./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 08:44:39,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:44:39,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:44:39,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:44:39,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:44:39,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:44:39,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:44:39,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:44:39,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:44:39,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:44:39,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:44:39,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:44:39,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:44:39,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:44:39,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:44:39,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:44:39,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:44:39,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:44:39,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:44:39,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:44:39,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:44:39,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:44:39,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:44:39,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:44:39,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:44:39,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:44:39,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:44:39,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:44:39,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:44:39,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:44:39,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:44:39,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:44:39,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:44:39,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:44:39,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:44:39,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:44:39,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:44:39,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:44:39,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:44:39,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:44:39,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:44:39,880 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 08:44:39,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:44:39,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:44:39,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:44:39,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:44:39,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:44:39,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:44:39,901 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:44:39,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:44:39,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:44:39,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:44:39,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:44:39,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:44:39,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:44:39,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:44:39,902 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:44:39,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:44:39,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:44:39,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:44:39,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:44:39,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:44:39,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:44:39,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:44:39,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:44:39,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:44:39,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:44:39,904 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:44:39,905 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:44:39,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:44:39,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:44:39,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 [2021-11-07 08:44:40,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:44:40,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:44:40,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:44:40,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:44:40,179 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:44:40,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2021-11-07 08:44:40,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16dad61c1/ab8c773b293e43afa29c7104f479b73e/FLAGb4c5c6de2 [2021-11-07 08:44:40,914 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:44:40,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2021-11-07 08:44:40,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16dad61c1/ab8c773b293e43afa29c7104f479b73e/FLAGb4c5c6de2 [2021-11-07 08:44:41,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16dad61c1/ab8c773b293e43afa29c7104f479b73e [2021-11-07 08:44:41,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:44:41,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:44:41,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:44:41,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:44:41,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:44:41,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:44:41" (1/1) ... [2021-11-07 08:44:41,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3233362a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:41, skipping insertion in model container [2021-11-07 08:44:41,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:44:41" (1/1) ... [2021-11-07 08:44:41,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:44:41,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:44:41,416 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_append_with_lookup_harness.i[4505,4518] [2021-11-07 08:44:41,424 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_append_with_lookup_harness.i[4565,4578] [2021-11-07 08:44:41,451 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:44:41,457 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 08:44:42,434 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:42,435 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:42,436 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:42,436 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:42,437 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:42,447 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:42,448 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:42,450 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:42,450 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:42,699 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 08:44:42,700 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 08:44:42,701 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 08:44:42,702 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 08:44:42,703 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 08:44:42,704 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 08:44:42,704 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 08:44:42,705 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 08:44:42,705 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 08:44:42,705 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 08:44:42,794 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 08:44:42,814 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:42,814 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:42,965 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:42,966 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:43,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:44:43,113 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:44:43,137 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_append_with_lookup_harness.i[4505,4518] [2021-11-07 08:44:43,138 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_append_with_lookup_harness.i[4565,4578] [2021-11-07 08:44:43,141 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:44:43,142 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 08:44:43,185 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:43,185 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:43,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:43,188 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:43,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:43,203 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:43,204 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:43,205 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:43,206 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:43,239 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 08:44:43,240 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 08:44:43,240 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 08:44:43,241 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 08:44:43,242 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 08:44:43,242 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 08:44:43,242 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 08:44:43,245 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 08:44:43,246 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 08:44:43,250 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 08:44:43,274 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 08:44:43,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:43,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:43,369 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:43,375 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:43,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:44:43,644 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:44:43,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:43 WrapperNode [2021-11-07 08:44:43,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:44:43,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:44:43,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:44:43,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:44:43,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:43" (1/1) ... [2021-11-07 08:44:43,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:43" (1/1) ... [2021-11-07 08:44:43,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:44:43,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:44:43,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:44:43,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:44:43,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:43" (1/1) ... [2021-11-07 08:44:43,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:43" (1/1) ... [2021-11-07 08:44:43,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:43" (1/1) ... [2021-11-07 08:44:43,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:43" (1/1) ... [2021-11-07 08:44:43,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:43" (1/1) ... [2021-11-07 08:44:43,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:43" (1/1) ... [2021-11-07 08:44:44,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:43" (1/1) ... [2021-11-07 08:44:44,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:44:44,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:44:44,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:44:44,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:44:44,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:43" (1/1) ... [2021-11-07 08:44:44,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:44:44,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 08:44:44,077 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 08:44:44,111 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 08:44:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:44:44,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:44:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:44:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:44:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:44:44,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:44:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-07 08:44:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:44:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:44:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:44:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:44:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:44:53,053 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:44:53,054 INFO L299 CfgBuilder]: Removed 121 assume(true) statements. [2021-11-07 08:44:53,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:44:53 BoogieIcfgContainer [2021-11-07 08:44:53,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:44:53,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:44:53,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:44:53,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:44:53,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:44:41" (1/3) ... [2021-11-07 08:44:53,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18380540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:44:53, skipping insertion in model container [2021-11-07 08:44:53,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:43" (2/3) ... [2021-11-07 08:44:53,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18380540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:44:53, skipping insertion in model container [2021-11-07 08:44:53,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:44:53" (3/3) ... [2021-11-07 08:44:53,065 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_with_lookup_harness.i [2021-11-07 08:44:53,070 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:44:53,070 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-11-07 08:44:53,112 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:44:53,117 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 08:44:53,118 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-11-07 08:44:53,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 252 states, 236 states have (on average 1.4703389830508475) internal successors, (347), 251 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:53,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 08:44:53,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:44:53,146 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] [2021-11-07 08:44:53,147 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:44:53,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:53,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1615139171, now seen corresponding path program 1 times [2021-11-07 08:44:53,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:44:53,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30066712] [2021-11-07 08:44:53,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:53,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:44:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:53,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:44:53,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:44:53,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30066712] [2021-11-07 08:44:53,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30066712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:53,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:53,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:44:53,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609458118] [2021-11-07 08:44:53,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:44:53,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:44:53,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:44:53,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:44:53,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:44:53,922 INFO L87 Difference]: Start difference. First operand has 252 states, 236 states have (on average 1.4703389830508475) internal successors, (347), 251 states have internal predecessors, (347), 0 states have call successors, (0), 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 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:53,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:53,978 INFO L93 Difference]: Finished difference Result 500 states and 689 transitions. [2021-11-07 08:44:53,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:44:53,982 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 08:44:53,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:53,996 INFO L225 Difference]: With dead ends: 500 [2021-11-07 08:44:53,996 INFO L226 Difference]: Without dead ends: 247 [2021-11-07 08:44:54,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.05ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:44:54,009 INFO L933 BasicCegarLoop]: 320 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, 320 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.14ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 08:44:54,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 5.14ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 08:44:54,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-07 08:44:54,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2021-11-07 08:44:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 232 states have (on average 1.3577586206896552) internal successors, (315), 246 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:54,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 315 transitions. [2021-11-07 08:44:54,078 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 315 transitions. Word has length 47 [2021-11-07 08:44:54,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:54,079 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 315 transitions. [2021-11-07 08:44:54,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:54,081 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 315 transitions. [2021-11-07 08:44:54,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 08:44:54,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:44:54,084 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] [2021-11-07 08:44:54,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:44:54,090 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:44:54,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:54,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1441117657, now seen corresponding path program 1 times [2021-11-07 08:44:54,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:44:54,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322140358] [2021-11-07 08:44:54,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:54,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:44:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:54,501 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 08:44:54,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:44:54,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322140358] [2021-11-07 08:44:54,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322140358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:54,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:54,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:44:54,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16260797] [2021-11-07 08:44:54,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:44:54,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:44:54,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:44:54,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:44:54,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:44:54,504 INFO L87 Difference]: Start difference. First operand 247 states and 315 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:54,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:54,724 INFO L93 Difference]: Finished difference Result 468 states and 596 transitions. [2021-11-07 08:44:54,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:44:54,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 08:44:54,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:54,726 INFO L225 Difference]: With dead ends: 468 [2021-11-07 08:44:54,726 INFO L226 Difference]: Without dead ends: 247 [2021-11-07 08:44:54,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.17ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:44:54,728 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 389 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.68ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 193.40ms IncrementalHoareTripleChecker+Time [2021-11-07 08:44:54,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 496 Invalid, 41 Unknown, 0 Unchecked, 5.68ms Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 193.40ms Time] [2021-11-07 08:44:54,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-07 08:44:54,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2021-11-07 08:44:54,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 232 states have (on average 1.3448275862068966) internal successors, (312), 246 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:54,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 312 transitions. [2021-11-07 08:44:54,741 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 312 transitions. Word has length 47 [2021-11-07 08:44:54,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:54,741 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 312 transitions. [2021-11-07 08:44:54,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 312 transitions. [2021-11-07 08:44:54,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 08:44:54,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:44:54,746 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] [2021-11-07 08:44:54,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:44:54,747 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:44:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:54,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1376891287, now seen corresponding path program 1 times [2021-11-07 08:44:54,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:44:54,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098266367] [2021-11-07 08:44:54,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:54,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:44:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:55,100 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 08:44:55,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:44:55,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098266367] [2021-11-07 08:44:55,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098266367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:55,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:55,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:44:55,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676345845] [2021-11-07 08:44:55,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:44:55,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:44:55,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:44:55,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:44:55,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:44:55,102 INFO L87 Difference]: Start difference. First operand 247 states and 312 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:55,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:55,599 INFO L93 Difference]: Finished difference Result 519 states and 662 transitions. [2021-11-07 08:44:55,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:44:55,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 08:44:55,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:55,601 INFO L225 Difference]: With dead ends: 519 [2021-11-07 08:44:55,601 INFO L226 Difference]: Without dead ends: 297 [2021-11-07 08:44:55,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:44:55,603 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 109 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 391.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.64ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 446.04ms IncrementalHoareTripleChecker+Time [2021-11-07 08:44:55,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 875 Invalid, 101 Unknown, 0 Unchecked, 4.64ms Time], IncrementalHoareTripleChecker [17 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 446.04ms Time] [2021-11-07 08:44:55,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-07 08:44:55,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 257. [2021-11-07 08:44:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 242 states have (on average 1.3305785123966942) internal successors, (322), 256 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:55,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 322 transitions. [2021-11-07 08:44:55,625 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 322 transitions. Word has length 59 [2021-11-07 08:44:55,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:55,625 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 322 transitions. [2021-11-07 08:44:55,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:55,626 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 322 transitions. [2021-11-07 08:44:55,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 08:44:55,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:44:55,631 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] [2021-11-07 08:44:55,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:44:55,631 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:44:55,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:55,633 INFO L85 PathProgramCache]: Analyzing trace with hash -868688167, now seen corresponding path program 1 times [2021-11-07 08:44:55,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:44:55,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763490153] [2021-11-07 08:44:55,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:55,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:44:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:56,181 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 08:44:56,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:44:56,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763490153] [2021-11-07 08:44:56,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763490153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:56,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:56,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:44:56,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112237726] [2021-11-07 08:44:56,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:44:56,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:44:56,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:44:56,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:44:56,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:44:56,183 INFO L87 Difference]: Start difference. First operand 257 states and 322 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:56,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:56,573 INFO L93 Difference]: Finished difference Result 383 states and 471 transitions. [2021-11-07 08:44:56,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:44:56,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 08:44:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:56,575 INFO L225 Difference]: With dead ends: 383 [2021-11-07 08:44:56,576 INFO L226 Difference]: Without dead ends: 257 [2021-11-07 08:44:56,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 308.69ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:44:56,577 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 1203 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 190.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.56ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 207.17ms IncrementalHoareTripleChecker+Time [2021-11-07 08:44:56,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1203 Valid, 548 Invalid, 56 Unknown, 0 Unchecked, 4.56ms Time], IncrementalHoareTripleChecker [12 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 207.17ms Time] [2021-11-07 08:44:56,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-07 08:44:56,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2021-11-07 08:44:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 242 states have (on average 1.322314049586777) internal successors, (320), 256 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 320 transitions. [2021-11-07 08:44:56,586 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 320 transitions. Word has length 59 [2021-11-07 08:44:56,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:56,587 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 320 transitions. [2021-11-07 08:44:56,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:56,587 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 320 transitions. [2021-11-07 08:44:56,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 08:44:56,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:44:56,589 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] [2021-11-07 08:44:56,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:44:56,590 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:44:56,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:56,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1883881006, now seen corresponding path program 1 times [2021-11-07 08:44:56,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:44:56,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698185356] [2021-11-07 08:44:56,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:56,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:44:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:56,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:44:56,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:44:56,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698185356] [2021-11-07 08:44:56,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698185356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:56,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:56,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:44:56,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593889587] [2021-11-07 08:44:56,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:44:56,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:44:56,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:44:56,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:44:56,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:44:56,934 INFO L87 Difference]: Start difference. First operand 257 states and 320 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:57,087 INFO L93 Difference]: Finished difference Result 463 states and 576 transitions. [2021-11-07 08:44:57,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:44:57,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 08:44:57,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:57,089 INFO L225 Difference]: With dead ends: 463 [2021-11-07 08:44:57,089 INFO L226 Difference]: Without dead ends: 257 [2021-11-07 08:44:57,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.34ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:44:57,091 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 322 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 126.