 states have (on average 1.1729957805907174) internal successors, (834), 729 states have internal predecessors, (834), 0 states have call successors, (0), 0 states 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 09:04:31,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 834 transitions. [2021-11-07 09:04:31,749 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 834 transitions. Word has length 122 [2021-11-07 09:04:31,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:04:31,750 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 834 transitions. [2021-11-07 09:04:31,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:31,750 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 834 transitions. [2021-11-07 09:04:31,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 09:04:31,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:04:31,751 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:31,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-07 09:04:31,752 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:04:31,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:04:31,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1334389522, now seen corresponding path program 1 times [2021-11-07 09:04:31,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:04:31,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646276940] [2021-11-07 09:04:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:04:31,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:04:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:04:33,316 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 09:04:33,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:04:33,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646276940] [2021-11-07 09:04:33,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646276940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:04:33,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:04:33,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 09:04:33,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903732804] [2021-11-07 09:04:33,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:04:33,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:04:33,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:04:33,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:04:33,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:04:33,318 INFO L87 Difference]: Start difference. First operand 730 states and 834 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:35,358 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:37,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:40,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:04:40,977 INFO L93 Difference]: Finished difference Result 1776 states and 2046 transitions. [2021-11-07 09:04:40,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 09:04:40,978 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 09:04:40,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:04:40,981 INFO L225 Difference]: With dead ends: 1776 [2021-11-07 09:04:40,981 INFO L226 Difference]: Without dead ends: 1220 [2021-11-07 09:04:40,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1146.20ms TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2021-11-07 09:04:40,982 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 1933 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 90 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6357.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1933 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.40ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6738.40ms IncrementalHoareTripleChecker+Time [2021-11-07 09:04:40,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1933 Valid, 2285 Invalid, 866 Unknown, 0 Unchecked, 13.40ms Time], IncrementalHoareTripleChecker [90 Valid, 774 Invalid, 2 Unknown, 0 Unchecked, 6738.40ms Time] [2021-11-07 09:04:40,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-11-07 09:04:41,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 730. [2021-11-07 09:04:41,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 711 states have (on average 1.170182841068917) internal successors, (832), 729 states have internal predecessors, (832), 0 states have call successors, (0), 0 states 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 09:04:41,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 832 transitions. [2021-11-07 09:04:41,006 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 832 transitions. Word has length 125 [2021-11-07 09:04:41,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:04:41,006 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 832 transitions. [2021-11-07 09:04:41,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:41,007 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 832 transitions. [2021-11-07 09:04:41,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 09:04:41,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:04:41,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:04:41,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-07 09:04:41,008 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:04:41,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:04:41,008 INFO L85 PathProgramCache]: Analyzing trace with hash -804839302, now seen corresponding path program 1 times [2021-11-07 09:04:41,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:04:41,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782056905] [2021-11-07 09:04:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:04:41,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:04:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:04:43,463 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 09:04:43,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:04:43,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782056905] [2021-11-07 09:04:43,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782056905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:04:43,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:04:43,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 09:04:43,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193150513] [2021-11-07 09:04:43,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:04:43,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 09:04:43,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:04:43,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 09:04:43,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-11-07 09:04:43,465 INFO L87 Difference]: Start difference. First operand 730 states and 832 transitions. Second operand has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:45,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:47,644 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:49,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:51,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:54,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:56,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:58,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:00,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:02,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:04,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:06,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:08,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:11,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:05:27,027 INFO L93 Difference]: Finished difference Result 1834 states and 2066 transitions. [2021-11-07 09:05:27,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-07 09:05:27,028 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 09:05:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:05:27,031 INFO L225 Difference]: With dead ends: 1834 [2021-11-07 09:05:27,031 INFO L226 Difference]: Without dead ends: 1502 [2021-11-07 09:05:27,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 9722.56ms TimeCoverageRelationStatistics Valid=922, Invalid=3368, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 09:05:27,034 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 2820 mSDsluCounter, 5901 mSDsCounter, 0 mSdLazyCounter, 2569 mSolverCounterSat, 115 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32495.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2820 SdHoareTripleChecker+Valid, 6406 SdHoareTripleChecker+Invalid, 2697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.98ms SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2569 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34602.58ms IncrementalHoareTripleChecker+Time [2021-11-07 09:05:27,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2820 Valid, 6406 Invalid, 2697 Unknown, 0 Unchecked, 25.98ms Time], IncrementalHoareTripleChecker [115 Valid, 2569 Invalid, 13 Unknown, 0 Unchecked, 34602.58ms Time] [2021-11-07 09:05:27,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-11-07 09:05:27,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 732. [2021-11-07 09:05:27,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 713 states have (on average 1.1697054698457223) internal successors, (834), 731 states have internal predecessors, (834), 0 states have call successors, (0), 0 states 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 09:05:27,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 834 transitions. [2021-11-07 09:05:27,063 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 834 transitions. Word has length 125 [2021-11-07 09:05:27,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:05:27,064 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 834 transitions. [2021-11-07 09:05:27,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:27,064 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 834 transitions. [2021-11-07 09:05:27,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 09:05:27,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:05:27,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:05:27,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-07 09:05:27,066 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:05:27,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:05:27,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1579085436, now seen corresponding path program 1 times [2021-11-07 09:05:27,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:05:27,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477535967] [2021-11-07 09:05:27,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:05:27,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:05:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:05:28,641 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 09:05:28,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:05:28,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477535967] [2021-11-07 09:05:28,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477535967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:05:28,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:05:28,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 09:05:28,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094852070] [2021-11-07 09:05:28,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:05:28,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 09:05:28,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:05:28,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 09:05:28,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:05:28,642 INFO L87 Difference]: Start difference. First operand 732 states and 834 transitions. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:30,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:32,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:34,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:37,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:41,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:05:41,168 INFO L93 Difference]: Finished difference Result 1607 states and 1856 transitions. [2021-11-07 09:05:41,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 09:05:41,168 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 09:05:41,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:05:41,173 INFO L225 Difference]: With dead ends: 1607 [2021-11-07 09:05:41,173 INFO L226 Difference]: Without dead ends: 1390 [2021-11-07 09:05:41,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1561.72ms TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-11-07 09:05:41,174 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 1166 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 68 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10571.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.83ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11210.31ms IncrementalHoareTripleChecker+Time [2021-11-07 09:05:41,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1166 Valid, 2975 Invalid, 1146 Unknown, 0 Unchecked, 9.83ms Time], IncrementalHoareTripleChecker [68 Valid, 1074 Invalid, 4 Unknown, 0 Unchecked, 11210.31ms Time] [2021-11-07 09:05:41,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2021-11-07 09:05:41,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 741. [2021-11-07 09:05:41,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 722 states have (on average 1.1689750692520775) internal successors, (844), 740 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 09:05:41,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 844 transitions. [2021-11-07 09:05:41,207 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 844 transitions. Word has length 125 [2021-11-07 09:05:41,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:05:41,207 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 844 transitions. [2021-11-07 09:05:41,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:41,208 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 844 transitions. [2021-11-07 09:05:41,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 09:05:41,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:05:41,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:05:41,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-07 09:05:41,209 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:05:41,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:05:41,210 INFO L85 PathProgramCache]: Analyzing trace with hash 549726138, now seen corresponding path program 1 times [2021-11-07 09:05:41,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:05:41,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983609453] [2021-11-07 09:05:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:05:41,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:05:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:05:46,364 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 09:05:46,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:05:46,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983609453] [2021-11-07 09:05:46,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983609453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:05:46,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:05:46,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 09:05:46,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922311448] [2021-11-07 09:05:46,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:05:46,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:05:46,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:05:46,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:05:46,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:05:46,366 INFO L87 Difference]: Start difference. First operand 741 states and 844 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:48,439 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:50,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:52,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:56,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:05:56,098 INFO L93 Difference]: Finished difference Result 1230 states and 1410 transitions. [2021-11-07 09:05:56,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 09:05:56,098 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 09:05:56,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:05:56,105 INFO L225 Difference]: With dead ends: 1230 [2021-11-07 09:05:56,105 INFO L226 Difference]: Without dead ends: 1068 [2021-11-07 09:05:56,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1675.10ms TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2021-11-07 09:05:56,106 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 2164 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 71 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8041.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.96ms SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8491.58ms IncrementalHoareTripleChecker+Time [2021-11-07 09:05:56,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2164 Valid, 1561 Invalid, 798 Unknown, 0 Unchecked, 9.96ms Time], IncrementalHoareTripleChecker [71 Valid, 724 Invalid, 3 Unknown, 0 Unchecked, 8491.58ms Time] [2021-11-07 09:05:56,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-07 09:05:56,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 782. [2021-11-07 09:05:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 763 states have (on average 1.1703800786369594) internal successors, (893), 781 states have internal predecessors, (893), 0 states have call successors, (0), 0 states 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 09:05:56,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 893 transitions. [2021-11-07 09:05:56,133 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 893 transitions. Word has length 125 [2021-11-07 09:05:56,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:05:56,133 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 893 transitions. [2021-11-07 09:05:56,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:56,133 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 893 transitions. [2021-11-07 09:05:56,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 09:05:56,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:05:56,134 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:56,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-07 09:05:56,134 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:05:56,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:05:56,135 INFO L85 PathProgramCache]: Analyzing trace with hash 807891576, now seen corresponding path program 1 times [2021-11-07 09:05:56,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:05:56,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274518011] [2021-11-07 09:05:56,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:05:56,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:05:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:05:57,408 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 09:05:57,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:05:57,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274518011] [2021-11-07 09:05:57,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274518011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:05:57,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:05:57,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:05:57,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391843364] [2021-11-07 09:05:57,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:05:57,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:05:57,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:05:57,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:05:57,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:05:57,411 INFO L87 Difference]: Start difference. First operand 782 states and 893 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:59,453 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:01,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:03,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:05,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:09,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:06:09,359 INFO L93 Difference]: Finished difference Result 1262 states and 1438 transitions. [2021-11-07 09:06:09,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 09:06:09,359 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 09:06:09,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:06:09,361 INFO L225 Difference]: With dead ends: 1262 [2021-11-07 09:06:09,361 INFO L226 Difference]: Without dead ends: 1109 [2021-11-07 09:06:09,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1126.87ms TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:06:09,363 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 1103 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 57 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10363.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.83ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10973.21ms IncrementalHoareTripleChecker+Time [2021-11-07 09:06:09,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 1733 Invalid, 923 Unknown, 0 Unchecked, 9.83ms Time], IncrementalHoareTripleChecker [57 Valid, 862 Invalid, 4 Unknown, 0 Unchecked, 10973.21ms Time] [2021-11-07 09:06:09,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-11-07 09:06:09,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 782. [2021-11-07 09:06:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 763 states have (on average 1.1690694626474443) internal successors, (892), 781 states have internal predecessors, (892), 0 states have call successors, (0), 0 states 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 09:06:09,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 892 transitions. [2021-11-07 09:06:09,398 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 892 transitions. Word has length 125 [2021-11-07 09:06:09,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:06:09,398 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 892 transitions. [2021-11-07 09:06:09,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:06:09,398 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 892 transitions. [2021-11-07 09:06:09,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 09:06:09,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:06:09,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:06:09,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-07 09:06:09,400 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:06:09,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:06:09,400 INFO L85 PathProgramCache]: Analyzing trace with hash -883284044, now seen corresponding path program 1 times [2021-11-07 09:06:09,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:06:09,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548457256] [2021-11-07 09:06:09,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:06:09,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:06:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:06:10,887 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 09:06:10,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:06:10,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548457256] [2021-11-07 09:06:10,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548457256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:06:10,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:06:10,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 09:06:10,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728527137] [2021-11-07 09:06:10,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:06:10,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 09:06:10,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:06:10,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 09:06:10,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:06:10,888 INFO L87 Difference]: Start difference. First operand 782 states and 892 transitions. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:06:12,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:15,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:17,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:19,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:21,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:06:21,584 INFO L93 Difference]: Finished difference Result 1188 states and 1363 transitions. [2021-11-07 09:06:21,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 09:06:21,585 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 09:06:21,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:06:21,587 INFO L225 Difference]: With dead ends: 1188 [2021-11-07 09:06:21,587 INFO L226 Difference]: Without dead ends: 1040 [2021-11-07 09:06:21,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 559.37ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-07 09:06:21,587 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 740 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 37 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9750.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.17ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10296.20ms IncrementalHoareTripleChecker+Time [2021-11-07 09:06:21,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [740 Valid, 1887 Invalid, 787 Unknown, 0 Unchecked, 6.17ms Time], IncrementalHoareTripleChecker [37 Valid, 746 Invalid, 4 Unknown, 0 Unchecked, 10296.20ms Time] [2021-11-07 09:06:21,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2021-11-07 09:06:21,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 789. [2021-11-07 09:06:21,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 770 states have (on average 1.1688311688311688) internal successors, (900), 788 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 09:06:21,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 900 transitions. [2021-11-07 09:06:21,619 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 900 transitions. Word has length 125 [2021-11-07 09:06:21,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:06:21,620 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 900 transitions. [2021-11-07 09:06:21,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:06:21,620 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 900 transitions. [2021-11-07 09:06:21,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 09:06:21,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:06:21,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:06:21,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-07 09:06:21,622 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:06:21,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:06:21,622 INFO L85 PathProgramCache]: Analyzing trace with hash -203225674, now seen corresponding path program 1 times [2021-11-07 09:06:21,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:06:21,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529876804] [2021-11-07 09:06:21,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:06:21,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:06:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:06:22,739 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 09:06:22,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:06:22,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529876804] [2021-11-07 09:06:22,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529876804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:06:22,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:06:22,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:06:22,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220230680] [2021-11-07 09:06:22,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:06:22,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:06:22,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:06:22,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:06:22,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:06:22,741 INFO L87 Difference]: Start difference. First operand 789 states and 900 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:06:24,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:25,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:06:25,794 INFO L93 Difference]: Finished difference Result 1205 states and 1386 transitions. [2021-11-07 09:06:25,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:06:25,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 09:06:25,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:06:25,796 INFO L225 Difference]: With dead ends: 1205 [2021-11-07 09:06:25,796 INFO L226 Difference]: Without dead ends: 969 [2021-11-07 09:06:25,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 61.93ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:06:25,797 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 508 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2817.