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138.93ms IncrementalHoareTripleChecker+Time [2021-11-07 08:44:57,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 522 Invalid, 37 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 138.93ms Time] [2021-11-07 08:44:57,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-07 08:44:57,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2021-11-07 08:44:57,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 242 states have (on average 1.3140495867768596) internal successors, (318), 256 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:57,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 318 transitions. [2021-11-07 08:44:57,099 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 318 transitions. Word has length 65 [2021-11-07 08:44:57,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:57,101 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 318 transitions. [2021-11-07 08:44:57,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:57,101 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 318 transitions. [2021-11-07 08:44:57,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 08:44:57,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:44:57,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:44:57,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:44:57,105 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:44:57,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:57,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1435554775, now seen corresponding path program 1 times [2021-11-07 08:44:57,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:44:57,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845702940] [2021-11-07 08:44:57,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:57,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:44:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:57,583 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 08:44:57,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:44:57,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845702940] [2021-11-07 08:44:57,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845702940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:57,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:57,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:44:57,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537527941] [2021-11-07 08:44:57,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:44:57,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:44:57,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:44:57,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:44:57,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:44:57,585 INFO L87 Difference]: Start difference. First operand 257 states and 318 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:57,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:57,965 INFO L93 Difference]: Finished difference Result 431 states and 530 transitions. [2021-11-07 08:44:57,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:44:57,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 08:44:57,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:57,968 INFO L225 Difference]: With dead ends: 431 [2021-11-07 08:44:57,968 INFO L226 Difference]: Without dead ends: 257 [2021-11-07 08:44:57,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 321.21ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:44:57,969 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 1076 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 176.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.94ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 192.83ms IncrementalHoareTripleChecker+Time [2021-11-07 08:44:57,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 638 Invalid, 56 Unknown, 0 Unchecked, 3.94ms Time], IncrementalHoareTripleChecker [13 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 192.83ms Time] [2021-11-07 08:44:57,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-07 08:44:57,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2021-11-07 08:44:57,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 242 states have (on average 1.3016528925619835) internal successors, (315), 256 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:57,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 315 transitions. [2021-11-07 08:44:57,977 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 315 transitions. Word has length 67 [2021-11-07 08:44:57,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:57,978 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 315 transitions. [2021-11-07 08:44:57,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:57,978 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 315 transitions. [2021-11-07 08:44:57,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 08:44:57,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:44:57,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:44:57,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:44:57,980 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:44:57,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:57,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1050165348, now seen corresponding path program 1 times [2021-11-07 08:44:57,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:44:57,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633586953] [2021-11-07 08:44:57,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:57,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:44:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:58,759 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 08:44:58,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:44:58,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633586953] [2021-11-07 08:44:58,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633586953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:58,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:58,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:44:58,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852966033] [2021-11-07 08:44:58,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:44:58,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:44:58,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:44:58,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:44:58,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:44:58,761 INFO L87 Difference]: Start difference. First operand 257 states and 315 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:59,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:59,510 INFO L93 Difference]: Finished difference Result 431 states and 516 transitions. [2021-11-07 08:44:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:44:59,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 08:44:59,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:59,513 INFO L225 Difference]: With dead ends: 431 [2021-11-07 08:44:59,513 INFO L226 Difference]: Without dead ends: 425 [2021-11-07 08:44:59,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 217.76ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:44:59,514 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 314 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 576.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.07ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 628.13ms IncrementalHoareTripleChecker+Time [2021-11-07 08:44:59,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 1275 Invalid, 181 Unknown, 0 Unchecked, 6.07ms Time], IncrementalHoareTripleChecker [26 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 628.13ms Time] [2021-11-07 08:44:59,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-11-07 08:44:59,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 269. [2021-11-07 08:44:59,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 254 states have (on average 1.2874015748031495) internal successors, (327), 268 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:59,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 327 transitions. [2021-11-07 08:44:59,529 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 327 transitions. Word has length 69 [2021-11-07 08:44:59,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:59,529 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 327 transitions. [2021-11-07 08:44:59,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:59,530 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 327 transitions. [2021-11-07 08:44:59,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 08:44:59,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:44:59,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:44:59,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:44:59,531 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:44:59,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:59,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1899719168, now seen corresponding path program 1 times [2021-11-07 08:44:59,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:44:59,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104266263] [2021-11-07 08:44:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:59,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:44:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:59,858 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 08:44:59,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:44:59,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104266263] [2021-11-07 08:44:59,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104266263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:59,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:59,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:44:59,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058188334] [2021-11-07 08:44:59,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:44:59,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:44:59,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:44:59,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:44:59,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:44:59,861 INFO L87 Difference]: Start difference. First operand 269 states and 327 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:00,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:45:00,006 INFO L93 Difference]: Finished difference Result 484 states and 577 transitions. [2021-11-07 08:45:00,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:45:00,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 08:45:00,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:45:00,011 INFO L225 Difference]: With dead ends: 484 [2021-11-07 08:45:00,012 INFO L226 Difference]: Without dead ends: 398 [2021-11-07 08:45:00,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 146.88ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:45:00,014 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 275 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.60ms IncrementalHoareTripleChecker+Time [2021-11-07 08:45:00,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 1389 Invalid, 16 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 61.60ms Time] [2021-11-07 08:45:00,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-07 08:45:00,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 272. [2021-11-07 08:45:00,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 257 states have (on average 1.284046692607004) internal successors, (330), 271 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:00,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 330 transitions. [2021-11-07 08:45:00,024 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 330 transitions. Word has length 70 [2021-11-07 08:45:00,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:45:00,027 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 330 transitions. [2021-11-07 08:45:00,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:00,027 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 330 transitions. [2021-11-07 08:45:00,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 08:45:00,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:45:00,033 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] [2021-11-07 08:45:00,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 08:45:00,034 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:45:00,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:45:00,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1656689084, now seen corresponding path program 1 times [2021-11-07 08:45:00,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:45:00,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474977683] [2021-11-07 08:45:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:45:00,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:45:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:45:15,825 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 08:45:15,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:45:15,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474977683] [2021-11-07 08:45:15,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474977683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:45:15,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:45:15,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 08:45:15,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066528075] [2021-11-07 08:45:15,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:45:15,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:45:15,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:45:15,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:45:15,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:45:15,827 INFO L87 Difference]: Start difference. First operand 272 states and 330 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:17,899 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 08:45:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:45:19,453 INFO L93 Difference]: Finished difference Result 549 states and 670 transitions. [2021-11-07 08:45:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 08:45:19,453 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 08:45:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:45:19,455 INFO L225 Difference]: With dead ends: 549 [2021-11-07 08:45:19,455 INFO L226 Difference]: Without dead ends: 304 [2021-11-07 08:45:19,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 804.06ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-11-07 08:45:19,456 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 748 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2878.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.08ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3037.97ms IncrementalHoareTripleChecker+Time [2021-11-07 08:45:19,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 1329 Invalid, 263 Unknown, 0 Unchecked, 9.08ms Time], IncrementalHoareTripleChecker [16 Valid, 246 Invalid, 1 Unknown, 0 Unchecked, 3037.97ms Time] [2021-11-07 08:45:19,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-07 08:45:19,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 270. [2021-11-07 08:45:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 255 states have (on average 1.2823529411764707) internal successors, (327), 269 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:19,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 327 transitions. [2021-11-07 08:45:19,465 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 327 transitions. Word has length 72 [2021-11-07 08:45:19,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:45:19,465 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 327 transitions. [2021-11-07 08:45:19,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:19,466 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 327 transitions. [2021-11-07 08:45:19,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 08:45:19,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:45:19,467 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 08:45:19,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 08:45:19,467 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:45:19,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:45:19,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1518272178, now seen corresponding path program 1 times [2021-11-07 08:45:19,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:45:19,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466009791] [2021-11-07 08:45:19,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:45:19,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:45:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:45:20,757 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 08:45:20,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:45:20,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466009791] [2021-11-07 08:45:20,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466009791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:45:20,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:45:20,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 08:45:20,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874633340] [2021-11-07 08:45:20,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:45:20,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:45:20,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:45:20,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:45:20,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:45:20,759 INFO L87 Difference]: Start difference. First operand 270 states and 327 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 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 08:45:22,848 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 08:45:24,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:45:27,035 WARN L515 Checker$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 08:45:29,103 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 08:45:30,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:45:30,742 INFO L93 Difference]: Finished difference Result 429 states and 514 transitions. [2021-11-07 08:45:30,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 08:45:30,743 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 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 08:45:30,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:45:30,745 INFO L225 Difference]: With dead ends: 429 [2021-11-07 08:45:30,745 INFO L226 Difference]: Without dead ends: 427 [2021-11-07 08:45:30,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 980.61ms TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-11-07 08:45:30,746 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 1335 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 40 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8959.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.52ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9412.94ms IncrementalHoareTripleChecker+Time [2021-11-07 08:45:30,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 833 Invalid, 260 Unknown, 0 Unchecked, 6.52ms Time], IncrementalHoareTripleChecker [40 Valid, 216 Invalid, 4 Unknown, 0 Unchecked, 9412.94ms Time] [2021-11-07 08:45:30,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-11-07 08:45:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 319. [2021-11-07 08:45:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 304 states have (on average 1.2894736842105263) internal successors, (392), 318 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:30,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 392 transitions. [2021-11-07 08:45:30,759 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 392 transitions. Word has length 76 [2021-11-07 08:45:30,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:45:30,759 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 392 transitions. [2021-11-07 08:45:30,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 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 08:45:30,760 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 392 transitions. [2021-11-07 08:45:30,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 08:45:30,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:45:30,761 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 08:45:30,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 08:45:30,761 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:45:30,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:45:30,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1518283101, now seen corresponding path program 1 times [2021-11-07 08:45:30,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:45:30,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024328161] [2021-11-07 08:45:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:45:30,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:45:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:45:31,004 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 08:45:31,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:45:31,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024328161] [2021-11-07 08:45:31,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024328161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:45:31,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:45:31,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:45:31,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785530136] [2021-11-07 08:45:31,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:45:31,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:45:31,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:45:31,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:45:31,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:45:31,006 INFO L87 Difference]: Start difference. First operand 319 states and 392 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 08:45:31,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:45:31,096 INFO L93 Difference]: Finished difference Result 472 states and 568 transitions. [2021-11-07 08:45:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:45:31,097 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 08:45:31,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:45:31,099 INFO L225 Difference]: With dead ends: 472 [2021-11-07 08:45:31,099 INFO L226 Difference]: Without dead ends: 404 [2021-11-07 08:45:31,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.00ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:45:31,101 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 86 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.76ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.73ms IncrementalHoareTripleChecker+Time [2021-11-07 08:45:31,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 901 Invalid, 11 Unknown, 0 Unchecked, 0.76ms Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 44.73ms Time] [2021-11-07 08:45:31,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-11-07 08:45:31,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 323. [2021-11-07 08:45:31,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 308 states have (on average 1.2857142857142858) internal successors, (396), 322 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 08:45:31,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 396 transitions. [2021-11-07 08:45:31,117 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 396 transitions. Word has length 76 [2021-11-07 08:45:31,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:45:31,117 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 396 transitions. [2021-11-07 08:45:31,118 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 08:45:31,118 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 396 transitions. [2021-11-07 08:45:31,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 08:45:31,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:45:31,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:45:31,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 08:45:31,119 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:45:31,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:45:31,120 INFO L85 PathProgramCache]: Analyzing trace with hash -811165614, now seen corresponding path program 1 times [2021-11-07 08:45:31,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:45:31,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841041368] [2021-11-07 08:45:31,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:45:31,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:45:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:45:31,840 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 08:45:31,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:45:31,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841041368] [2021-11-07 08:45:31,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841041368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:45:31,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:45:31,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:45:31,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563112176] [2021-11-07 08:45:31,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:45:31,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:45:31,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:45:31,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:45:31,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:45:31,843 INFO L87 Difference]: Start difference. First operand 323 states and 396 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:33,915 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 08:45:36,071 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:45:38,177 WARN L515 Checker$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 08:45:39,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:45:39,933 INFO L93 Difference]: Finished difference Result 655 states and 786 transitions. [2021-11-07 08:45:39,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:45:39,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-07 08:45:39,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:45:39,936 INFO L225 Difference]: With dead ends: 655 [2021-11-07 08:45:39,936 INFO L226 Difference]: Without dead ends: 529 [2021-11-07 08:45:39,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 379.98ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-07 08:45:39,937 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 612 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7454.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.97ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7816.87ms IncrementalHoareTripleChecker+Time [2021-11-07 08:45:39,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 1482 Invalid, 374 Unknown, 0 Unchecked, 5.97ms Time], IncrementalHoareTripleChecker [10 Valid, 361 Invalid, 3 Unknown, 0 Unchecked, 7816.87ms Time] [2021-11-07 08:45:39,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-11-07 08:45:39,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 363. [2021-11-07 08:45:39,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 348 states have (on average 1.2816091954022988) internal successors, (446), 362 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:39,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 446 transitions. [2021-11-07 08:45:39,955 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 446 transitions. Word has length 77 [2021-11-07 08:45:39,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:45:39,956 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 446 transitions. [2021-11-07 08:45:39,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:39,956 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 446 transitions. [2021-11-07 08:45:39,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 08:45:39,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:45:39,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:45:39,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 08:45:39,958 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:45:39,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:45:39,958 INFO L85 PathProgramCache]: Analyzing trace with hash -540788130, now seen corresponding path program 1 times [2021-11-07 08:45:39,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:45:39,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005689558] [2021-11-07 08:45:39,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:45:39,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:45:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:45:40,750 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 08:45:40,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:45:40,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005689558] [2021-11-07 08:45:40,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005689558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:45:40,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:45:40,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:45:40,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336074885] [2021-11-07 08:45:40,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:45:40,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:45:40,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:45:40,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:45:40,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:45:40,752 INFO L87 Difference]: Start difference. First operand 363 states and 446 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:41,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:45:41,648 INFO L93 Difference]: Finished difference Result 851 states and 1032 transitions. [2021-11-07 08:45:41,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:45:41,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 08:45:41,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:45:41,652 INFO L225 Difference]: With dead ends: 851 [2021-11-07 08:45:41,652 INFO L226 Difference]: Without dead ends: 502 [2021-11-07 08:45:41,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 260.71ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:45:41,653 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 173 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 677.