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.90ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2979.68ms IncrementalHoareTripleChecker+Time [2021-11-07 09:06:25,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 992 Invalid, 338 Unknown, 0 Unchecked, 2.90ms Time], IncrementalHoareTripleChecker [45 Valid, 292 Invalid, 1 Unknown, 0 Unchecked, 2979.68ms Time] [2021-11-07 09:06:25,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2021-11-07 09:06:25,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 789. [2021-11-07 09:06:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 770 states have (on average 1.1597402597402597) internal successors, (893), 788 states have internal predecessors, (893), 0 states have call successors, (0), 0 states 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 09:06:25,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 893 transitions. [2021-11-07 09:06:25,824 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 893 transitions. Word has length 125 [2021-11-07 09:06:25,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:06:25,824 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 893 transitions. [2021-11-07 09:06:25,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:06:25,825 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 893 transitions. [2021-11-07 09:06:25,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 09:06:25,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:06:25,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:06:25,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-07 09:06:25,826 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:06:25,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:06:25,827 INFO L85 PathProgramCache]: Analyzing trace with hash 563107244, now seen corresponding path program 1 times [2021-11-07 09:06:25,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:06:25,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038651314] [2021-11-07 09:06:25,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:06:25,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:06:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:06:28,370 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 09:06:28,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:06:28,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038651314] [2021-11-07 09:06:28,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038651314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:06:28,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:06:28,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-07 09:06:28,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904695554] [2021-11-07 09:06:28,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:06:28,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 09:06:28,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:06:28,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 09:06:28,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:06:28,372 INFO L87 Difference]: Start difference. First operand 789 states and 893 transitions. Second operand has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:06:30,415 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:32,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:34,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:36,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:38,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:41,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:43,117 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:45,218 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:59,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:06:59,059 INFO L93 Difference]: Finished difference Result 2211 states and 2469 transitions. [2021-11-07 09:06:59,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-07 09:06:59,059 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 09:06:59,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:06:59,062 INFO L225 Difference]: With dead ends: 2211 [2021-11-07 09:06:59,062 INFO L226 Difference]: Without dead ends: 1910 [2021-11-07 09:06:59,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1671 ImplicationChecksByTransitivity, 7064.26ms TimeCoverageRelationStatistics Valid=975, Invalid=4427, Unknown=0, NotChecked=0, Total=5402 [2021-11-07 09:06:59,064 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 4359 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 2604 mSolverCounterSat, 193 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22939.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 5102 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.85ms SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 2604 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24275.93ms IncrementalHoareTripleChecker+Time [2021-11-07 09:06:59,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4359 Valid, 5102 Invalid, 2805 Unknown, 0 Unchecked, 30.85ms Time], IncrementalHoareTripleChecker [193 Valid, 2604 Invalid, 8 Unknown, 0 Unchecked, 24275.93ms Time] [2021-11-07 09:06:59,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2021-11-07 09:06:59,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 789. [2021-11-07 09:06:59,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 770 states have (on average 1.1584415584415584) internal successors, (892), 788 states have internal predecessors, (892), 0 states have call successors, (0), 0 states 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 09:06:59,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 892 transitions. [2021-11-07 09:06:59,094 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 892 transitions. Word has length 125 [2021-11-07 09:06:59,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:06:59,095 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 892 transitions. [2021-11-07 09:06:59,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:06:59,095 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 892 transitions. [2021-11-07 09:06:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 09:06:59,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:06:59,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:06:59,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-07 09:06:59,097 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:06:59,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:06:59,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1808632018, now seen corresponding path program 1 times [2021-11-07 09:06:59,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:06:59,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534931012] [2021-11-07 09:06:59,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:06:59,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:07:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:07:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:07:00,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:07:00,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534931012] [2021-11-07 09:07:00,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534931012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:07:00,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:07:00,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:07:00,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872832744] [2021-11-07 09:07:00,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:07:00,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:07:00,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:07:00,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:07:00,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:07:00,577 INFO L87 Difference]: Start difference. First operand 789 states and 892 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:07:02,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:04,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:06,819 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:08,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:11,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:07:11,933 INFO L93 Difference]: Finished difference Result 1614 states and 1815 transitions. [2021-11-07 09:07:11,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 09:07:11,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 09:07:11,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:07:11,935 INFO L225 Difference]: With dead ends: 1614 [2021-11-07 09:07:11,935 INFO L226 Difference]: Without dead ends: 1259 [2021-11-07 09:07:11,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1004.67ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-11-07 09:07:11,936 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 815 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 59 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9963.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.35ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10468.22ms IncrementalHoareTripleChecker+Time [2021-11-07 09:07:11,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 1728 Invalid, 891 Unknown, 0 Unchecked, 7.35ms Time], IncrementalHoareTripleChecker [59 Valid, 828 Invalid, 4 Unknown, 0 Unchecked, 10468.22ms Time] [2021-11-07 09:07:11,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2021-11-07 09:07:11,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 844. [2021-11-07 09:07:11,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 825 states have (on average 1.153939393939394) internal successors, (952), 843 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 09:07:11,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 952 transitions. [2021-11-07 09:07:11,964 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 952 transitions. Word has length 125 [2021-11-07 09:07:11,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:07:11,964 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 952 transitions. [2021-11-07 09:07:11,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:07:11,964 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 952 transitions. [2021-11-07 09:07:11,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 09:07:11,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:07:11,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:11,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-07 09:07:11,965 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:07:11,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:07:11,966 INFO L85 PathProgramCache]: Analyzing trace with hash -2061682768, now seen corresponding path program 1 times [2021-11-07 09:07:11,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:07:11,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415009401] [2021-11-07 09:07:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:07:11,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:07:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:07:16,535 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 09:07:16,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:07:16,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415009401] [2021-11-07 09:07:16,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415009401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:07:16,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:07:16,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 09:07:16,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881941459] [2021-11-07 09:07:16,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:07:16,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 09:07:16,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:07:16,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 09:07:16,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:07:16,537 INFO L87 Difference]: Start difference. First operand 844 states and 952 transitions. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:07:18,580 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:20,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:22,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:24,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:27,075 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:28,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:07:28,602 INFO L93 Difference]: Finished difference Result 1436 states and 1620 transitions. [2021-11-07 09:07:28,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 09:07:28,603 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 09:07:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:07:28,604 INFO L225 Difference]: With dead ends: 1436 [2021-11-07 09:07:28,604 INFO L226 Difference]: Without dead ends: 906 [2021-11-07 09:07:28,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 823.17ms TimeCoverageRelationStatistics Valid=109, Invalid=197, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:07:28,605 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 882 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 43 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10808.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.13ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11466.70ms IncrementalHoareTripleChecker+Time [2021-11-07 09:07:28,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 1492 Invalid, 339 Unknown, 0 Unchecked, 4.13ms Time], IncrementalHoareTripleChecker [43 Valid, 291 Invalid, 5 Unknown, 0 Unchecked, 11466.70ms Time] [2021-11-07 09:07:28,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2021-11-07 09:07:28,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 825. [2021-11-07 09:07:28,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 806 states have (on average 1.1550868486352357) internal successors, (931), 824 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 09:07:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 931 transitions. [2021-11-07 09:07:28,638 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 931 transitions. Word has length 125 [2021-11-07 09:07:28,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:07:28,638 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 931 transitions. [2021-11-07 09:07:28,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:07:28,639 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 931 transitions. [2021-11-07 09:07:28,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-07 09:07:28,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:07:28,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:07:28,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-07 09:07:28,640 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:07:28,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:07:28,641 INFO L85 PathProgramCache]: Analyzing trace with hash -656934112, now seen corresponding path program 1 times [2021-11-07 09:07:28,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:07:28,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712318424] [2021-11-07 09:07:28,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:07:28,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:07:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:07:28,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:07:28,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:07:28,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712318424] [2021-11-07 09:07:28,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712318424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:07:28,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:07:28,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:07:28,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098291218] [2021-11-07 09:07:28,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:07:28,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:07:28,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:07:28,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:07:28,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:07:28,892 INFO L87 Difference]: Start difference. First operand 825 states and 931 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 09:07:29,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:07:29,002 INFO L93 Difference]: Finished difference Result 1087 states and 1225 transitions. [2021-11-07 09:07:29,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:07:29,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2021-11-07 09:07:29,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:07:29,004 INFO L225 Difference]: With dead ends: 1087 [2021-11-07 09:07:29,004 INFO L226 Difference]: Without dead ends: 923 [2021-11-07 09:07:29,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.80ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:07:29,005 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 201 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.72ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.67ms IncrementalHoareTripleChecker+Time [2021-11-07 09:07:29,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 1349 Invalid, 16 Unknown, 0 Unchecked, 0.72ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 42.67ms Time] [2021-11-07 09:07:29,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-11-07 09:07:29,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 812. [2021-11-07 09:07:29,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 793 states have (on average 1.146279949558638) internal successors, (909), 811 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 09:07:29,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 909 transitions. [2021-11-07 09:07:29,031 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 909 transitions. Word has length 126 [2021-11-07 09:07:29,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:07:29,032 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 909 transitions. [2021-11-07 09:07:29,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 09:07:29,032 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 909 transitions. [2021-11-07 09:07:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 09:07:29,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:07:29,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:07:29,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-07 09:07:29,033 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:07:29,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:07:29,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1112159657, now seen corresponding path program 1 times [2021-11-07 09:07:29,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:07:29,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726440966] [2021-11-07 09:07:29,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:07:29,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:07:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:07:29,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:07:29,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:07:29,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726440966] [2021-11-07 09:07:29,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726440966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:07:29,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:07:29,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:07:29,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827350191] [2021-11-07 09:07:29,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:07:29,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:07:29,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:07:29,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:07:29,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:07:29,493 INFO L87 Difference]: Start difference. First operand 812 states and 909 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:07:30,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:07:30,016 INFO L93 Difference]: Finished difference Result 877 states and 984 transitions. [2021-11-07 09:07:30,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:07:30,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-07 09:07:30,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:07:30,018 INFO L225 Difference]: With dead ends: 877 [2021-11-07 09:07:30,018 INFO L226 Difference]: Without dead ends: 875 [2021-11-07 09:07:30,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 266.72ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:07:30,019 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 1179 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 318.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.35ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 342.40ms IncrementalHoareTripleChecker+Time [2021-11-07 09:07:30,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 941 Invalid, 120 Unknown, 0 Unchecked, 2.35ms Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 342.40ms Time] [2021-11-07 09:07:30,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-11-07 09:07:30,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 810. [2021-11-07 09:07:30,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 792 states have (on average 1.143939393939394) internal successors, (906), 809 states have internal predecessors, (906), 0 states have call successors, (0), 0 states 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 09:07:30,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 906 transitions. [2021-11-07 09:07:30,047 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 906 transitions. Word has length 127 [2021-11-07 09:07:30,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:07:30,047 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 906 transitions. [2021-11-07 09:07:30,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:07:30,048 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 906 transitions. [2021-11-07 09:07:30,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 09:07:30,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:07:30,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:07:30,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-07 09:07:30,049 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:07:30,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:07:30,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1610310257, now seen corresponding path program 1 times [2021-11-07 09:07:30,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:07:30,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229013794] [2021-11-07 09:07:30,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:07:30,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:07:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:07:30,547 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 09:07:30,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:07:30,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229013794] [2021-11-07 09:07:30,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229013794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:07:30,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:07:30,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:07:30,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746412412] [2021-11-07 09:07:30,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:07:30,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:07:30,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:07:30,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:07:30,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:07:30,548 INFO L87 Difference]: Start difference. First operand 810 states and 906 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:07:32,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:07:32,428 INFO L93 Difference]: Finished difference Result 1171 states and 1304 transitions. [2021-11-07 09:07:32,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 09:07:32,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-07 09:07:32,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:07:32,430 INFO L225 Difference]: With dead ends: 1171 [2021-11-07 09:07:32,430 INFO L226 Difference]: Without dead ends: 1163 [2021-11-07 09:07:32,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 516.76ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:07:32,431 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 414 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1344.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.13ms SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1430.70ms IncrementalHoareTripleChecker+Time [2021-11-07 09:07:32,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 1778 Invalid, 657 Unknown, 0 Unchecked, 6.13ms Time], IncrementalHoareTripleChecker [154 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 1430.70ms Time] [2021-11-07 09:07:32,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2021-11-07 09:07:32,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 822. [2021-11-07 09:07:32,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 804 states have (on average 1.1417910447761195) internal successors, (918), 821 states have internal predecessors, (918), 0 states have call successors, (0), 0 states 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 09:07:32,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 918 transitions. [2021-11-07 09:07:32,462 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 918 transitions. Word has length 127 [2021-11-07 09:07:32,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:07:32,462 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 918 transitions. [2021-11-07 09:07:32,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:07:32,462 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 918 transitions. [2021-11-07 09:07:32,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 09:07:32,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:07:32,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:07:32,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-07 09:07:32,463 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:07:32,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:07:32,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1875310413, now seen corresponding path program 1 times [2021-11-07 09:07:32,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:07:32,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776252871] [2021-11-07 09:07:32,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:07:32,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:07:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:07:34,193 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 09:07:34,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:07:34,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776252871] [2021-11-07 09:07:34,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776252871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:07:34,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:07:34,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:07:34,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971680904] [2021-11-07 09:07:34,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:07:34,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:07:34,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:07:34,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:07:34,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:07:34,195 INFO L87 Difference]: Start difference. First operand 822 states and 918 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:07:36,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:38,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:40,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:07:40,163 INFO L93 Difference]: Finished difference Result 1253 states and 1393 transitions. [2021-11-07 09:07:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:07:40,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-07 09:07:40,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:07:40,165 INFO L225 Difference]: With dead ends: 1253 [2021-11-07 09:07:40,165 INFO L226 Difference]: Without dead ends: 1128 [2021-11-07 09:07:40,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 539.34ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:07:40,166 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 897 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 40 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5321.