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.07ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 729.60ms IncrementalHoareTripleChecker+Time [2021-11-07 08:45:41,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 2187 Invalid, 232 Unknown, 0 Unchecked, 4.07ms Time], IncrementalHoareTripleChecker [28 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 729.60ms Time] [2021-11-07 08:45:41,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-11-07 08:45:41,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 363. [2021-11-07 08:45:41,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 348 states have (on average 1.2729885057471264) internal successors, (443), 362 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:41,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 443 transitions. [2021-11-07 08:45:41,675 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 443 transitions. Word has length 79 [2021-11-07 08:45:41,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:45:41,675 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 443 transitions. [2021-11-07 08:45:41,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:41,675 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 443 transitions. [2021-11-07 08:45:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 08:45:41,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:45:41,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:45:41,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 08:45:41,677 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:45:41,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:45:41,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1102134247, now seen corresponding path program 1 times [2021-11-07 08:45:41,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:45:41,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703750782] [2021-11-07 08:45:41,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:45:41,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:45:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:45:42,402 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 08:45:42,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:45:42,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703750782] [2021-11-07 08:45:42,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703750782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:45:42,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:45:42,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:45:42,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22689125] [2021-11-07 08:45:42,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:45:42,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:45:42,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:45:42,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:45:42,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:45:42,404 INFO L87 Difference]: Start difference. First operand 363 states and 443 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:44,477 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 08:45:45,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:45:45,761 INFO L93 Difference]: Finished difference Result 1060 states and 1292 transitions. [2021-11-07 08:45:45,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:45:45,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-07 08:45:45,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:45:45,764 INFO L225 Difference]: With dead ends: 1060 [2021-11-07 08:45:45,764 INFO L226 Difference]: Without dead ends: 717 [2021-11-07 08:45:45,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 141.56ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:45:45,765 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 645 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3048.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.67ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3231.60ms IncrementalHoareTripleChecker+Time [2021-11-07 08:45:45,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 700 Invalid, 289 Unknown, 0 Unchecked, 4.67ms Time], IncrementalHoareTripleChecker [27 Valid, 261 Invalid, 1 Unknown, 0 Unchecked, 3231.60ms Time] [2021-11-07 08:45:45,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-11-07 08:45:45,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 410. [2021-11-07 08:45:45,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 395 states have (on average 1.2734177215189872) internal successors, (503), 409 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:45,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 503 transitions. [2021-11-07 08:45:45,782 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 503 transitions. Word has length 81 [2021-11-07 08:45:45,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:45:45,782 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 503 transitions. [2021-11-07 08:45:45,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:45,782 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 503 transitions. [2021-11-07 08:45:45,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 08:45:45,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:45:45,784 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] [2021-11-07 08:45:45,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 08:45:45,784 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:45:45,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:45:45,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1519530853, now seen corresponding path program 1 times [2021-11-07 08:45:45,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:45:45,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373116017] [2021-11-07 08:45:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:45:45,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:45:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:45:45,970 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 08:45:45,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:45:45,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373116017] [2021-11-07 08:45:45,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373116017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:45:45,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:45:45,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:45:45,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870562898] [2021-11-07 08:45:45,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:45:45,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:45:45,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:45:45,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:45:45,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:45:45,972 INFO L87 Difference]: Start difference. First operand 410 states and 503 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:46,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:45:46,282 INFO L93 Difference]: Finished difference Result 831 states and 1016 transitions. [2021-11-07 08:45:46,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:45:46,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-07 08:45:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:45:46,284 INFO L225 Difference]: With dead ends: 831 [2021-11-07 08:45:46,284 INFO L226 Difference]: Without dead ends: 431 [2021-11-07 08:45:46,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.05ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:45:46,285 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 29 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 242.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.30ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 261.45ms IncrementalHoareTripleChecker+Time [2021-11-07 08:45:46,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 838 Invalid, 90 Unknown, 0 Unchecked, 1.30ms Time], IncrementalHoareTripleChecker [15 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 261.45ms Time] [2021-11-07 08:45:46,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-07 08:45:46,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 407. [2021-11-07 08:45:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 392 states have (on average 1.2525510204081634) internal successors, (491), 406 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:46,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 491 transitions. [2021-11-07 08:45:46,299 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 491 transitions. Word has length 81 [2021-11-07 08:45:46,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:45:46,299 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 491 transitions. [2021-11-07 08:45:46,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:46,300 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 491 transitions. [2021-11-07 08:45:46,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 08:45:46,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:45:46,300 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] [2021-11-07 08:45:46,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 08:45:46,301 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:45:46,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:45:46,301 INFO L85 PathProgramCache]: Analyzing trace with hash -148194089, now seen corresponding path program 1 times [2021-11-07 08:45:46,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:45:46,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655225163] [2021-11-07 08:45:46,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:45:46,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:45:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:45:49,914 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 08:45:49,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:45:49,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655225163] [2021-11-07 08:45:49,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655225163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:45:49,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:45:49,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 08:45:49,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025046517] [2021-11-07 08:45:49,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:45:49,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 08:45:49,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:45:49,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 08:45:49,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-07 08:45:49,916 INFO L87 Difference]: Start difference. First operand 407 states and 491 transitions. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:45:51,992 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 08:45:54,136 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:45:56,214 WARN L515 Checker$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 08:45:58,305 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 08:46:01,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:46:01,297 INFO L93 Difference]: Finished difference Result 576 states and 684 transitions. [2021-11-07 08:46:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 08:46:01,298 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-07 08:46:01,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:46:01,300 INFO L225 Difference]: With dead ends: 576 [2021-11-07 08:46:01,300 INFO L226 Difference]: Without dead ends: 574 [2021-11-07 08:46:01,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1761.89ms TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-11-07 08:46:01,301 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 1983 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 72 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9676.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.60ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10128.95ms IncrementalHoareTripleChecker+Time [2021-11-07 08:46:01,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 1211 Invalid, 544 Unknown, 0 Unchecked, 9.60ms Time], IncrementalHoareTripleChecker [72 Valid, 468 Invalid, 4 Unknown, 0 Unchecked, 10128.95ms Time] [2021-11-07 08:46:01,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-11-07 08:46:01,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 415. [2021-11-07 08:46:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 400 states have (on average 1.2525) internal successors, (501), 414 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 501 transitions. [2021-11-07 08:46:01,318 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 501 transitions. Word has length 81 [2021-11-07 08:46:01,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:46:01,319 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 501 transitions. [2021-11-07 08:46:01,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 501 transitions. [2021-11-07 08:46:01,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 08:46:01,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:46:01,320 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:46:01,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 08:46:01,320 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:46:01,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:46:01,321 INFO L85 PathProgramCache]: Analyzing trace with hash -418304145, now seen corresponding path program 1 times [2021-11-07 08:46:01,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:46:01,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115431796] [2021-11-07 08:46:01,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:46:01,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:46:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:46:02,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:46:02,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:46:02,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115431796] [2021-11-07 08:46:02,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115431796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:46:02,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:46:02,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 08:46:02,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897363638] [2021-11-07 08:46:02,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:46:02,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:46:02,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:46:02,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:46:02,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:46:02,811 INFO L87 Difference]: Start difference. First operand 415 states and 501 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:04,866 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 08:46:06,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:46:09,065 WARN L515 Checker$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 08:46:11,181 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 08:46:13,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:46:13,523 INFO L93 Difference]: Finished difference Result 757 states and 901 transitions. [2021-11-07 08:46:13,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 08:46:13,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-07 08:46:13,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:46:13,526 INFO L225 Difference]: With dead ends: 757 [2021-11-07 08:46:13,526 INFO L226 Difference]: Without dead ends: 597 [2021-11-07 08:46:13,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 690.47ms TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-11-07 08:46:13,528 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 598 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 12 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9736.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.69ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10250.55ms IncrementalHoareTripleChecker+Time [2021-11-07 08:46:13,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [598 Valid, 1952 Invalid, 527 Unknown, 0 Unchecked, 7.69ms Time], IncrementalHoareTripleChecker [12 Valid, 511 Invalid, 4 Unknown, 0 Unchecked, 10250.55ms Time] [2021-11-07 08:46:13,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-07 08:46:13,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 417. [2021-11-07 08:46:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 402 states have (on average 1.2512437810945274) internal successors, (503), 416 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:13,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 503 transitions. [2021-11-07 08:46:13,546 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 503 transitions. Word has length 81 [2021-11-07 08:46:13,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:46:13,546 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 503 transitions. [2021-11-07 08:46:13,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:13,547 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 503 transitions. [2021-11-07 08:46:13,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 08:46:13,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:46:13,548 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] [2021-11-07 08:46:13,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 08:46:13,548 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:46:13,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:46:13,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1797412037, now seen corresponding path program 1 times [2021-11-07 08:46:13,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:46:13,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939712038] [2021-11-07 08:46:13,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:46:13,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:46:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:46:14,150 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 08:46:14,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:46:14,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939712038] [2021-11-07 08:46:14,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939712038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:46:14,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:46:14,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:46:14,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871537551] [2021-11-07 08:46:14,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:46:14,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:46:14,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:46:14,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:46:14,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:46:14,152 INFO L87 Difference]: Start difference. First operand 417 states and 503 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:14,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:46:14,957 INFO L93 Difference]: Finished difference Result 880 states and 1050 transitions. [2021-11-07 08:46:14,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:46:14,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-07 08:46:14,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:46:14,960 INFO L225 Difference]: With dead ends: 880 [2021-11-07 08:46:14,960 INFO L226 Difference]: Without dead ends: 540 [2021-11-07 08:46:14,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 249.27ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:46:14,961 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 141 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 622.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.27ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 660.58ms IncrementalHoareTripleChecker+Time [2021-11-07 08:46:14,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 2035 Invalid, 236 Unknown, 0 Unchecked, 3.27ms Time], IncrementalHoareTripleChecker [28 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 660.58ms Time] [2021-11-07 08:46:14,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-07 08:46:14,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 417. [2021-11-07 08:46:14,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 402 states have (on average 1.243781094527363) internal successors, (500), 416 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:14,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 500 transitions. [2021-11-07 08:46:14,979 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 500 transitions. Word has length 83 [2021-11-07 08:46:14,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:46:14,980 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 500 transitions. [2021-11-07 08:46:14,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:14,980 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 500 transitions. [2021-11-07 08:46:14,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 08:46:14,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:46:14,981 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] [2021-11-07 08:46:14,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 08:46:14,982 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:46:14,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:46:14,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1272186599, now seen corresponding path program 1 times [2021-11-07 08:46:14,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:46:14,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830744323] [2021-11-07 08:46:14,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:46:14,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:46:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:46:16,311 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 08:46:16,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:46:16,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830744323] [2021-11-07 08:46:16,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830744323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:46:16,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:46:16,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 08:46:16,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906291475] [2021-11-07 08:46:16,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:46:16,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:46:16,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:46:16,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:46:16,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:46:16,314 INFO L87 Difference]: Start difference. First operand 417 states and 500 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:18,369 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 08:46:20,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:46:22,565 WARN L515 Checker$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 08:46:24,694 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 08:46:27,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:46:27,316 INFO L93 Difference]: Finished difference Result 832 states and 995 transitions. [2021-11-07 08:46:27,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:46:27,317 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-07 08:46:27,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:46:27,319 INFO L225 Difference]: With dead ends: 832 [2021-11-07 08:46:27,319 INFO L226 Difference]: Without dead ends: 740 [2021-11-07 08:46:27,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1079.20ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:46:27,320 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 1420 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 54 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9760.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.44ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10306.37ms IncrementalHoareTripleChecker+Time [2021-11-07 08:46:27,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1420 Valid, 1671 Invalid, 636 Unknown, 0 Unchecked, 8.44ms Time], IncrementalHoareTripleChecker [54 Valid, 578 Invalid, 4 Unknown, 0 Unchecked, 10306.37ms Time] [2021-11-07 08:46:27,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-11-07 08:46:27,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 596. [2021-11-07 08:46:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 581 states have (on average 1.2512908777969018) internal successors, (727), 595 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 727 transitions. [2021-11-07 08:46:27,346 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 727 transitions. Word has length 83 [2021-11-07 08:46:27,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:46:27,346 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 727 transitions. [2021-11-07 08:46:27,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:27,346 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 727 transitions. [2021-11-07 08:46:27,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 08:46:27,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:46:27,348 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] [2021-11-07 08:46:27,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 08:46:27,348 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:46:27,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:46:27,348 INFO L85 PathProgramCache]: Analyzing trace with hash -80015264, now seen corresponding path program 1 times [2021-11-07 08:46:27,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:46:27,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678738686] [2021-11-07 08:46:27,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:46:27,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:46:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:46:27,757 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 08:46:27,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:46:27,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678738686] [2021-11-07 08:46:27,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678738686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:46:27,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:46:27,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:46:27,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806574219] [2021-11-07 08:46:27,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:46:27,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:46:27,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:46:27,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:46:27,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:46:27,759 INFO L87 Difference]: Start difference. First operand 596 states and 727 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:29,814 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 08:46:31,922 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 08:46:33,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:46:33,021 INFO L93 Difference]: Finished difference Result 1415 states and 1717 transitions. [2021-11-07 08:46:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:46:33,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-07 08:46:33,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:46:33,027 INFO L225 Difference]: With dead ends: 1415 [2021-11-07 08:46:33,027 INFO L226 Difference]: Without dead ends: 916 [2021-11-07 08:46:33,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 77.65ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:46:33,029 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 232 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 21 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4902.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.01ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5176.12ms IncrementalHoareTripleChecker+Time [2021-11-07 08:46:33,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 1183 Invalid, 300 Unknown, 0 Unchecked, 4.01ms Time], IncrementalHoareTripleChecker [21 Valid, 277 Invalid, 2 Unknown, 0 Unchecked, 5176.12ms Time] [2021-11-07 08:46:33,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-11-07 08:46:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 596. [2021-11-07 08:46:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 581 states have (on average 1.2306368330464716) internal successors, (715), 595 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 715 transitions. [2021-11-07 08:46:33,060 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 715 transitions. Word has length 85 [2021-11-07 08:46:33,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:46:33,061 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 715 transitions. [2021-11-07 08:46:33,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:33,061 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 715 transitions. [2021-11-07 08:46:33,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 08:46:33,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:46:33,063 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] [2021-11-07 08:46:33,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 08:46:33,063 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:46:33,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:46:33,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2129403106, now seen corresponding path program 1 times [2021-11-07 08:46:33,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:46:33,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289247114] [2021-11-07 08:46:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:46:33,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:46:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:46:33,817 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 08:46:33,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:46:33,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289247114] [2021-11-07 08:46:33,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289247114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:46:33,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:46:33,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 08:46:33,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864112981] [2021-11-07 08:46:33,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:46:33,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:46:33,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:46:33,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:46:33,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:46:33,818 INFO L87 Difference]: Start difference. First operand 596 states and 715 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:35,891 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 08:46:37,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:46:40,065 WARN L515 Checker$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 08:46:42,235 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:46:44,328 WARN L515 Checker$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 08:46:46,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:46:46,554 INFO L93 Difference]: Finished difference Result 1245 states and 1499 transitions. [2021-11-07 08:46:46,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 08:46:46,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-07 08:46:46,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:46:46,557 INFO L225 Difference]: With dead ends: 1245 [2021-11-07 08:46:46,557 INFO L226 Difference]: Without dead ends: 827 [2021-11-07 08:46:46,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 439.85ms TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-07 08:46:46,559 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 694 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 25 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11801.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.95ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12467.31ms IncrementalHoareTripleChecker+Time [2021-11-07 08:46:46,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 2167 Invalid, 648 Unknown, 0 Unchecked, 7.95ms Time], IncrementalHoareTripleChecker [25 Valid, 618 Invalid, 5 Unknown, 0 Unchecked, 12467.31ms Time] [2021-11-07 08:46:46,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-11-07 08:46:46,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 751. [2021-11-07 08:46:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 736 states have (on average 1.2309782608695652) internal successors, (906), 750 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 08:46:46,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 906 transitions. [2021-11-07 08:46:46,594 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 906 transitions. Word has length 85 [2021-11-07 08:46:46,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:46:46,595 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 906 transitions. [2021-11-07 08:46:46,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:46,595 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 906 transitions. [2021-11-07 08:46:46,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 08:46:46,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:46:46,596 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] [2021-11-07 08:46:46,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 08:46:46,597 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:46:46,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:46:46,597 INFO L85 PathProgramCache]: Analyzing trace with hash -380987548, now seen corresponding path program 1 times [2021-11-07 08:46:46,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:46:46,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749940372] [2021-11-07 08:46:46,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:46:46,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:46:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:46:49,219 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 08:46:49,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:46:49,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749940372] [2021-11-07 08:46:49,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749940372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:46:49,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:46:49,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 08:46:49,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675344443] [2021-11-07 08:46:49,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:46:49,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:46:49,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:46:49,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:46:49,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:46:49,221 INFO L87 Difference]: Start difference. First operand 751 states and 906 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:46:51,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:46:53,398 WARN L515 Checker$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 08:46:55,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:46:57,591 WARN L515 Checker$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 08:46:59,669 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 08:47:02,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:47:02,228 INFO L93 Difference]: Finished difference Result 1347 states and 1618 transitions. [2021-11-07 08:47:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 08:47:02,229 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-07 08:47:02,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:47:02,232 INFO L225 Difference]: With dead ends: 1347 [2021-11-07 08:47:02,233 INFO L226 Difference]: Without dead ends: 891 [2021-11-07 08:47:02,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1641.03ms TimeCoverageRelationStatistics Valid=240, Invalid=572, Unknown=0, NotChecked=0, Total=812 [2021-11-07 08:47:02,235 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 1684 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 65 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11193.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.32ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11744.54ms IncrementalHoareTripleChecker+Time [2021-11-07 08:47:02,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 1375 Invalid, 454 Unknown, 0 Unchecked, 7.32ms Time], IncrementalHoareTripleChecker [65 Valid, 384 Invalid, 5 Unknown, 0 Unchecked, 11744.54ms Time] [2021-11-07 08:47:02,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2021-11-07 08:47:02,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 745. [2021-11-07 08:47:02,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 730 states have (on average 1.2301369863013698) internal successors, (898), 744 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:02,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 898 transitions. [2021-11-07 08:47:02,273 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 898 transitions. Word has length 87 [2021-11-07 08:47:02,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:47:02,273 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 898 transitions. [2021-11-07 08:47:02,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:02,274 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 898 transitions. [2021-11-07 08:47:02,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 08:47:02,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:47:02,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:47:02,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 08:47:02,275 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:47:02,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:47:02,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1898515690, now seen corresponding path program 1 times [2021-11-07 08:47:02,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:47:02,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174215444] [2021-11-07 08:47:02,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:47:02,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:47:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:47:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:47:04,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:47:04,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174215444] [2021-11-07 08:47:04,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174215444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:47:04,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:47:04,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 08:47:04,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68039452] [2021-11-07 08:47:04,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:47:04,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:47:04,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:47:04,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:47:04,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:47:04,032 INFO L87 Difference]: Start difference. First operand 745 states and 898 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:06,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:47:08,306 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 08:47:10,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:47:10,696 INFO L93 Difference]: Finished difference Result 1562 states and 1884 transitions. [2021-11-07 08:47:10,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:47:10,697 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-07 08:47:10,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:47:10,701 INFO L225 Difference]: With dead ends: 1562 [2021-11-07 08:47:10,701 INFO L226 Difference]: Without dead ends: 1427 [2021-11-07 08:47:10,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 697.91ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:47:10,703 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 1069 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 43 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5972.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.50ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6283.64ms IncrementalHoareTripleChecker+Time [2021-11-07 08:47:10,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1069 Valid, 1807 Invalid, 625 Unknown, 0 Unchecked, 8.50ms Time], IncrementalHoareTripleChecker [43 Valid, 580 Invalid, 2 Unknown, 0 Unchecked, 6283.64ms Time] [2021-11-07 08:47:10,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-11-07 08:47:10,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 745. [2021-11-07 08:47:10,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 730 states have (on average 1.2301369863013698) internal successors, (898), 744 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 898 transitions. [2021-11-07 08:47:10,745 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 898 transitions. Word has length 89 [2021-11-07 08:47:10,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:47:10,745 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 898 transitions. [2021-11-07 08:47:10,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:10,746 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 898 transitions. [2021-11-07 08:47:10,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 08:47:10,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:47:10,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:47:10,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 08:47:10,747 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:47:10,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:47:10,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1736920084, now seen corresponding path program 1 times [2021-11-07 08:47:10,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:47:10,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266182308] [2021-11-07 08:47:10,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:47:10,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:47:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:47:13,321 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 08:47:13,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:47:13,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266182308] [2021-11-07 08:47:13,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266182308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:47:13,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:47:13,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-07 08:47:13,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645535175] [2021-11-07 08:47:13,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:47:13,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 08:47:13,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:47:13,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 08:47:13,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-11-07 08:47:13,324 INFO L87 Difference]: Start difference. First operand 745 states and 898 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:15,396 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 08:47:17,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:47:19,640 WARN L515 Checker$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 08:47:21,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:47:23,830 WARN L515 Checker$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 08:47:32,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:47:32,258 INFO L93 Difference]: Finished difference Result 2586 states and 3057 transitions. [2021-11-07 08:47:32,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 08:47:32,258 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-07 08:47:32,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:47:32,265 INFO L225 Difference]: With dead ends: 2586 [2021-11-07 08:47:32,265 INFO L226 Difference]: Without dead ends: 2476 [2021-11-07 08:47:32,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 4491.44ms TimeCoverageRelationStatistics Valid=519, Invalid=1373, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 08:47:32,267 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 4138 mSDsluCounter, 3252 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 144 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14575.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4138 SdHoareTripleChecker+Valid, 3697 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.35ms SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15477.71ms IncrementalHoareTripleChecker+Time [2021-11-07 08:47:32,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4138 Valid, 3697 Invalid, 1714 Unknown, 0 Unchecked, 24.35ms Time], IncrementalHoareTripleChecker [144 Valid, 1565 Invalid, 5 Unknown, 0 Unchecked, 15477.71ms Time] [2021-11-07 08:47:32,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2021-11-07 08:47:32,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 788. [2021-11-07 08:47:32,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 773 states have (on average 1.2238033635187582) internal successors, (946), 787 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:32,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 946 transitions. [2021-11-07 08:47:32,319 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 946 transitions. Word has length 89 [2021-11-07 08:47:32,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:47:32,319 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 946 transitions. [2021-11-07 08:47:32,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:32,320 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 946 transitions. [2021-11-07 08:47:32,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 08:47:32,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:47:32,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:47:32,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 08:47:32,322 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:47:32,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:47:32,322 INFO L85 PathProgramCache]: Analyzing trace with hash -782979926, now seen corresponding path program 1 times [2021-11-07 08:47:32,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:47:32,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028611030] [2021-11-07 08:47:32,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:47:32,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:47:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:47:48,216 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 08:47:48,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:47:48,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028611030] [2021-11-07 08:47:48,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028611030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:47:48,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:47:48,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-07 08:47:48,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779518068] [2021-11-07 08:47:48,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:47:48,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 08:47:48,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:47:48,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 08:47:48,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2021-11-07 08:47:48,218 INFO L87 Difference]: Start difference. First operand 788 states and 946 transitions. Second operand has 25 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:50,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:47:52,389 WARN L515 Checker$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 08:47:54,520 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:47:56,628 WARN L515 Checker$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 08:47:58,691 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:00,790 WARN L515 Checker$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 08:48:02,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:05,008 WARN L515 Checker$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 08:48:21,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:48:21,811 INFO L93 Difference]: Finished difference Result 1624 states and 1934 transitions. [2021-11-07 08:48:21,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 08:48:21,812 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-07 08:48:21,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:48:21,817 INFO L225 Difference]: With dead ends: 1624 [2021-11-07 08:48:21,817 INFO L226 Difference]: Without dead ends: 1622 [2021-11-07 08:48:21,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 12093.17ms TimeCoverageRelationStatistics Valid=482, Invalid=1588, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 08:48:21,819 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 2455 mSDsluCounter, 4215 mSDsCounter, 0 mSdLazyCounter, 2117 mSolverCounterSat, 77 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22592.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2455 SdHoareTripleChecker+Valid, 4496 SdHoareTripleChecker+Invalid, 2202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.97ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2117 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23881.05ms IncrementalHoareTripleChecker+Time [2021-11-07 08:48:21,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2455 Valid, 4496 Invalid, 2202 Unknown, 0 Unchecked, 31.97ms Time], IncrementalHoareTripleChecker [77 Valid, 2117 Invalid, 8 Unknown, 0 Unchecked, 23881.05ms Time] [2021-11-07 08:48:21,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-11-07 08:48:21,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1027. [2021-11-07 08:48:21,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1012 states have (on average 1.2203557312252964) internal successors, (1235), 1026 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:21,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1235 transitions. [2021-11-07 08:48:21,880 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1235 transitions. Word has length 89 [2021-11-07 08:48:21,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:48:21,881 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 1235 transitions. [2021-11-07 08:48:21,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:21,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1235 transitions. [2021-11-07 08:48:21,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 08:48:21,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:48:21,882 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] [2021-11-07 08:48:21,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 08:48:21,883 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:48:21,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:48:21,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2015644358, now seen corresponding path program 1 times [2021-11-07 08:48:21,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:48:21,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532350894] [2021-11-07 08:48:21,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:48:21,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:48:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:48:41,592 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 08:48:41,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:48:41,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532350894] [2021-11-07 08:48:41,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532350894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:48:41,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:48:41,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-07 08:48:41,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546265740] [2021-11-07 08:48:41,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:48:41,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 08:48:41,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:48:41,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 08:48:41,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2021-11-07 08:48:41,595 INFO L87 Difference]: Start difference. First operand 1027 states and 1235 transitions. Second operand has 32 states, 32 states have (on average 2.875) internal successors, (92), 32 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:43,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:45,796 WARN L515 Checker$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 08:48:47,920 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:50,022 WARN L515 Checker$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 08:48:52,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:54,216 WARN L515 Checker$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 08:48:56,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:58,413 WARN L515 Checker$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 08:49:00,537 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:49:02,638 WARN L515 Checker$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 08:49:04,700 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 08:49:28,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:49:28,732 INFO L93 Difference]: Finished difference Result 1764 states and 2097 transitions. [2021-11-07 08:49:28,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 08:49:28,733 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.875) internal successors, (92), 32 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-07 08:49:28,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:49:28,738 INFO L225 Difference]: With dead ends: 1764 [2021-11-07 08:49:28,738 INFO L226 Difference]: Without dead ends: 1762 [2021-11-07 08:49:28,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 17408.61ms TimeCoverageRelationStatistics Valid=782, Invalid=2410, Unknown=0, NotChecked=0, Total=3192 [2021-11-07 08:49:28,740 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 4523 mSDsluCounter, 5577 mSDsCounter, 0 mSdLazyCounter, 2975 mSolverCounterSat, 177 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31515.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4523 SdHoareTripleChecker+Valid, 5993 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.87ms SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 2975 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33337.33ms IncrementalHoareTripleChecker+Time [2021-11-07 08:49:28,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4523 Valid, 5993 Invalid, 3163 Unknown, 0 Unchecked, 41.87ms Time], IncrementalHoareTripleChecker [177 Valid, 2975 Invalid, 11 Unknown, 0 Unchecked, 33337.33ms Time] [2021-11-07 08:49:28,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2021-11-07 08:49:28,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 883. [2021-11-07 08:49:28,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 868 states have (on average 1.2188940092165899) internal successors, (1058), 882 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:28,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1058 transitions. [2021-11-07 08:49:28,799 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1058 transitions. Word has length 92 [2021-11-07 08:49:28,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:49:28,799 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1058 transitions. [2021-11-07 08:49:28,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.875) internal successors, (92), 32 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:28,800 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1058 transitions. [2021-11-07 08:49:28,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:49:28,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:49:28,801 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] [2021-11-07 08:49:28,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 08:49:28,801 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:49:28,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:49:28,802 INFO L85 PathProgramCache]: Analyzing trace with hash 202575411, now seen corresponding path program 1 times [2021-11-07 08:49:28,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:49:28,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114911227] [2021-11-07 08:49:28,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:49:28,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:49:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:49:28,966 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 08:49:28,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:49:28,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114911227] [2021-11-07 08:49:28,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114911227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:49:28,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:49:28,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:49:28,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471322457] [2021-11-07 08:49:28,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:49:28,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:49:28,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:49:28,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:49:28,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:49:28,968 INFO L87 Difference]: Start difference. First operand 883 states and 1058 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:29,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:49:29,305 INFO L93 Difference]: Finished difference Result 1822 states and 2162 transitions. [2021-11-07 08:49:29,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:49:29,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-07 08:49:29,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:49:29,308 INFO L225 Difference]: With dead ends: 1822 [2021-11-07 08:49:29,308 INFO L226 Difference]: Without dead ends: 956 [2021-11-07 08:49:29,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.60ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:49:29,310 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 124 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 237.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 254.88ms IncrementalHoareTripleChecker+Time [2021-11-07 08:49:29,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 789 Invalid, 88 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [15 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 254.88ms Time] [2021-11-07 08:49:29,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-11-07 08:49:29,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 867. [2021-11-07 08:49:29,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 852 states have (on average 1.193661971830986) internal successors, (1017), 866 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:29,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1017 transitions. [2021-11-07 08:49:29,354 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1017 transitions. Word has length 93 [2021-11-07 08:49:29,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:49:29,355 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 1017 transitions. [2021-11-07 08:49:29,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:29,355 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1017 transitions. [2021-11-07 08:49:29,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:49:29,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:49:29,357 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] [2021-11-07 08:49:29,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 08:49:29,357 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:49:29,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:49:29,358 INFO L85 PathProgramCache]: Analyzing trace with hash -150512971, now seen corresponding path program 1 times [2021-11-07 08:49:29,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:49:29,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958626686] [2021-11-07 08:49:29,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:49:29,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:49:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:49:35,401 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 08:49:35,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:49:35,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958626686] [2021-11-07 08:49:35,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958626686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:49:35,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:49:35,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 08:49:35,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106060610] [2021-11-07 08:49:35,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:49:35,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 08:49:35,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:49:35,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 08:49:35,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:49:35,403 INFO L87 Difference]: Start difference. First operand 867 states and 1017 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:37,456 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 08:49:39,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:49:41,650 WARN L515 Checker$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 08:49:43,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:49:45,859 WARN L515 Checker$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 08:49:47,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:49:50,078 WARN L515 Checker$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 08:50:00,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:50:00,264 INFO L93 Difference]: Finished difference Result 2015 states and 2346 transitions. [2021-11-07 08:50:00,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-07 08:50:00,265 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-07 08:50:00,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:50:00,269 INFO L225 Difference]: With dead ends: 2015 [2021-11-07 08:50:00,269 INFO L226 Difference]: Without dead ends: 1574 [2021-11-07 08:50:00,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 7770.09ms TimeCoverageRelationStatistics Valid=671, Invalid=1779, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 08:50:00,270 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 5630 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 183 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17101.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5630 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.29ms SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18000.41ms IncrementalHoareTripleChecker+Time [2021-11-07 08:50:00,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5630 Valid, 2302 Invalid, 1027 Unknown, 0 Unchecked, 17.29ms Time], IncrementalHoareTripleChecker [183 Valid, 837 Invalid, 7 Unknown, 0 Unchecked, 18000.41ms Time] [2021-11-07 08:50:00,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2021-11-07 08:50:00,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 877. [2021-11-07 08:50:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 862 states have (on average 1.1902552204176333) internal successors, (1026), 876 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:00,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1026 transitions. [2021-11-07 08:50:00,335 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1026 transitions. Word has length 93 [2021-11-07 08:50:00,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:50:00,336 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 1026 transitions. [2021-11-07 08:50:00,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:00,336 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1026 transitions. [2021-11-07 08:50:00,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:50:00,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:50:00,337 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] [2021-11-07 08:50:00,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-07 08:50:00,338 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:50:00,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:50:00,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1583523153, now seen corresponding path program 1 times [2021-11-07 08:50:00,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:50:00,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199192391] [2021-11-07 08:50:00,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:50:00,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:50:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:50:01,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:50:01,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:50:01,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199192391] [2021-11-07 08:50:01,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199192391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:50:01,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:50:01,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 08:50:01,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206142211] [2021-11-07 08:50:01,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:50:01,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 08:50:01,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:50:01,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 08:50:01,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-07 08:50:01,731 INFO L87 Difference]: Start difference. First operand 877 states and 1026 transitions. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:03,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:05,880 WARN L515 Checker$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 08:50:07,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:10,093 WARN L515 Checker$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 08:50:12,207 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 08:50:16,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:50:16,936 INFO L93 Difference]: Finished difference Result 1643 states and 1909 transitions. [2021-11-07 08:50:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 08:50:16,936 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-07 08:50:16,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:50:16,941 INFO L225 Difference]: With dead ends: 1643 [2021-11-07 08:50:16,941 INFO L226 Difference]: Without dead ends: 1438 [2021-11-07 08:50:16,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 2368.75ms TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2021-11-07 08:50:16,943 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 1643 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 63 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12724.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 2846 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.65ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13371.77ms IncrementalHoareTripleChecker+Time [2021-11-07 08:50:16,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1643 Valid, 2846 Invalid, 889 Unknown, 0 Unchecked, 14.65ms Time], IncrementalHoareTripleChecker [63 Valid, 821 Invalid, 5 Unknown, 0 Unchecked, 13371.77ms Time] [2021-11-07 08:50:16,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2021-11-07 08:50:17,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 982. [2021-11-07 08:50:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 967 states have (on average 1.1830403309203723) internal successors, (1144), 981 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:17,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1144 transitions. [2021-11-07 08:50:17,016 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1144 transitions. Word has length 93 [2021-11-07 08:50:17,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:50:17,016 INFO L470 AbstractCegarLoop]: Abstraction has 982 states and 1144 transitions. [2021-11-07 08:50:17,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:17,017 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1144 transitions. [2021-11-07 08:50:17,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:50:17,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:50:17,018 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] [2021-11-07 08:50:17,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-07 08:50:17,018 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:50:17,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:50:17,019 INFO L85 PathProgramCache]: Analyzing trace with hash -903464783, now seen corresponding path program 1 times [2021-11-07 08:50:17,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:50:17,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714849530] [2021-11-07 08:50:17,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:50:17,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:50:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:50:17,410 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 08:50:17,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:50:17,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714849530] [2021-11-07 08:50:17,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714849530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:50:17,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:50:17,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:50:17,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806444577] [2021-11-07 08:50:17,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:50:17,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:50:17,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:50:17,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:50:17,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:50:17,412 INFO L87 Difference]: Start difference. First operand 982 states and 1144 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:19,493 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 08:50:20,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:50:20,341 INFO L93 Difference]: Finished difference Result 1455 states and 1699 transitions. [2021-11-07 08:50:20,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:50:20,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-07 08:50:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:50:20,344 INFO L225 Difference]: With dead ends: 1455 [2021-11-07 08:50:20,344 INFO L226 Difference]: Without dead ends: 1079 [2021-11-07 08:50:20,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 90.21ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:50:20,345 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 448 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2662.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.04ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2818.53ms IncrementalHoareTripleChecker+Time [2021-11-07 08:50:20,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 581 Invalid, 196 Unknown, 0 Unchecked, 3.04ms Time], IncrementalHoareTripleChecker [24 Valid, 171 Invalid, 1 Unknown, 0 Unchecked, 2818.53ms Time] [2021-11-07 08:50:20,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2021-11-07 08:50:20,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 964. [2021-11-07 08:50:20,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 949 states have (on average 1.1707060063224446) internal successors, (1111), 963 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:20,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1111 transitions. [2021-11-07 08:50:20,401 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1111 transitions. Word has length 93 [2021-11-07 08:50:20,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:50:20,401 INFO L470 AbstractCegarLoop]: Abstraction has 964 states and 1111 transitions. [2021-11-07 08:50:20,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:20,402 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1111 transitions. [2021-11-07 08:50:20,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:50:20,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:50:20,403 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] [2021-11-07 08:50:20,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-07 08:50:20,404 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:50:20,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:50:20,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1159876431, now seen corresponding path program 1 times [2021-11-07 08:50:20,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:50:20,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579282518] [2021-11-07 08:50:20,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:50:20,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:50:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:50:22,233 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 08:50:22,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:50:22,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579282518] [2021-11-07 08:50:22,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579282518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:50:22,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:50:22,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 08:50:22,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766777524] [2021-11-07 08:50:22,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:50:22,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 08:50:22,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:50:22,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 08:50:22,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:50:22,235 INFO L87 Difference]: Start difference. First operand 964 states and 1111 transitions. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:24,290 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:26,375 WARN L515 Checker$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 08:50:28,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:30,554 WARN L515 Checker$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 08:50:34,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:50:34,236 INFO L93 Difference]: Finished difference Result 1822 states and 2092 transitions. [2021-11-07 08:50:34,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 08:50:34,237 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-07 08:50:34,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:50:34,241 INFO L225 Difference]: With dead ends: 1822 [2021-11-07 08:50:34,241 INFO L226 Difference]: Without dead ends: 1364 [2021-11-07 08:50:34,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1805.00ms TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-11-07 08:50:34,242 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 3838 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 105 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10348.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3838 SdHoareTripleChecker+Valid, 2195 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.93ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10865.48ms IncrementalHoareTripleChecker+Time [2021-11-07 08:50:34,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3838 Valid, 2195 Invalid, 850 Unknown, 0 Unchecked, 13.93ms Time], IncrementalHoareTripleChecker [105 Valid, 741 Invalid, 4 Unknown, 0 Unchecked, 10865.48ms Time] [2021-11-07 08:50:34,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-11-07 08:50:34,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1073. [2021-11-07 08:50:34,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1058 states have (on average 1.166351606805293) internal successors, (1234), 1072 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:34,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1234 transitions. [2021-11-07 08:50:34,304 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1234 transitions. Word has length 93 [2021-11-07 08:50:34,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:50:34,305 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 1234 transitions. [2021-11-07 08:50:34,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:34,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1234 transitions. [2021-11-07 08:50:34,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:50:34,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:50:34,306 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] [2021-11-07 08:50:34,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-07 08:50:34,307 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:50:34,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:50:34,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1082975633, now seen corresponding path program 1 times [2021-11-07 08:50:34,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:50:34,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30615267] [2021-11-07 08:50:34,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:50:34,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:50:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:50:39,981 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 08:50:39,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:50:39,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30615267] [2021-11-07 08:50:39,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30615267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:50:39,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:50:39,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-07 08:50:39,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168682657] [2021-11-07 08:50:39,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:50:39,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 08:50:39,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:50:39,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 08:50:39,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-11-07 08:50:39,983 INFO L87 Difference]: Start difference. First operand 1073 states and 1234 transitions. Second operand has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:42,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:44,125 WARN L515 Checker$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 08:50:46,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:48,318 WARN L515 Checker$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 08:50:50,397 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:52,533 WARN L515 Checker$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 08:50:54,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:56,717 WARN L515 Checker$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 08:51:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:51:08,594 INFO L93 Difference]: Finished difference Result 1593 states and 1804 transitions. [2021-11-07 08:51:08,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 08:51:08,595 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-07 08:51:08,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:51:08,598 INFO L225 Difference]: With dead ends: 1593 [2021-11-07 08:51:08,598 INFO L226 Difference]: Without dead ends: 1353 [2021-11-07 08:51:08,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 9082.35ms TimeCoverageRelationStatistics Valid=860, Invalid=2332, Unknown=0, NotChecked=0, Total=3192 [2021-11-07 08:51:08,600 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 4680 mSDsluCounter, 2903 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 212 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20498.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4680 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.99ms SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21568.73ms IncrementalHoareTripleChecker+Time [2021-11-07 08:51:08,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4680 Valid, 3146 Invalid, 1437 Unknown, 0 Unchecked, 20.99ms Time], IncrementalHoareTripleChecker [212 Valid, 1217 Invalid, 8 Unknown, 0 Unchecked, 21568.73ms Time] [2021-11-07 08:51:08,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2021-11-07 08:51:08,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1068. [2021-11-07 08:51:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1053 states have (on average 1.1595441595441596) internal successors, (1221), 1067 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:08,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1221 transitions. [2021-11-07 08:51:08,665 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1221 transitions. Word has length 93 [2021-11-07 08:51:08,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:51:08,665 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1221 transitions. [2021-11-07 08:51:08,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:08,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1221 transitions. [2021-11-07 08:51:08,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 08:51:08,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:51:08,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:51:08,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-07 08:51:08,667 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:51:08,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:51:08,667 INFO L85 PathProgramCache]: Analyzing trace with hash -230228118, now seen corresponding path program 1 times [2021-11-07 08:51:08,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:51:08,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203085621] [2021-11-07 08:51:08,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:51:08,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:51:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:51:09,177 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 08:51:09,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:51:09,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203085621] [2021-11-07 08:51:09,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203085621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:51:09,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:51:09,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:51:09,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034426661] [2021-11-07 08:51:09,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:51:09,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:51:09,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:51:09,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:51:09,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:51:09,179 INFO L87 Difference]: Start difference. First operand 1068 states and 1221 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:10,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:51:10,201 INFO L93 Difference]: Finished difference Result 1279 states and 1461 transitions. [2021-11-07 08:51:10,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:51:10,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-07 08:51:10,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:51:10,205 INFO L225 Difference]: With dead ends: 1279 [2021-11-07 08:51:10,205 INFO L226 Difference]: Without dead ends: 1273 [2021-11-07 08:51:10,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 364.99ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:51:10,206 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 312 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 707.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.97ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 752.75ms IncrementalHoareTripleChecker+Time [2021-11-07 08:51:10,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 1653 Invalid, 329 Unknown, 0 Unchecked, 3.97ms Time], IncrementalHoareTripleChecker [65 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 752.75ms Time] [2021-11-07 08:51:10,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2021-11-07 08:51:10,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1095. [2021-11-07 08:51:10,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1080 states have (on average 1.151851851851852) internal successors, (1244), 1094 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:10,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1244 transitions. [2021-11-07 08:51:10,271 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1244 transitions. Word has length 95 [2021-11-07 08:51:10,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:51:10,271 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 1244 transitions. [2021-11-07 08:51:10,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:10,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1244 transitions. [2021-11-07 08:51:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 08:51:10,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:51:10,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:51:10,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-07 08:51:10,273 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:51:10,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:51:10,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1039574744, now seen corresponding path program 1 times [2021-11-07 08:51:10,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:51:10,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911001630] [2021-11-07 08:51:10,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:51:10,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:51:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:51:11,606 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 08:51:11,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:51:11,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911001630] [2021-11-07 08:51:11,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911001630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:51:11,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:51:11,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 08:51:11,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323575353] [2021-11-07 08:51:11,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:51:11,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 08:51:11,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:51:11,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 08:51:11,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:51:11,607 INFO L87 Difference]: Start difference. First operand 1095 states and 1244 transitions. Second operand has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:13,728 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:15,864 WARN L515 Checker$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 08:51:17,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:20,056 WARN L515 Checker$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 08:51:22,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:24,237 WARN L515 Checker$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 08:51:26,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:28,428 WARN L515 Checker$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 08:51:33,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:51:33,555 INFO L93 Difference]: Finished difference Result 1689 states and 1899 transitions. [2021-11-07 08:51:33,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 08:51:33,556 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-07 08:51:33,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:51:33,560 INFO L225 Difference]: With dead ends: 1689 [2021-11-07 08:51:33,560 INFO L226 Difference]: Without dead ends: 1472 [2021-11-07 08:51:33,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 2284.79ms TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 08:51:33,562 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 1164 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 50 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19167.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.05ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20138.67ms IncrementalHoareTripleChecker+Time [2021-11-07 08:51:33,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1164 Valid, 2854 Invalid, 1073 Unknown, 0 Unchecked, 14.05ms Time], IncrementalHoareTripleChecker [50 Valid, 1015 Invalid, 8 Unknown, 0 Unchecked, 20138.67ms Time] [2021-11-07 08:51:33,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-11-07 08:51:33,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1090. [2021-11-07 08:51:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 1075 states have (on average 1.1469767441860466) internal successors, (1233), 1089 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:33,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1233 transitions. [2021-11-07 08:51:33,631 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1233 transitions. Word has length 95 [2021-11-07 08:51:33,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:51:33,631 INFO L470 AbstractCegarLoop]: Abstraction has 1090 states and 1233 transitions. [2021-11-07 08:51:33,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:33,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1233 transitions. [2021-11-07 08:51:33,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 08:51:33,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:51:33,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:51:33,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-07 08:51:33,632 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:51:33,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:51:33,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1049745176, now seen corresponding path program 1 times [2021-11-07 08:51:33,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:51:33,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089936517] [2021-11-07 08:51:33,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:51:33,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:51:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:51:37,089 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 08:51:37,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:51:37,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089936517] [2021-11-07 08:51:37,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089936517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:51:37,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:51:37,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 08:51:37,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907801666] [2021-11-07 08:51:37,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:51:37,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 08:51:37,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:51:37,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 08:51:37,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:51:37,091 INFO L87 Difference]: Start difference. First operand 1090 states and 1233 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:39,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:41,243 WARN L515 Checker$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 08:51:43,319 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:45,419 WARN L515 Checker$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 08:51:47,520 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 08:51:57,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:51:57,984 INFO L93 Difference]: Finished difference Result 1612 states and 1800 transitions. [2021-11-07 08:51:57,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-07 08:51:57,985 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-07 08:51:57,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:51:57,988 INFO L225 Difference]: With dead ends: 1612 [2021-11-07 08:51:57,989 INFO L226 Difference]: Without dead ends: 1608 [2021-11-07 08:51:57,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 6630.33ms TimeCoverageRelationStatistics Valid=963, Invalid=3867, Unknown=0, NotChecked=0, Total=4830 [2021-11-07 08:51:57,992 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 3040 mSDsluCounter, 3782 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 281 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14474.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3040 SdHoareTripleChecker+Valid, 4155 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.71ms SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15211.26ms IncrementalHoareTripleChecker+Time [2021-11-07 08:51:57,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3040 Valid, 4155 Invalid, 1859 Unknown, 0 Unchecked, 23.71ms Time], IncrementalHoareTripleChecker [281 Valid, 1573 Invalid, 5 Unknown, 0 Unchecked, 15211.26ms Time] [2021-11-07 08:51:57,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2021-11-07 08:51:58,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1088. [2021-11-07 08:51:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1074 states have (on average 1.1424581005586592) internal successors, (1227), 1087 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1227 transitions. [2021-11-07 08:51:58,067 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1227 transitions. Word has length 95 [2021-11-07 08:51:58,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:51:58,067 INFO L470 AbstractCegarLoop]: Abstraction has 1088 states and 1227 transitions. [2021-11-07 08:51:58,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:58,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1227 transitions. [2021-11-07 08:51:58,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 08:51:58,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:51:58,069 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:51:58,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-07 08:51:58,069 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:51:58,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:51:58,070 INFO L85 PathProgramCache]: Analyzing trace with hash -747514910, now seen corresponding path program 1 times [2021-11-07 08:51:58,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:51:58,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882940192] [2021-11-07 08:51:58,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:51:58,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:52:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:52:04,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:52:04,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:52:04,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882940192] [2021-11-07 08:52:04,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882940192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:52:04,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:52:04,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 08:52:04,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924610940] [2021-11-07 08:52:04,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:52:04,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:52:04,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:52:04,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:52:04,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:52:04,377 INFO L87 Difference]: Start difference. First operand 1088 states and 1227 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:06,430 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 08:52:07,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:52:07,622 INFO L93 Difference]: Finished difference Result 2026 states and 2282 transitions. [2021-11-07 08:52:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:52:07,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-07 08:52:07,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:52:07,626 INFO L225 Difference]: With dead ends: 2026 [2021-11-07 08:52:07,626 INFO L226 Difference]: Without dead ends: 1347 [2021-11-07 08:52:07,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 601.25ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-11-07 08:52:07,628 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 996 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2668.