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.21ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5629.59ms IncrementalHoareTripleChecker+Time [2021-11-07 09:07:40,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 1318 Invalid, 529 Unknown, 0 Unchecked, 5.21ms Time], IncrementalHoareTripleChecker [40 Valid, 487 Invalid, 2 Unknown, 0 Unchecked, 5629.59ms Time] [2021-11-07 09:07:40,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-11-07 09:07:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 823. [2021-11-07 09:07:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 805 states have (on average 1.141614906832298) internal successors, (919), 822 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 09:07:40,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 919 transitions. [2021-11-07 09:07:40,196 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 919 transitions. Word has length 127 [2021-11-07 09:07:40,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:07:40,196 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 919 transitions. [2021-11-07 09:07:40,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:07:40,196 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 919 transitions. [2021-11-07 09:07:40,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-07 09:07:40,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:07:40,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:07:40,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-07 09:07:40,197 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:07:40,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:07:40,198 INFO L85 PathProgramCache]: Analyzing trace with hash -661280949, now seen corresponding path program 1 times [2021-11-07 09:07:40,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:07:40,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715033977] [2021-11-07 09:07:40,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:07:40,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:07:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:07:46,420 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 09:07:46,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:07:46,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715033977] [2021-11-07 09:07:46,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715033977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:07:46,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:07:46,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-07 09:07:46,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127288142] [2021-11-07 09:07:46,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:07:46,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 09:07:46,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:07:46,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 09:07:46,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-11-07 09:07:46,422 INFO L87 Difference]: Start difference. First operand 823 states and 919 transitions. Second operand has 23 states, 23 states have (on average 5.608695652173913) internal successors, (129), 23 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:07:48,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:50,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:52,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:54,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:56,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:59,100 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:01,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:03,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:05,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:07,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:09,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:11,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:14,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:23,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:08:23,343 INFO L93 Difference]: Finished difference Result 1592 states and 1766 transitions. [2021-11-07 09:08:23,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 09:08:23,343 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.608695652173913) internal successors, (129), 23 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-07 09:08:23,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:08:23,346 INFO L225 Difference]: With dead ends: 1592 [2021-11-07 09:08:23,346 INFO L226 Difference]: Without dead ends: 1590 [2021-11-07 09:08:23,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 5059.67ms TimeCoverageRelationStatistics Valid=400, Invalid=1762, Unknown=0, NotChecked=0, Total=2162 [2021-11-07 09:08:23,348 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 3605 mSDsluCounter, 4226 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 135 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31380.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3605 SdHoareTripleChecker+Valid, 4554 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.96ms SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33314.53ms IncrementalHoareTripleChecker+Time [2021-11-07 09:08:23,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3605 Valid, 4554 Invalid, 2326 Unknown, 0 Unchecked, 22.96ms Time], IncrementalHoareTripleChecker [135 Valid, 2178 Invalid, 13 Unknown, 0 Unchecked, 33314.53ms Time] [2021-11-07 09:08:23,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-11-07 09:08:23,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1023. [2021-11-07 09:08:23,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1005 states have (on average 1.137313432835821) internal successors, (1143), 1022 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states 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 09:08:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1143 transitions. [2021-11-07 09:08:23,400 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1143 transitions. Word has length 129 [2021-11-07 09:08:23,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:08:23,401 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 1143 transitions. [2021-11-07 09:08:23,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.608695652173913) internal successors, (129), 23 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:08:23,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1143 transitions. [2021-11-07 09:08:23,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 09:08:23,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:08:23,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:08:23,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-07 09:08:23,403 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:08:23,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:08:23,403 INFO L85 PathProgramCache]: Analyzing trace with hash 536932685, now seen corresponding path program 1 times [2021-11-07 09:08:23,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:08:23,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093864709] [2021-11-07 09:08:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:08:23,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:08:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:08:25,021 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 09:08:25,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:08:25,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093864709] [2021-11-07 09:08:25,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093864709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:08:25,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:08:25,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:08:25,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667706249] [2021-11-07 09:08:25,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:08:25,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:08:25,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:08:25,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:08:25,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:08:25,023 INFO L87 Difference]: Start difference. First operand 1023 states and 1143 transitions. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:08:27,064 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:29,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:31,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:08:31,905 INFO L93 Difference]: Finished difference Result 1981 states and 2236 transitions. [2021-11-07 09:08:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 09:08:31,906 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-07 09:08:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:08:31,908 INFO L225 Difference]: With dead ends: 1981 [2021-11-07 09:08:31,908 INFO L226 Difference]: Without dead ends: 1728 [2021-11-07 09:08:31,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 633.12ms TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-11-07 09:08:31,909 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 728 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 39 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5896.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.95ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6300.01ms IncrementalHoareTripleChecker+Time [2021-11-07 09:08:31,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 2349 Invalid, 740 Unknown, 0 Unchecked, 7.95ms Time], IncrementalHoareTripleChecker [39 Valid, 699 Invalid, 2 Unknown, 0 Unchecked, 6300.01ms Time] [2021-11-07 09:08:31,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2021-11-07 09:08:31,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1021. [2021-11-07 09:08:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 1003 states have (on average 1.1375872382851446) internal successors, (1141), 1020 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states 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 09:08:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1141 transitions. [2021-11-07 09:08:31,960 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1141 transitions. Word has length 131 [2021-11-07 09:08:31,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:08:31,961 INFO L470 AbstractCegarLoop]: Abstraction has 1021 states and 1141 transitions. [2021-11-07 09:08:31,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:08:31,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1141 transitions. [2021-11-07 09:08:31,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 09:08:31,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:08:31,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:08:31,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-07 09:08:31,962 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:08:31,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:08:31,963 INFO L85 PathProgramCache]: Analyzing trace with hash 164313485, now seen corresponding path program 1 times [2021-11-07 09:08:31,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:08:31,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108227954] [2021-11-07 09:08:31,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:08:31,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:08:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:08:41,281 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 09:08:41,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:08:41,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108227954] [2021-11-07 09:08:41,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108227954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:08:41,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:08:41,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-07 09:08:41,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453725927] [2021-11-07 09:08:41,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:08:41,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 09:08:41,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:08:41,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 09:08:41,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2021-11-07 09:08:41,282 INFO L87 Difference]: Start difference. First operand 1021 states and 1141 transitions. Second operand has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:08:43,337 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:45,466 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:47,564 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:49,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:51,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:53,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:56,075 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:58,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:00,292 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:02,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:35,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:09:35,228 INFO L93 Difference]: Finished difference Result 2248 states and 2488 transitions. [2021-11-07 09:09:35,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-11-07 09:09:35,229 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-07 09:09:35,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:09:35,232 INFO L225 Difference]: With dead ends: 2248 [2021-11-07 09:09:35,232 INFO L226 Difference]: Without dead ends: 2133 [2021-11-07 09:09:35,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3463 ImplicationChecksByTransitivity, 28844.78ms TimeCoverageRelationStatistics Valid=1501, Invalid=9629, Unknown=0, NotChecked=0, Total=11130 [2021-11-07 09:09:35,235 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 3758 mSDsluCounter, 5544 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 389 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25458.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3758 SdHoareTripleChecker+Valid, 5883 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.22ms SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27034.09ms IncrementalHoareTripleChecker+Time [2021-11-07 09:09:35,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3758 Valid, 5883 Invalid, 2566 Unknown, 0 Unchecked, 27.22ms Time], IncrementalHoareTripleChecker [389 Valid, 2167 Invalid, 10 Unknown, 0 Unchecked, 27034.09ms Time] [2021-11-07 09:09:35,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2021-11-07 09:09:35,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 1226. [2021-11-07 09:09:35,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1208 states have (on average 1.1357615894039734) internal successors, (1372), 1225 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 09:09:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1372 transitions. [2021-11-07 09:09:35,311 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1372 transitions. Word has length 131 [2021-11-07 09:09:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:09:35,311 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 1372 transitions. [2021-11-07 09:09:35,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:09:35,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1372 transitions. [2021-11-07 09:09:35,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 09:09:35,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:09:35,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:09:35,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-07 09:09:35,314 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:09:35,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:09:35,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1512455157, now seen corresponding path program 1 times [2021-11-07 09:09:35,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:09:35,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142249274] [2021-11-07 09:09:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:09:35,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:09:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:09:42,555 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 09:09:42,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:09:42,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142249274] [2021-11-07 09:09:42,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142249274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:09:42,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:09:42,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 09:09:42,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573803974] [2021-11-07 09:09:42,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:09:42,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 09:09:42,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:09:42,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 09:09:42,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:09:42,556 INFO L87 Difference]: Start difference. First operand 1226 states and 1372 transitions. Second operand has 14 states, 14 states have (on average 9.357142857142858) internal successors, (131), 14 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:09:44,598 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:46,728 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:48,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:50,983 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:54,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:09:54,090 INFO L93 Difference]: Finished difference Result 1591 states and 1775 transitions. [2021-11-07 09:09:54,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 09:09:54,090 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.357142857142858) internal successors, (131), 14 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-07 09:09:54,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:09:54,091 INFO L225 Difference]: With dead ends: 1591 [2021-11-07 09:09:54,091 INFO L226 Difference]: Without dead ends: 967 [2021-11-07 09:09:54,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 2098.39ms TimeCoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 09:09:54,092 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 1018 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 75 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9295.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.11ms SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9885.78ms IncrementalHoareTripleChecker+Time [2021-11-07 09:09:54,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1018 Valid, 1772 Invalid, 634 Unknown, 0 Unchecked, 6.11ms Time], IncrementalHoareTripleChecker [75 Valid, 555 Invalid, 4 Unknown, 0 Unchecked, 9885.78ms Time] [2021-11-07 09:09:54,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2021-11-07 09:09:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 913. [2021-11-07 09:09:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 895 states have (on average 1.1430167597765364) internal successors, (1023), 912 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states 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 09:09:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1023 transitions. [2021-11-07 09:09:54,128 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1023 transitions. Word has length 131 [2021-11-07 09:09:54,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:09:54,128 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1023 transitions. [2021-11-07 09:09:54,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.357142857142858) internal successors, (131), 14 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:09:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1023 transitions. [2021-11-07 09:09:54,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 09:09:54,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:09:54,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:09:54,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-07 09:09:54,130 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:09:54,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:09:54,130 INFO L85 PathProgramCache]: Analyzing trace with hash 283881935, now seen corresponding path program 1 times [2021-11-07 09:09:54,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:09:54,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741644124] [2021-11-07 09:09:54,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:09:54,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:09:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:09:56,183 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 09:09:56,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:09:56,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741644124] [2021-11-07 09:09:56,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741644124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:09:56,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:09:56,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 09:09:56,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743035115] [2021-11-07 09:09:56,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:09:56,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 09:09:56,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:09:56,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 09:09:56,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:09:56,185 INFO L87 Difference]: Start difference. First operand 913 states and 1023 transitions. Second operand has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:09:58,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:00,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:02,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:04,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:06,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:12,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:10:12,307 INFO L93 Difference]: Finished difference Result 1560 states and 1747 transitions. [2021-11-07 09:10:12,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 09:10:12,308 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-07 09:10:12,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:10:12,310 INFO L225 Difference]: With dead ends: 1560 [2021-11-07 09:10:12,310 INFO L226 Difference]: Without dead ends: 1357 [2021-11-07 09:10:12,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2005.43ms TimeCoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 09:10:12,311 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 770 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 72 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13548.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.10ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14391.88ms IncrementalHoareTripleChecker+Time [2021-11-07 09:10:12,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 3004 Invalid, 1614 Unknown, 0 Unchecked, 12.10ms Time], IncrementalHoareTripleChecker [72 Valid, 1537 Invalid, 5 Unknown, 0 Unchecked, 14391.88ms Time] [2021-11-07 09:10:12,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2021-11-07 09:10:12,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 913. [2021-11-07 09:10:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 895 states have (on average 1.140782122905028) internal successors, (1021), 912 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:10:12,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1021 transitions. [2021-11-07 09:10:12,348 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1021 transitions. Word has length 131 [2021-11-07 09:10:12,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:10:12,348 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1021 transitions. [2021-11-07 09:10:12,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:10:12,349 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1021 transitions. [2021-11-07 09:10:12,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 09:10:12,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:10:12,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:10:12,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-07 09:10:12,350 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:10:12,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:10:12,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2087857327, now seen corresponding path program 1 times [2021-11-07 09:10:12,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:10:12,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855256827] [2021-11-07 09:10:12,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:10:12,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:10:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:10:16,008 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 09:10:16,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:10:16,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855256827] [2021-11-07 09:10:16,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855256827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:10:16,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:10:16,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-07 09:10:16,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835786676] [2021-11-07 09:10:16,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:10:16,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 09:10:16,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:10:16,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 09:10:16,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:10:16,010 INFO L87 Difference]: Start difference. First operand 913 states and 1021 transitions. Second operand has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:10:18,051 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:20,187 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:22,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:24,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:26,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:28,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:30,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:32,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:35,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:46,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:10:46,366 INFO L93 Difference]: Finished difference Result 1636 states and 1817 transitions. [2021-11-07 09:10:46,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 09:10:46,366 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-07 09:10:46,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:10:46,368 INFO L225 Difference]: With dead ends: 1636 [2021-11-07 09:10:46,368 INFO L226 Difference]: Without dead ends: 1431 [2021-11-07 09:10:46,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 6127.32ms TimeCoverageRelationStatistics Valid=517, Invalid=1835, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 09:10:46,370 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 1691 mSDsluCounter, 3886 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 109 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24017.