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.48ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2834.10ms IncrementalHoareTripleChecker+Time [2021-11-07 08:52:07,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [996 Valid, 1146 Invalid, 215 Unknown, 0 Unchecked, 4.48ms Time], IncrementalHoareTripleChecker [10 Valid, 204 Invalid, 1 Unknown, 0 Unchecked, 2834.10ms Time] [2021-11-07 08:52:07,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2021-11-07 08:52:07,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1308. [2021-11-07 08:52:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1294 states have (on average 1.1391035548686244) internal successors, (1474), 1307 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:07,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 1474 transitions. [2021-11-07 08:52:07,730 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 1474 transitions. Word has length 99 [2021-11-07 08:52:07,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:52:07,730 INFO L470 AbstractCegarLoop]: Abstraction has 1308 states and 1474 transitions. [2021-11-07 08:52:07,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:07,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 1474 transitions. [2021-11-07 08:52:07,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 08:52:07,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:52:07,733 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] [2021-11-07 08:52:07,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-07 08:52:07,733 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:52:07,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:52:07,733 INFO L85 PathProgramCache]: Analyzing trace with hash -2027609737, now seen corresponding path program 1 times [2021-11-07 08:52:07,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:52:07,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607473645] [2021-11-07 08:52:07,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:52:07,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:52:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:52:08,062 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 08:52:08,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:52:08,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607473645] [2021-11-07 08:52:08,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607473645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:52:08,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:52:08,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:52:08,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344048457] [2021-11-07 08:52:08,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:52:08,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:52:08,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:52:08,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:52:08,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:52:08,064 INFO L87 Difference]: Start difference. First operand 1308 states and 1474 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:08,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:52:08,708 INFO L93 Difference]: Finished difference Result 1838 states and 2058 transitions. [2021-11-07 08:52:08,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:52:08,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-07 08:52:08,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:52:08,712 INFO L225 Difference]: With dead ends: 1838 [2021-11-07 08:52:08,712 INFO L226 Difference]: Without dead ends: 1834 [2021-11-07 08:52:08,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 146.10ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:52:08,713 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 184 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 393.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.32ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 421.38ms IncrementalHoareTripleChecker+Time [2021-11-07 08:52:08,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 1248 Invalid, 167 Unknown, 0 Unchecked, 2.32ms Time], IncrementalHoareTripleChecker [20 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 421.38ms Time] [2021-11-07 08:52:08,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2021-11-07 08:52:08,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1352. [2021-11-07 08:52:08,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1338 states have (on average 1.1345291479820627) internal successors, (1518), 1351 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:08,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1518 transitions. [2021-11-07 08:52:08,806 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1518 transitions. Word has length 102 [2021-11-07 08:52:08,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:52:08,806 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 1518 transitions. [2021-11-07 08:52:08,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:08,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1518 transitions. [2021-11-07 08:52:08,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 08:52:08,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:52:08,808 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:08,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-07 08:52:08,809 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:52:08,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:52:08,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1534894162, now seen corresponding path program 1 times [2021-11-07 08:52:08,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:52:08,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717857487] [2021-11-07 08:52:08,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:52:08,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:52:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:52:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:52:19,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:52:19,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717857487] [2021-11-07 08:52:19,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717857487] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:52:19,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006420806] [2021-11-07 08:52:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:52:19,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:52:19,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 08:52:19,130 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 08:52:19,130 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 08:52:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:52:20,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 3142 conjuncts, 114 conjunts are in the unsatisfiable core [2021-11-07 08:52:20,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:52:20,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-07 08:52:20,831 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 08:52:20,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-07 08:52:21,059 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 25 treesize of output 21 [2021-11-07 08:52:23,759 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-07 08:52:23,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 41 [2021-11-07 08:52:25,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-07 08:52:25,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 08:52:25,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 47 [2021-11-07 08:52:32,461 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 08:52:32,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 228 treesize of output 200 [2021-11-07 08:52:32,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 08:52:32,614 INFO L354 Elim1Store]: treesize reduction 262, result has 12.4 percent of original size [2021-11-07 08:52:32,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 161 treesize of output 138 [2021-11-07 08:52:32,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 159 [2021-11-07 08:52:32,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 37 [2021-11-07 08:52:32,962 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-07 08:52:32,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 54 [2021-11-07 08:52:33,933 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-07 08:52:33,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 44 [2021-11-07 08:52:34,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:52:34,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:52:34,780 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 181 treesize of output 157 [2021-11-07 08:52:34,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-07 08:52:34,786 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:52:34,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-11-07 08:52:34,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202842278] [2021-11-07 08:52:34,786 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-07 08:52:34,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 08:52:34,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:52:34,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 08:52:34,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1613, Unknown=0, NotChecked=0, Total=1806 [2021-11-07 08:52:34,788 INFO L87 Difference]: Start difference. First operand 1352 states and 1518 transitions. Second operand has 21 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:34,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:52:34,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 97 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 5988.24ms TimeCoverageRelationStatistics Valid=193, Invalid=1613, Unknown=0, NotChecked=0, Total=1806 [2021-11-07 08:52:34,790 INFO L933 BasicCegarLoop]: 1 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, 1 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 08:52:34,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 0.02ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 08:52:34,819 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 08:52:34,995 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,SelfDestructingSolverStorable37 [2021-11-07 08:52:34,996 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@11caa466 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 08:52:34,998 INFO L158 Benchmark]: Toolchain (without parser) took 473969.19ms. Allocated memory was 98.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 59.5MB in the beginning and 1.0GB in the end (delta: -966.6MB). Peak memory consumption was 431.6MB. Max. memory is 16.1GB. [2021-11-07 08:52:34,998 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 98.6MB. Free memory is still 56.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 08:52:34,998 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2613.57ms. Allocated memory was 98.6MB in the beginning and 167.8MB in the end (delta: 69.2MB). Free memory was 59.3MB in the beginning and 111.7MB in the end (delta: -52.4MB). Peak memory consumption was 59.3MB. Max. memory is 16.1GB. [2021-11-07 08:52:34,999 INFO L158 Benchmark]: Boogie Procedure Inliner took 230.58ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 97.0MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-07 08:52:34,999 INFO L158 Benchmark]: Boogie Preprocessor took 157.87ms. Allocated memory is still 167.8MB. Free memory was 97.0MB in the beginning and 86.4MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-07 08:52:34,999 INFO L158 Benchmark]: RCFGBuilder took 9019.61ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 86.4MB in the beginning and 120.1MB in the end (delta: -33.7MB). Peak memory consumption was 160.3MB. Max. memory is 16.1GB. [2021-11-07 08:52:34,999 INFO L158 Benchmark]: TraceAbstraction took 461940.19ms. Allocated memory was 293.6MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 120.1MB in the beginning and 1.0GB in the end (delta: -906.0MB). Peak memory consumption was 296.2MB. Max. memory is 16.1GB. [2021-11-07 08:52:35,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 98.6MB. Free memory is still 56.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2613.57ms. Allocated memory was 98.6MB in the beginning and 167.8MB in the end (delta: 69.2MB). Free memory was 59.3MB in the beginning and 111.7MB in the end (delta: -52.4MB). Peak memory consumption was 59.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 230.58ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 97.0MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 157.87ms. Allocated memory is still 167.8MB. Free memory was 97.0MB in the beginning and 86.4MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 9019.61ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 86.4MB in the beginning and 120.1MB in the end (delta: -33.7MB). Peak memory consumption was 160.3MB. Max. memory is 16.1GB. * TraceAbstraction took 461940.19ms. Allocated memory was 293.6MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 120.1MB in the beginning and 1.0GB in the end (delta: -906.0MB). Peak memory consumption was 296.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@11caa466 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@11caa466: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-07 08:52:35,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_append_with_lookup_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 08:52:36,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:52:36,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:52:37,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:52:37,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:52:37,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:52:37,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:52:37,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:52:37,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:52:37,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:52:37,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:52:37,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:52:37,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:52:37,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:52:37,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:52:37,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:52:37,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:52:37,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:52:37,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:52:37,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:52:37,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:52:37,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:52:37,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:52:37,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:52:37,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:52:37,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:52:37,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:52:37,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:52:37,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:52:37,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:52:37,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:52:37,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:52:37,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:52:37,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:52:37,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:52:37,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:52:37,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:52:37,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:52:37,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:52:37,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:52:37,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:52:37,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-07 08:52:37,102 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:52:37,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:52:37,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:52:37,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:52:37,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:52:37,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:52:37,104 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:52:37,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:52:37,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:52:37,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:52:37,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:52:37,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:52:37,105 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 08:52:37,105 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 08:52:37,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:52:37,106 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:52:37,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:52:37,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:52:37,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:52:37,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:52:37,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:52:37,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:52:37,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:52:37,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:52:37,107 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 08:52:37,107 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 08:52:37,107 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:52:37,107 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:52:37,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:52:37,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:52:37,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 08:52:37,107 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 [2021-11-07 08:52:37,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:52:37,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:52:37,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:52:37,463 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:52:37,463 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:52:37,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2021-11-07 08:52:37,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a56aba2/5206972b0335491f8bbb58747039bf52/FLAG8f5382fae [2021-11-07 08:52:38,302 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:52:38,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2021-11-07 08:52:38,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a56aba2/5206972b0335491f8bbb58747039bf52/FLAG8f5382fae [2021-11-07 08:52:38,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a56aba2/5206972b0335491f8bbb58747039bf52 [2021-11-07 08:52:38,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:52:38,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:52:38,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:52:38,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:52:38,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:52:38,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:52:38" (1/1) ... [2021-11-07 08:52:38,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110498dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:38, skipping insertion in model container [2021-11-07 08:52:38,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:52:38" (1/1) ... [2021-11-07 08:52:38,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:52:38,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:52:39,287 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_append_with_lookup_harness.i[4505,4518] [2021-11-07 08:52:39,294 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_append_with_lookup_harness.i[4565,4578] [2021-11-07 08:52:39,326 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:52:39,335 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 08:52:40,149 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,150 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,150 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,151 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,152 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,180 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,181 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,183 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,436 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 08:52:40,437 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 08:52:40,438 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 08:52:40,439 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 08:52:40,440 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 08:52:40,440 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 08:52:40,441 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 08:52:40,441 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 08:52:40,442 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 08:52:40,442 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 08:52:40,538 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 08:52:40,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,572 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,625 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,625 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:52:40,754 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:52:40,780 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_append_with_lookup_harness.i[4505,4518] [2021-11-07 08:52:40,780 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_append_with_lookup_harness.i[4565,4578] [2021-11-07 08:52:40,782 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:52:40,783 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 08:52:40,825 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,826 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,826 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,827 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,827 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,839 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,840 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,841 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,841 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,913 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 08:52:40,914 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 08:52:40,914 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 08:52:40,914 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 08:52:40,915 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 08:52:40,915 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 08:52:40,915 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 08:52:40,916 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 08:52:40,916 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 08:52:40,916 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 08:52:40,935 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 08:52:40,949 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,950 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:40,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:52:41,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:52:41,281 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:52:41,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:41 WrapperNode [2021-11-07 08:52:41,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:52:41,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:52:41,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:52:41,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:52:41,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:41" (1/1) ... [2021-11-07 08:52:41,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:41" (1/1) ... [2021-11-07 08:52:41,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:52:41,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:52:41,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:52:41,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:52:41,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:41" (1/1) ... [2021-11-07 08:52:41,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:41" (1/1) ... [2021-11-07 08:52:41,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:41" (1/1) ... [2021-11-07 08:52:41,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:41" (1/1) ... [2021-11-07 08:52:41,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:41" (1/1) ... [2021-11-07 08:52:41,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:41" (1/1) ... [2021-11-07 08:52:41,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:41" (1/1) ... [2021-11-07 08:52:41,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:52:41,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:52:41,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:52:41,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:52:41,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:41" (1/1) ... [2021-11-07 08:52:41,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:52:41,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 08:52:41,629 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 08:52:41,650 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 08:52:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:52:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 08:52:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 08:52:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 08:52:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:52:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:52:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:52:41,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:52:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 08:52:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 08:52:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-07 08:52:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:52:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:52:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 08:52:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 08:52:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:52:53,209 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:52:53,210 INFO L299 CfgBuilder]: Removed 121 assume(true) statements. [2021-11-07 08:52:53,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:52:53 BoogieIcfgContainer [2021-11-07 08:52:53,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:52:53,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:52:53,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:52:53,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:52:53,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:52:38" (1/3) ... [2021-11-07 08:52:53,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1563b65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:52:53, skipping insertion in model container [2021-11-07 08:52:53,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:41" (2/3) ... [2021-11-07 08:52:53,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1563b65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:52:53, skipping insertion in model container [2021-11-07 08:52:53,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:52:53" (3/3) ... [2021-11-07 08:52:53,219 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_with_lookup_harness.i [2021-11-07 08:52:53,224 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:52:53,224 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-11-07 08:52:53,274 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:52:53,280 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 08:52:53,281 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-11-07 08:52:53,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 252 states, 236 states have (on average 1.4703389830508475) internal successors, (347), 251 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:53,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 08:52:53,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:52:53,308 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] [2021-11-07 08:52:53,309 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:52:53,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:52:53,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1615139171, now seen corresponding path program 1 times [2021-11-07 08:52:53,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:52:53,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142674524] [2021-11-07 08:52:53,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:52:53,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:52:53,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 08:52:53,339 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:52:53,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 08:52:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:52:55,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 08:52:55,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:52:56,135 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 08:52:56,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:52:56,380 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 08:52:56,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:52:56,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142674524] [2021-11-07 08:52:56,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142674524] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:52:56,382 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:52:56,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 08:52:56,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290277531] [2021-11-07 08:52:56,384 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 08:52:56,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:52:56,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:52:56,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:52:56,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:52:56,416 INFO L87 Difference]: Start difference. First operand has 252 states, 236 states have (on average 1.4703389830508475) internal successors, (347), 251 states have internal predecessors, (347), 0 states have call successors, (0), 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 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:56,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:52:56,462 INFO L93 Difference]: Finished difference Result 500 states and 689 transitions. [2021-11-07 08:52:56,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:52:56,464 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 08:52:56,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:52:56,478 INFO L225 Difference]: With dead ends: 500 [2021-11-07 08:52:56,479 INFO L226 Difference]: Without dead ends: 247 [2021-11-07 08:52:56,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.52ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:52:56,488 INFO L933 BasicCegarLoop]: 320 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, 320 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 08:52:56,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 3.84ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 08:52:56,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-07 08:52:56,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2021-11-07 08:52:56,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 232 states have (on average 1.3577586206896552) internal successors, (315), 246 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:56,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 315 transitions. [2021-11-07 08:52:56,559 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 315 transitions. Word has length 47 [2021-11-07 08:52:56,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:52:56,559 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 315 transitions. [2021-11-07 08:52:56,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 315 transitions. [2021-11-07 08:52:56,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 08:52:56,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:52:56,562 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] [2021-11-07 08:52:56,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:52:56,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 08:52:56,764 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:52:56,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:52:56,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1441117657, now seen corresponding path program 1 times [2021-11-07 08:52:56,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:52:56,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473007048] [2021-11-07 08:52:56,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:52:56,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:52:56,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 08:52:56,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:52:56,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 08:52:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:52:59,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:52:59,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:52:59,657 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 08:52:59,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:52:59,919 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 08:52:59,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:52:59,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473007048] [2021-11-07 08:52:59,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473007048] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:52:59,920 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:52:59,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 08:52:59,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68982542] [2021-11-07 08:52:59,920 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 08:52:59,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:52:59,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:52:59,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:52:59,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:52:59,923 INFO L87 Difference]: Start difference. First operand 247 states and 315 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:00,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:53:00,205 INFO L93 Difference]: Finished difference Result 468 states and 596 transitions. [2021-11-07 08:53:00,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:53:00,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 08:53:00,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:53:00,208 INFO L225 Difference]: With dead ends: 468 [2021-11-07 08:53:00,208 INFO L226 Difference]: Without dead ends: 247 [2021-11-07 08:53:00,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:53:00,211 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 389 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 204.