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 4163 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.45ms SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2011 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25472.09ms IncrementalHoareTripleChecker+Time [2021-11-07 09:10:46,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1691 Valid, 4163 Invalid, 2129 Unknown, 0 Unchecked, 26.45ms Time], IncrementalHoareTripleChecker [109 Valid, 2011 Invalid, 9 Unknown, 0 Unchecked, 25472.09ms Time] [2021-11-07 09:10:46,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2021-11-07 09:10:46,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 883. [2021-11-07 09:10:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 865 states have (on average 1.1433526011560693) internal successors, (989), 882 states have internal predecessors, (989), 0 states have call successors, (0), 0 states 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 09:10:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 989 transitions. [2021-11-07 09:10:46,423 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 989 transitions. Word has length 131 [2021-11-07 09:10:46,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:10:46,423 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 989 transitions. [2021-11-07 09:10:46,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:10:46,424 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 989 transitions. [2021-11-07 09:10:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 09:10:46,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:10:46,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:10:46,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-07 09:10:46,425 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:10:46,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:10:46,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1587871297, now seen corresponding path program 1 times [2021-11-07 09:10:46,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:10:46,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105980922] [2021-11-07 09:10:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:10:46,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:10:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:10:50,820 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 09:10:50,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:10:50,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105980922] [2021-11-07 09:10:50,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105980922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:10:50,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:10:50,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 09:10:50,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526503418] [2021-11-07 09:10:50,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:10:50,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 09:10:50,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:10:50,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 09:10:50,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:10:50,822 INFO L87 Difference]: Start difference. First operand 883 states and 989 transitions. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:10:52,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:54,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:57,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:59,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:01,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:03,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:05,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:08,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:11:08,253 INFO L93 Difference]: Finished difference Result 1254 states and 1410 transitions. [2021-11-07 09:11:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 09:11:08,254 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-07 09:11:08,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:11:08,256 INFO L225 Difference]: With dead ends: 1254 [2021-11-07 09:11:08,256 INFO L226 Difference]: Without dead ends: 948 [2021-11-07 09:11:08,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1330.78ms TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2021-11-07 09:11:08,257 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 1153 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 70 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15459.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.90ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16458.89ms IncrementalHoareTripleChecker+Time [2021-11-07 09:11:08,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 1984 Invalid, 593 Unknown, 0 Unchecked, 7.90ms Time], IncrementalHoareTripleChecker [70 Valid, 516 Invalid, 7 Unknown, 0 Unchecked, 16458.89ms Time] [2021-11-07 09:11:08,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2021-11-07 09:11:08,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 813. [2021-11-07 09:11:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 795 states have (on average 1.1484276729559748) internal successors, (913), 812 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:11:08,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 913 transitions. [2021-11-07 09:11:08,299 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 913 transitions. Word has length 131 [2021-11-07 09:11:08,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:11:08,299 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 913 transitions. [2021-11-07 09:11:08,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:11:08,299 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 913 transitions. [2021-11-07 09:11:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 09:11:08,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:11:08,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:11:08,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-07 09:11:08,300 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:11:08,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:11:08,301 INFO L85 PathProgramCache]: Analyzing trace with hash -280841822, now seen corresponding path program 1 times [2021-11-07 09:11:08,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:11:08,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687798700] [2021-11-07 09:11:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:11:08,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:11:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:11:10,472 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 09:11:10,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:11:10,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687798700] [2021-11-07 09:11:10,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687798700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:11:10,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:11:10,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 09:11:10,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663105205] [2021-11-07 09:11:10,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:11:10,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 09:11:10,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:11:10,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 09:11:10,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:11:10,473 INFO L87 Difference]: Start difference. First operand 813 states and 913 transitions. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 09:11:12,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:14,644 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:16,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:25,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:11:25,266 INFO L93 Difference]: Finished difference Result 2003 states and 2246 transitions. [2021-11-07 09:11:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-07 09:11:25,267 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2021-11-07 09:11:25,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:11:25,269 INFO L225 Difference]: With dead ends: 2003 [2021-11-07 09:11:25,269 INFO L226 Difference]: Without dead ends: 1779 [2021-11-07 09:11:25,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1360 ImplicationChecksByTransitivity, 3589.24ms TimeCoverageRelationStatistics Valid=723, Invalid=3567, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 09:11:25,271 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 1330 mSDsluCounter, 3769 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 82 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10847.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 4297 SdHoareTripleChecker+Invalid, 2297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.36ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11474.73ms IncrementalHoareTripleChecker+Time [2021-11-07 09:11:25,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1330 Valid, 4297 Invalid, 2297 Unknown, 0 Unchecked, 18.36ms Time], IncrementalHoareTripleChecker [82 Valid, 2212 Invalid, 3 Unknown, 0 Unchecked, 11474.73ms Time] [2021-11-07 09:11:25,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2021-11-07 09:11:25,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 870. [2021-11-07 09:11:25,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 852 states have (on average 1.1490610328638498) internal successors, (979), 869 states have internal predecessors, (979), 0 states have call successors, (0), 0 states 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 09:11:25,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 979 transitions. [2021-11-07 09:11:25,310 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 979 transitions. Word has length 137 [2021-11-07 09:11:25,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:11:25,310 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 979 transitions. [2021-11-07 09:11:25,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 09:11:25,310 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 979 transitions. [2021-11-07 09:11:25,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 09:11:25,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:11:25,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:11:25,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-07 09:11:25,311 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:11:25,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:11:25,311 INFO L85 PathProgramCache]: Analyzing trace with hash -22676384, now seen corresponding path program 1 times [2021-11-07 09:11:25,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:11:25,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584763177] [2021-11-07 09:11:25,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:11:25,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:11:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:11:27,407 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 09:11:27,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:11:27,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584763177] [2021-11-07 09:11:27,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584763177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:11:27,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:11:27,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 09:11:27,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578674082] [2021-11-07 09:11:27,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:11:27,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 09:11:27,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:11:27,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 09:11:27,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-07 09:11:27,408 INFO L87 Difference]: Start difference. First operand 870 states and 979 transitions. Second operand has 16 states, 16 states have (on average 8.5625) internal successors, (137), 16 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 09:11:29,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:31,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:33,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:35,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:37,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:40,151 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:42,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:45,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:11:45,470 INFO L93 Difference]: Finished difference Result 1433 states and 1599 transitions. [2021-11-07 09:11:45,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 09:11:45,471 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.5625) internal successors, (137), 16 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2021-11-07 09:11:45,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:11:45,473 INFO L225 Difference]: With dead ends: 1433 [2021-11-07 09:11:45,473 INFO L226 Difference]: Without dead ends: 1092 [2021-11-07 09:11:45,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1476.52ms TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-11-07 09:11:45,474 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 1388 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 65 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15981.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.13ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17026.80ms IncrementalHoareTripleChecker+Time [2021-11-07 09:11:45,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 2084 Invalid, 819 Unknown, 0 Unchecked, 8.13ms Time], IncrementalHoareTripleChecker [65 Valid, 747 Invalid, 7 Unknown, 0 Unchecked, 17026.80ms Time] [2021-11-07 09:11:45,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2021-11-07 09:11:45,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 871. [2021-11-07 09:11:45,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 853 states have (on average 1.145369284876905) internal successors, (977), 870 states have internal predecessors, (977), 0 states have call successors, (0), 0 states 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 09:11:45,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 977 transitions. [2021-11-07 09:11:45,528 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 977 transitions. Word has length 137 [2021-11-07 09:11:45,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:11:45,529 INFO L470 AbstractCegarLoop]: Abstraction has 871 states and 977 transitions. [2021-11-07 09:11:45,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.5625) internal successors, (137), 16 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 09:11:45,530 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 977 transitions. [2021-11-07 09:11:45,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 09:11:45,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:11:45,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:11:45,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-07 09:11:45,531 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:11:45,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:11:45,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1718278240, now seen corresponding path program 1 times [2021-11-07 09:11:45,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:11:45,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907607644] [2021-11-07 09:11:45,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:11:45,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:11:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:11:47,439 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 09:11:47,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:11:47,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907607644] [2021-11-07 09:11:47,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907607644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:11:47,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:11:47,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:11:47,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19357312] [2021-11-07 09:11:47,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:11:47,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:11:47,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:11:47,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:11:47,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:11:47,440 INFO L87 Difference]: Start difference. First operand 871 states and 977 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 09:11:49,484 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:51,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:53,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:57,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:11:57,678 INFO L93 Difference]: Finished difference Result 2058 states and 2317 transitions. [2021-11-07 09:11:57,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:11:57,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2021-11-07 09:11:57,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:11:57,681 INFO L225 Difference]: With dead ends: 2058 [2021-11-07 09:11:57,681 INFO L226 Difference]: Without dead ends: 1670 [2021-11-07 09:11:57,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 737.00ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:11:57,681 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 770 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 33 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8959.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.49ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9540.85ms IncrementalHoareTripleChecker+Time [2021-11-07 09:11:57,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 2902 Invalid, 1058 Unknown, 0 Unchecked, 12.49ms Time], IncrementalHoareTripleChecker [33 Valid, 1022 Invalid, 3 Unknown, 0 Unchecked, 9540.85ms Time] [2021-11-07 09:11:57,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-11-07 09:11:57,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1038. [2021-11-07 09:11:57,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1020 states have (on average 1.1313725490196078) internal successors, (1154), 1037 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states 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 09:11:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1154 transitions. [2021-11-07 09:11:57,747 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1154 transitions. Word has length 137 [2021-11-07 09:11:57,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:11:57,747 INFO L470 AbstractCegarLoop]: Abstraction has 1038 states and 1154 transitions. [2021-11-07 09:11:57,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 09:11:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1154 transitions. [2021-11-07 09:11:57,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 09:11:57,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:11:57,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:57,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-07 09:11:57,749 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:11:57,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:11:57,750 INFO L85 PathProgramCache]: Analyzing trace with hash 299675036, now seen corresponding path program 1 times [2021-11-07 09:11:57,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:11:57,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391289792] [2021-11-07 09:11:57,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:11:57,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:11:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:11:59,653 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 09:11:59,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:11:59,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391289792] [2021-11-07 09:11:59,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391289792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:11:59,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:11:59,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:11:59,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128190192] [2021-11-07 09:11:59,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:11:59,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:11:59,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:11:59,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:11:59,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:11:59,655 INFO L87 Difference]: Start difference. First operand 1038 states and 1154 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 09:12:01,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:03,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:05,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:12:05,691 INFO L93 Difference]: Finished difference Result 1507 states and 1686 transitions. [2021-11-07 09:12:05,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:12:05,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2021-11-07 09:12:05,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:12:05,693 INFO L225 Difference]: With dead ends: 1507 [2021-11-07 09:12:05,693 INFO L226 Difference]: Without dead ends: 1376 [2021-11-07 09:12:05,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 369.07ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:12:05,693 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 616 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5429.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.38ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5744.93ms IncrementalHoareTripleChecker+Time [2021-11-07 09:12:05,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 1915 Invalid, 638 Unknown, 0 Unchecked, 5.38ms Time], IncrementalHoareTripleChecker [19 Valid, 617 Invalid, 2 Unknown, 0 Unchecked, 5744.93ms Time] [2021-11-07 09:12:05,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-11-07 09:12:05,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1084. [2021-11-07 09:12:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 1066 states have (on average 1.1360225140712945) internal successors, (1211), 1083 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states 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 09:12:05,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1211 transitions. [2021-11-07 09:12:05,740 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1211 transitions. Word has length 137 [2021-11-07 09:12:05,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:12:05,740 INFO L470 AbstractCegarLoop]: Abstraction has 1084 states and 1211 transitions. [2021-11-07 09:12:05,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 09:12:05,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1211 transitions. [2021-11-07 09:12:05,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 09:12:05,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:12:05,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:12:05,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-07 09:12:05,742 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:12:05,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:12:05,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1391500584, now seen corresponding path program 1 times [2021-11-07 09:12:05,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:12:05,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424182175] [2021-11-07 09:12:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:12:05,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:12:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:12:07,508 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 09:12:07,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:12:07,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424182175] [2021-11-07 09:12:07,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424182175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:12:07,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:12:07,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:12:07,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971653829] [2021-11-07 09:12:07,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:12:07,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:12:07,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:12:07,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:12:07,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:12:07,509 INFO L87 Difference]: Start difference. First operand 1084 states and 1211 transitions. Second operand has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 09:12:09,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:11,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:13,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:16,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:12:16,724 INFO L93 Difference]: Finished difference Result 1500 states and 1676 transitions. [2021-11-07 09:12:16,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 09:12:16,725 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2021-11-07 09:12:16,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:12:16,726 INFO L225 Difference]: With dead ends: 1500 [2021-11-07 09:12:16,726 INFO L226 Difference]: Without dead ends: 1376 [2021-11-07 09:12:16,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 569.58ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-07 09:12:16,727 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 626 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 33 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8152.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.91ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8679.74ms IncrementalHoareTripleChecker+Time [2021-11-07 09:12:16,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 2180 Invalid, 760 Unknown, 0 Unchecked, 9.91ms Time], IncrementalHoareTripleChecker [33 Valid, 724 Invalid, 3 Unknown, 0 Unchecked, 8679.74ms Time] [2021-11-07 09:12:16,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-11-07 09:12:16,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1091. [2021-11-07 09:12:16,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1073 states have (on average 1.135135135135135) internal successors, (1218), 1090 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 09:12:16,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1218 transitions. [2021-11-07 09:12:16,774 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1218 transitions. Word has length 137 [2021-11-07 09:12:16,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:12:16,775 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 1218 transitions. [2021-11-07 09:12:16,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 09:12:16,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1218 transitions. [2021-11-07 09:12:16,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 09:12:16,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:12:16,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:12:16,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-07 09:12:16,777 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:12:16,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:12:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2072064226, now seen corresponding path program 1 times [2021-11-07 09:12:16,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:12:16,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959427322] [2021-11-07 09:12:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:12:16,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:12:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:12:19,781 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 09:12:19,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:12:19,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959427322] [2021-11-07 09:12:19,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959427322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:12:19,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:12:19,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 09:12:19,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929995564] [2021-11-07 09:12:19,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:12:19,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 09:12:19,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:12:19,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 09:12:19,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-07 09:12:19,783 INFO L87 Difference]: Start difference. First operand 1091 states and 1218 transitions. Second operand has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 09:12:21,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:23,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:26,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15