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.61ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 229.50ms IncrementalHoareTripleChecker+Time [2021-11-07 08:53:00,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 498 Invalid, 40 Unknown, 0 Unchecked, 5.61ms Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 229.50ms Time] [2021-11-07 08:53:00,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-07 08:53:00,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2021-11-07 08:53:00,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 232 states have (on average 1.3448275862068966) internal successors, (312), 246 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:00,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 312 transitions. [2021-11-07 08:53:00,226 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 312 transitions. Word has length 47 [2021-11-07 08:53:00,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:53:00,226 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 312 transitions. [2021-11-07 08:53:00,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:00,226 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 312 transitions. [2021-11-07 08:53:00,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 08:53:00,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:53:00,233 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] [2021-11-07 08:53:00,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 08:53:00,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 08:53:00,444 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:53:00,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:53:00,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1376891287, now seen corresponding path program 1 times [2021-11-07 08:53:00,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:53:00,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609926318] [2021-11-07 08:53:00,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:53:00,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:53:00,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 08:53:00,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:53:00,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 08:53:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:53:02,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:53:02,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:53:03,105 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 08:53:03,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:53:03,303 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 08:53:03,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:53:03,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609926318] [2021-11-07 08:53:03,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609926318] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:53:03,304 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:53:03,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 08:53:03,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149636957] [2021-11-07 08:53:03,305 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 08:53:03,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:53:03,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:53:03,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:53:03,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:53:03,307 INFO L87 Difference]: Start difference. First operand 247 states and 312 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:03,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:53:03,664 INFO L93 Difference]: Finished difference Result 519 states and 662 transitions. [2021-11-07 08:53:03,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:53:03,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 08:53:03,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:53:03,667 INFO L225 Difference]: With dead ends: 519 [2021-11-07 08:53:03,668 INFO L226 Difference]: Without dead ends: 297 [2021-11-07 08:53:03,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:53:03,669 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 109 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 285.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.12ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 313.43ms IncrementalHoareTripleChecker+Time [2021-11-07 08:53:03,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 875 Invalid, 101 Unknown, 0 Unchecked, 4.12ms Time], IncrementalHoareTripleChecker [17 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 313.43ms Time] [2021-11-07 08:53:03,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-07 08:53:03,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 257. [2021-11-07 08:53:03,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 242 states have (on average 1.3305785123966942) internal successors, (322), 256 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:03,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 322 transitions. [2021-11-07 08:53:03,683 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 322 transitions. Word has length 59 [2021-11-07 08:53:03,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:53:03,683 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 322 transitions. [2021-11-07 08:53:03,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:03,684 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 322 transitions. [2021-11-07 08:53:03,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 08:53:03,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:53:03,685 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] [2021-11-07 08:53:03,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:53:03,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 08:53:03,900 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:53:03,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:53:03,900 INFO L85 PathProgramCache]: Analyzing trace with hash -868688167, now seen corresponding path program 1 times [2021-11-07 08:53:03,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:53:03,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701452383] [2021-11-07 08:53:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:53:03,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:53:03,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 08:53:03,907 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:53:03,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 08:53:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:53:06,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 08:53:06,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:53:06,766 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 08:53:07,164 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 08:53:07,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:53:07,534 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 40 treesize of output 34 [2021-11-07 08:53:07,852 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 08:53:07,852 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:53:07,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701452383] [2021-11-07 08:53:07,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701452383] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:53:07,853 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:53:07,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 13 [2021-11-07 08:53:07,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670807269] [2021-11-07 08:53:07,853 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 08:53:07,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:53:07,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:53:07,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:53:07,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:53:07,855 INFO L87 Difference]: Start difference. First operand 257 states and 322 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:10,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:12,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:53:14,674 INFO L93 Difference]: Finished difference Result 519 states and 654 transitions. [2021-11-07 08:53:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 08:53:14,676 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 08:53:14,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:53:14,678 INFO L225 Difference]: With dead ends: 519 [2021-11-07 08:53:14,678 INFO L226 Difference]: Without dead ends: 289 [2021-11-07 08:53:14,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1123.24ms TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2021-11-07 08:53:14,679 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 471 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5868.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.68ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6141.03ms IncrementalHoareTripleChecker+Time [2021-11-07 08:53:14,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1919 Invalid, 387 Unknown, 0 Unchecked, 14.68ms Time], IncrementalHoareTripleChecker [15 Valid, 370 Invalid, 2 Unknown, 0 Unchecked, 6141.03ms Time] [2021-11-07 08:53:14,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-07 08:53:14,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 255. [2021-11-07 08:53:14,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 240 states have (on average 1.3291666666666666) internal successors, (319), 254 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:14,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 319 transitions. [2021-11-07 08:53:14,695 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 319 transitions. Word has length 59 [2021-11-07 08:53:14,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:53:14,696 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 319 transitions. [2021-11-07 08:53:14,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:14,696 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 319 transitions. [2021-11-07 08:53:14,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 08:53:14,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:53:14,698 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] [2021-11-07 08:53:14,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 08:53:14,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 08:53:14,899 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:53:14,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:53:14,900 INFO L85 PathProgramCache]: Analyzing trace with hash 870622095, now seen corresponding path program 1 times [2021-11-07 08:53:14,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:53:14,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282433950] [2021-11-07 08:53:14,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:53:14,903 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:53:14,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 08:53:14,905 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:53:14,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 08:53:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:53:17,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 08:53:17,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:53:17,539 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-07 08:53:17,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 23 [2021-11-07 08:53:17,775 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 08:53:17,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:53:18,131 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 08:53:18,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:53:18,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282433950] [2021-11-07 08:53:18,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282433950] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:53:18,132 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:53:18,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-07 08:53:18,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098433613] [2021-11-07 08:53:18,132 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 08:53:18,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:53:18,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:53:18,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:53:18,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:53:18,134 INFO L87 Difference]: Start difference. First operand 255 states and 319 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:20,337 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:22,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:53:25,301 INFO L93 Difference]: Finished difference Result 752 states and 937 transitions. [2021-11-07 08:53:25,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:53:25,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 08:53:25,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:53:25,305 INFO L225 Difference]: With dead ends: 752 [2021-11-07 08:53:25,305 INFO L226 Difference]: Without dead ends: 517 [2021-11-07 08:53:25,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 367.63ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:53:25,306 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 663 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 27 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6595.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.09ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6937.21ms IncrementalHoareTripleChecker+Time [2021-11-07 08:53:25,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [663 Valid, 1268 Invalid, 468 Unknown, 0 Unchecked, 13.09ms Time], IncrementalHoareTripleChecker [27 Valid, 439 Invalid, 2 Unknown, 0 Unchecked, 6937.21ms Time] [2021-11-07 08:53:25,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-11-07 08:53:25,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 288. [2021-11-07 08:53:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 273 states have (on average 1.3223443223443223) internal successors, (361), 287 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 361 transitions. [2021-11-07 08:53:25,316 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 361 transitions. Word has length 63 [2021-11-07 08:53:25,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:53:25,316 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 361 transitions. [2021-11-07 08:53:25,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:25,317 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 361 transitions. [2021-11-07 08:53:25,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 08:53:25,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:53:25,318 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] [2021-11-07 08:53:25,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 08:53:25,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 08:53:25,540 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:53:25,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:53:25,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1764108433, now seen corresponding path program 1 times [2021-11-07 08:53:25,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:53:25,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485201064] [2021-11-07 08:53:25,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:53:25,544 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:53:25,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 08:53:25,545 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:53:25,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 08:53:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:53:27,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 1704 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 08:53:27,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:53:28,089 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-07 08:53:28,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 23 [2021-11-07 08:53:28,560 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 08:53:28,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:53:28,976 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 08:53:28,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:53:28,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485201064] [2021-11-07 08:53:28,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485201064] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:53:28,977 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:53:28,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2021-11-07 08:53:28,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195136648] [2021-11-07 08:53:28,977 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 08:53:28,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:53:28,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:53:28,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:53:28,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:53:28,979 INFO L87 Difference]: Start difference. First operand 288 states and 361 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:31,192 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:38,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:53:38,600 INFO L93 Difference]: Finished difference Result 985 states and 1195 transitions. [2021-11-07 08:53:38,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 08:53:38,602 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 08:53:38,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:53:38,606 INFO L225 Difference]: With dead ends: 985 [2021-11-07 08:53:38,606 INFO L226 Difference]: Without dead ends: 682 [2021-11-07 08:53:38,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1594.60ms TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2021-11-07 08:53:38,608 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 795 mSDsluCounter, 3110 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 120 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7779.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.41ms SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8368.55ms IncrementalHoareTripleChecker+Time [2021-11-07 08:53:38,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 3584 Invalid, 1563 Unknown, 0 Unchecked, 22.41ms Time], IncrementalHoareTripleChecker [120 Valid, 1442 Invalid, 1 Unknown, 0 Unchecked, 8368.55ms Time] [2021-11-07 08:53:38,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-11-07 08:53:38,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 286. [2021-11-07 08:53:38,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 271 states have (on average 1.2952029520295203) internal successors, (351), 285 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:38,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 351 transitions. [2021-11-07 08:53:38,620 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 351 transitions. Word has length 63 [2021-11-07 08:53:38,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:53:38,621 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 351 transitions. [2021-11-07 08:53:38,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:38,621 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 351 transitions. [2021-11-07 08:53:38,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 08:53:38,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:53:38,622 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] [2021-11-07 08:53:38,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 08:53:38,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 08:53:38,836 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:53:38,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:53:38,836 INFO L85 PathProgramCache]: Analyzing trace with hash -22464504, now seen corresponding path program 1 times [2021-11-07 08:53:38,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:53:38,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074694288] [2021-11-07 08:53:38,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:53:38,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:53:38,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 08:53:38,841 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:53:38,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 08:53:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:53:41,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:53:41,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:53:41,637 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 08:53:41,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:53:41,843 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 08:53:41,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:53:41,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074694288] [2021-11-07 08:53:41,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074694288] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:53:41,844 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:53:41,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 08:53:41,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080661400] [2021-11-07 08:53:41,844 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 08:53:41,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:53:41,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:53:41,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:53:41,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:53:41,845 INFO L87 Difference]: Start difference. First operand 286 states and 351 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:42,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:53:42,045 INFO L93 Difference]: Finished difference Result 523 states and 644 transitions. [2021-11-07 08:53:42,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:53:42,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 08:53:42,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:53:42,048 INFO L225 Difference]: With dead ends: 523 [2021-11-07 08:53:42,048 INFO L226 Difference]: Without dead ends: 286 [2021-11-07 08:53:42,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.99ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:53:42,049 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 322 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 147.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.32ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.68ms IncrementalHoareTripleChecker+Time [2021-11-07 08:53:42,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 547 Invalid, 36 Unknown, 0 Unchecked, 1.32ms Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 164.68ms Time] [2021-11-07 08:53:42,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-07 08:53:42,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2021-11-07 08:53:42,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 271 states have (on average 1.2878228782287824) internal successors, (349), 285 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:42,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 349 transitions. [2021-11-07 08:53:42,058 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 349 transitions. Word has length 65 [2021-11-07 08:53:42,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:53:42,059 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 349 transitions. [2021-11-07 08:53:42,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:42,059 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 349 transitions. [2021-11-07 08:53:42,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 08:53:42,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:53:42,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:53:42,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 08:53:42,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 08:53:42,279 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:53:42,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:53:42,280 INFO L85 PathProgramCache]: Analyzing trace with hash 173665923, now seen corresponding path program 1 times [2021-11-07 08:53:42,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:53:42,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665511345] [2021-11-07 08:53:42,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:53:42,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:53:42,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 08:53:42,286 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:53:42,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 08:53:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:53:44,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 08:53:44,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:53:45,303 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 08:53:45,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:53:45,562 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 08:53:45,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:53:45,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665511345] [2021-11-07 08:53:45,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665511345] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:53:45,563 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:53:45,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 08:53:45,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856262205] [2021-11-07 08:53:45,564 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 08:53:45,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:53:45,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:53:45,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:53:45,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:53:45,565 INFO L87 Difference]: Start difference. First operand 286 states and 349 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:45,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:53:45,962 INFO L93 Difference]: Finished difference Result 487 states and 596 transitions. [2021-11-07 08:53:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:53:45,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 08:53:45,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:53:45,965 INFO L225 Difference]: With dead ends: 487 [2021-11-07 08:53:45,965 INFO L226 Difference]: Without dead ends: 286 [2021-11-07 08:53:45,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 153.90ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:53:45,966 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 545 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 253.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 281.05ms IncrementalHoareTripleChecker+Time [2021-11-07 08:53:45,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 587 Invalid, 48 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 281.05ms Time] [2021-11-07 08:53:45,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-07 08:53:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2021-11-07 08:53:45,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 271 states have (on average 1.2767527675276753) internal successors, (346), 285 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:45,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 346 transitions. [2021-11-07 08:53:45,974 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 346 transitions. Word has length 67 [2021-11-07 08:53:45,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:53:45,975 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 346 transitions. [2021-11-07 08:53:45,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:45,975 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 346 transitions. [2021-11-07 08:53:45,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 08:53:45,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:53:45,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:53:46,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 08:53:46,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 08:53:46,194 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:53:46,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:53:46,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1920789310, now seen corresponding path program 1 times [2021-11-07 08:53:46,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:53:46,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90050017] [2021-11-07 08:53:46,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:53:46,199 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:53:46,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 08:53:46,201 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:53:46,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 08:53:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:53:49,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 08:53:49,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:53:49,908 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:53:49,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-11-07 08:53:50,022 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 08:53:50,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:53:51,317 INFO L354 Elim1Store]: treesize reduction 39, result has 46.6 percent of original size [2021-11-07 08:53:51,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 49 [2021-11-07 08:53:52,311 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 08:53:52,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:53:52,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90050017] [2021-11-07 08:53:52,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90050017] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:53:52,311 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:53:52,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2021-11-07 08:53:52,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000451930] [2021-11-07 08:53:52,311 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 08:53:52,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:53:52,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:53:52,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:53:52,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:53:52,313 INFO L87 Difference]: Start difference. First operand 286 states and 346 transitions. Second operand has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:54,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:57,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:53:57,309 INFO L93 Difference]: Finished difference Result 591 states and 701 transitions. [2021-11-07 08:53:57,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 08:53:57,312 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 08:53:57,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:53:57,314 INFO L225 Difference]: With dead ends: 591 [2021-11-07 08:53:57,314 INFO L226 Difference]: Without dead ends: 453 [2021-11-07 08:53:57,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2014.50ms TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-11-07 08:53:57,315 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 632 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3610.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.09ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 3849.58ms IncrementalHoareTripleChecker+Time [2021-11-07 08:53:57,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 2597 Invalid, 492 Unknown, 0 Unchecked, 9.09ms Time], IncrementalHoareTripleChecker [7 Valid, 268 Invalid, 1 Unknown, 216 Unchecked, 3849.58ms Time] [2021-11-07 08:53:57,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-07 08:53:57,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 330. [2021-11-07 08:53:57,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 315 states have (on average 1.2634920634920634) internal successors, (398), 329 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:57,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 398 transitions. [2021-11-07 08:53:57,331 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 398 transitions. Word has length 69 [2021-11-07 08:53:57,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:53:57,331 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 398 transitions. [2021-11-07 08:53:57,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:57,332 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 398 transitions. [2021-11-07 08:53:57,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 08:53:57,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:53:57,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:53:57,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 08:53:57,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 08:53:57,550 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:53:57,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:53:57,551 INFO L85 PathProgramCache]: Analyzing trace with hash -378977546, now seen corresponding path program 1 times [2021-11-07 08:53:57,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:53:57,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889936672] [2021-11-07 08:53:57,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:53:57,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:53:57,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 08:53:57,555 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:53:57,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 08:54:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:54:00,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 08:54:00,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:54:00,475 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 13 treesize of output 9 [2021-11-07 08:54:00,494 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 13 treesize of output 9 [2021-11-07 08:54:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:54:01,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:54:01,683 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 38 treesize of output 32 [2021-11-07 08:54:01,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:54:01,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:54:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:54:02,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:54:02,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889936672] [2021-11-07 08:54:02,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889936672] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:54:02,056 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:54:02,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 12] imperfect sequences [] total 17 [2021-11-07 08:54:02,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080305598] [2021-11-07 08:54:02,056 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 08:54:02,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 08:54:02,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:54:02,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 08:54:02,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-07 08:54:02,058 INFO L87 Difference]: Start difference. First operand 330 states and 398 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:04,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:54:06,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:54:08,297 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:54:16,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:54:16,113 INFO L93 Difference]: Finished difference Result 1035 states and 1225 transitions. [2021-11-07 08:54:16,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 08:54:16,114 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 08:54:16,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:54:16,116 INFO L225 Difference]: With dead ends: 1035 [2021-11-07 08:54:16,116 INFO L226 Difference]: Without dead ends: 735 [2021-11-07 08:54:16,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 3596.86ms TimeCoverageRelationStatistics Valid=363, Invalid=1277, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 08:54:16,118 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 1306 mSDsluCounter, 4761 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 105 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10771.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 5307 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.37ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11333.81ms IncrementalHoareTripleChecker+Time [2021-11-07 08:54:16,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1306 Valid, 5307 Invalid, 1254 Unknown, 0 Unchecked, 21.37ms Time], IncrementalHoareTripleChecker [105 Valid, 1146 Invalid, 3 Unknown, 0 Unchecked, 11333.81ms Time] [2021-11-07 08:54:16,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-07 08:54:16,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 483. [2021-11-07 08:54:16,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 468 states have (on average 1.2521367521367521) internal successors, (586), 482 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 586 transitions. [2021-11-07 08:54:16,135 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 586 transitions. Word has length 73 [2021-11-07 08:54:16,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:54:16,135 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 586 transitions. [2021-11-07 08:54:16,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:16,135 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 586 transitions. [2021-11-07 08:54:16,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 08:54:16,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:54:16,136 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 08:54:16,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 08:54:16,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 08:54:16,356 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:54:16,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:54:16,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2065248911, now seen corresponding path program 1 times [2021-11-07 08:54:16,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:54:16,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294180118] [2021-11-07 08:54:16,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:54:16,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:54:16,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 08:54:16,360 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:54:16,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 08:54:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:54:19,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:54:19,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:54:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:54:19,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:54:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:54:19,574 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:54:19,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294180118] [2021-11-07 08:54:19,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294180118] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:54:19,574 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:54:19,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 08:54:19,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181765997] [2021-11-07 08:54:19,575 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 08:54:19,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:54:19,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:54:19,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:54:19,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:54:19,576 INFO L87 Difference]: Start difference. First operand 483 states and 586 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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 08:54:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:54:19,709 INFO L93 Difference]: Finished difference Result 719 states and 864 transitions. [2021-11-07 08:54:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:54:19,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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 08:54:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:54:19,711 INFO L225 Difference]: With dead ends: 719 [2021-11-07 08:54:19,712 INFO L226 Difference]: Without dead ends: 626 [2021-11-07 08:54:19,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 107.60ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:54:19,713 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 277 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.93ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.18ms IncrementalHoareTripleChecker+Time [2021-11-07 08:54:19,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 1357 Invalid, 16 Unknown, 0 Unchecked, 0.93ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 64.18ms Time] [2021-11-07 08:54:19,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-11-07 08:54:19,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 486. [2021-11-07 08:54:19,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 471 states have (on average 1.2505307855626326) internal successors, (589), 485 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 589 transitions. [2021-11-07 08:54:19,728 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 589 transitions. Word has length 76 [2021-11-07 08:54:19,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:54:19,728 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 589 transitions. [2021-11-07 08:54:19,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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 08:54:19,728 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 589 transitions. [2021-11-07 08:54:19,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 08:54:19,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:54:19,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:54:19,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 08:54:19,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 08:54:19,943 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:54:19,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:54:19,944 INFO L85 PathProgramCache]: Analyzing trace with hash 400469109, now seen corresponding path program 1 times [2021-11-07 08:54:19,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:54:19,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454483309] [2021-11-07 08:54:19,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:54:19,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:54:19,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 08:54:19,948 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:54:19,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 08:54:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:54:22,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 08:54:22,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:54:23,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:54:23,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:54:23,828 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 08:54:23,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:54:23,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454483309] [2021-11-07 08:54:23,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454483309] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:54:23,829 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:54:23,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 08:54:23,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444166410] [2021-11-07 08:54:23,829 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 08:54:23,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:54:23,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:54:23,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:54:23,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:54:23,830 INFO L87 Difference]: Start difference. First operand 486 states and 589 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:24,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:54:24,194 INFO L93 Difference]: Finished difference Result 692 states and 840 transitions. [2021-11-07 08:54:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:54:24,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-07 08:54:24,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:54:24,198 INFO L225 Difference]: With dead ends: 692 [2021-11-07 08:54:24,198 INFO L226 Difference]: Without dead ends: 486 [2021-11-07 08:54:24,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 135.80ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:54:24,200 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 545 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 228.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.43ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 259.07ms IncrementalHoareTripleChecker+Time [2021-11-07 08:54:24,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 516 Invalid, 49 Unknown, 0 Unchecked, 1.43ms Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 259.07ms Time] [2021-11-07 08:54:24,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-11-07 08:54:24,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2021-11-07 08:54:24,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 471 states have (on average 1.2441613588110403) internal successors, (586), 485 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:24,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 586 transitions. [2021-11-07 08:54:24,215 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 586 transitions. Word has length 77 [2021-11-07 08:54:24,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:54:24,216 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 586 transitions. [2021-11-07 08:54:24,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:24,216 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 586 transitions. [2021-11-07 08:54:24,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 08:54:24,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:54:24,217 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] [2021-11-07 08:54:24,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 08:54:24,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 08:54:24,435 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:54:24,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:54:24,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1939945845, now seen corresponding path program 1 times [2021-11-07 08:54:24,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:54:24,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364925537] [2021-11-07 08:54:24,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:54:24,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:54:24,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 08:54:24,442 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:54:24,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 08:55:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:55:31,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 08:55:31,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:55:32,043 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 19 treesize of output 1 [2021-11-07 08:55:32,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:55:32,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:55:32,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:55:32,878 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:55:32,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2021-11-07 08:55:33,252 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 08:55:33,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:55:36,062 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_1 (_ BitVec 32)) (v_ULTIMATE.start_aws_byte_cursor_is_bounded_~cursor.base_12 (_ BitVec 64))) (not (= (_ bv0 64) (let ((.cse0 (select (store |c_#memory_int| v_ULTIMATE.start_aws_byte_cursor_is_bounded_~cursor.base_12 (store (select |c_#memory_int| v_ULTIMATE.start_aws_byte_cursor_is_bounded_~cursor.base_12) (_ bv8 64) v_DerPreprocessor_1)) |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.base|))) (concat (select .cse0 (bvadd (_ bv20 64) |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.offset|)) (select .cse0 (bvadd |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.offset| (_ bv16 64)))))))) is different from false [2021-11-07 08:55:43,217 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-07 08:55:43,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 616 treesize of output 544 [2021-11-07 08:55:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:55:48,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:55:48,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364925537] [2021-11-07 08:55:48,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364925537] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:55:48,573 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:55:48,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 12] imperfect sequences [] total 20 [2021-11-07 08:55:48,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628834995] [2021-11-07 08:55:48,573 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 08:55:48,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 08:55:48,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:55:48,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 08:55:48,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=269, Unknown=1, NotChecked=34, Total=380 [2021-11-07 08:55:48,575 INFO L87 Difference]: Start difference. First operand 486 states and 586 transitions. Second operand has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:55:50,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:55:52,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:55:54,798 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:55:57,244 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (= (_ bv0 64) (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.base|))) (concat (select .cse5 (bvadd (_ bv20 64) |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.offset|)) (select .cse5 (bvadd |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.offset| (_ bv16 64)))))))) (let ((.cse1 (not .cse3)) (.cse2 (not |c_ULTIMATE.start_aws_byte_buf_is_valid_#t~short680|))) (and (not (= (_ bv0 64) (let ((.cse0 (select |c_#memory_int| c_ULTIMATE.start_aws_byte_buf_is_valid_~buf.base))) (concat (select .cse0 (_ bv20 64)) (select .cse0 (_ bv16 64)))))) (or (and .cse1 .cse2) (and |c_ULTIMATE.start_aws_byte_buf_is_valid_#t~short680| .cse3)) (= (_ bv0 64) |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.offset|) (= c_ULTIMATE.start_aws_byte_buf_is_valid_~buf.offset (_ bv0 64)) (= c_ULTIMATE.start_aws_byte_buf_is_valid_~buf.offset |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.offset|) (= c_ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf.base |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.base|) (= |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.base| c_ULTIMATE.start_aws_byte_buf_is_valid_~buf.base) .cse1 (forall ((v_DerPreprocessor_1 (_ BitVec 32)) (v_ULTIMATE.start_aws_byte_cursor_is_bounded_~cursor.base_12 (_ BitVec 64))) (not (= (_ bv0 64) (let ((.cse4 (select (store |c_#memory_int| v_ULTIMATE.start_aws_byte_cursor_is_bounded_~cursor.base_12 (store (select |c_#memory_int| v_ULTIMATE.start_aws_byte_cursor_is_bounded_~cursor.base_12) (_ bv8 64) v_DerPreprocessor_1)) |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.base|))) (concat (select .cse4 (bvadd (_ bv20 64) |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.offset|)) (select .cse4 (bvadd |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.offset| (_ bv16 64)))))))) .cse2))) is different from false [2021-11-07 08:55:59,253 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 64) |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.offset|) (not (= (_ bv0 64) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.base|))) (concat (select .cse0 (bvadd (_ bv20 64) |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.offset|)) (select .cse0 (bvadd |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.offset| (_ bv16 64))))))) (forall ((v_DerPreprocessor_1 (_ BitVec 32)) (v_ULTIMATE.start_aws_byte_cursor_is_bounded_~cursor.base_12 (_ BitVec 64))) (not (= (_ bv0 64) (let ((.cse1 (select (store |c_#memory_int| v_ULTIMATE.start_aws_byte_cursor_is_bounded_~cursor.base_12 (store (select |c_#memory_int| v_ULTIMATE.start_aws_byte_cursor_is_bounded_~cursor.base_12) (_ bv8 64) v_DerPreprocessor_1)) |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.base|))) (concat (select .cse1 (bvadd (_ bv20 64) |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.offset|)) (select .cse1 (bvadd |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.offset| (_ bv16 64))))))))) is different from false [2021-11-07 08:56:03,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:56:03,727 INFO L93 Difference]: Finished difference Result 1618 states and 1937 transitions. [2021-11-07 08:56:03,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 08:56:03,728 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-07 08:56:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:56:03,732 INFO L225 Difference]: With dead ends: 1618 [2021-11-07 08:56:03,732 INFO L226 Difference]: Without dead ends: 1241 [2021-11-07 08:56:03,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 15043.06ms TimeCoverageRelationStatistics Valid=208, Invalid=613, Unknown=3, NotChecked=168, Total=992 [2021-11-07 08:56:03,734 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 1755 mSDsluCounter, 3755 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 39 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9358.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1755 SdHoareTripleChecker+Valid, 4052 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.01ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 988 IncrementalHoareTripleChecker+Unchecked, 9832.60ms IncrementalHoareTripleChecker+Time [2021-11-07 08:56:03,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1755 Valid, 4052 Invalid, 1696 Unknown, 0 Unchecked, 19.01ms Time], IncrementalHoareTripleChecker [39 Valid, 666 Invalid, 3 Unknown, 988 Unchecked, 9832.60ms Time] [2021-11-07 08:56:03,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2021-11-07 08:56:03,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 826. [2021-11-07 08:56:03,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 811 states have (on average 1.2404438964241677) internal successors, (1006), 825 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:03,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1006 transitions. [2021-11-07 08:56:03,761 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1006 transitions. Word has length 78 [2021-11-07 08:56:03,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:56:03,762 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 1006 transitions. [2021-11-07 08:56:03,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:03,762 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1006 transitions. [2021-11-07 08:56:03,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 08:56:03,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:56:03,764 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] [2021-11-07 08:56:03,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 08:56:03,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 08:56:03,980 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:56:03,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:56:03,980 INFO L85 PathProgramCache]: Analyzing trace with hash -304037453, now seen corresponding path program 1 times [2021-11-07 08:56:03,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:56:03,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937929385] [2021-11-07 08:56:03,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:56:03,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:56:03,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 08:56:03,985 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:56:03,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 08:56:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:56:06,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:56:06,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:56:06,884 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 08:56:06,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:56:07,059 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 08:56:07,059 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:56:07,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937929385] [2021-11-07 08:56:07,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937929385] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:56:07,059 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:56:07,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 08:56:07,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104765975] [2021-11-07 08:56:07,060 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 08:56:07,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:56:07,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:56:07,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:56:07,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:56:07,061 INFO L87 Difference]: Start difference. First operand 826 states and 1006 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:07,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:56:07,389 INFO L93 Difference]: Finished difference Result 1627 states and 1963 transitions. [2021-11-07 08:56:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:56:07,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-07 08:56:07,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:56:07,392 INFO L225 Difference]: With dead ends: 1627 [2021-11-07 08:56:07,392 INFO L226 Difference]: Without dead ends: 886 [2021-11-07 08:56:07,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.51ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:56:07,394 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 124 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 256.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 281.48ms IncrementalHoareTripleChecker+Time [2021-11-07 08:56:07,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 813 Invalid, 95 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [15 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 281.48ms Time] [2021-11-07 08:56:07,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2021-11-07 08:56:07,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 792. [2021-11-07 08:56:07,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 777 states have (on average 1.2123552123552124) internal successors, (942), 791 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 942 transitions. [2021-11-07 08:56:07,418 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 942 transitions. Word has length 78 [2021-11-07 08:56:07,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:56:07,419 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 942 transitions. [2021-11-07 08:56:07,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:07,419 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 942 transitions. [2021-11-07 08:56:07,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 08:56:07,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:56:07,420 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] [2021-11-07 08:56:07,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 08:56:07,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 08:56:07,639 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-07 08:56:07,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:56:07,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1094104201, now seen corresponding path program 1 times [2021-11-07 08:56:07,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:56:07,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204863040] [2021-11-07 08:56:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:56:07,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:56:07,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 08:56:07,645 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:56:07,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 08:57:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:57:23,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 08:57:23,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:57:23,560 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 19 treesize of output 1 [2021-11-07 08:57:24,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:57:24,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:57:24,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:57:24,407 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:57:24,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2021-11-07 08:57:24,800 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 08:57:24,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:57:27,575 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (v_ULTIMATE.start_aws_byte_cursor_is_bounded_~cursor.base_13 (_ BitVec 64))) (not (= (_ bv0 64) (let ((.cse0 (select (store |c_#memory_int| v_ULTIMATE.start_aws_byte_cursor_is_bounded_~cursor.base_13 (store (select |c_#memory_int| v_ULTIMATE.start_aws_byte_cursor_is_bounded_~cursor.base_13) (_ bv8 64) v_DerPreprocessor_3)) |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.base|))) (concat (select .cse0 (bvadd (_ bv20 64) |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.offset|)) (select .cse0 (bvadd |c_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0.offset| (_ bv16 64)))))))) is different from false [2021-11-07 08:57:34,558 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-07 08:57:34,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1160 treesize of output 1040 Killed by 15