./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_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 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 22:47:06,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 22:47:06,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 22:47:06,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 22:47:06,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 22:47:06,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 22:47:06,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 22:47:06,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 22:47:06,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 22:47:06,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 22:47:06,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 22:47:06,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 22:47:06,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 22:47:06,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 22:47:06,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 22:47:06,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 22:47:06,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 22:47:06,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 22:47:06,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 22:47:06,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 22:47:06,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 22:47:06,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 22:47:06,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 22:47:06,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 22:47:06,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 22:47:06,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 22:47:06,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 22:47:06,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 22:47:06,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 22:47:06,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 22:47:06,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 22:47:06,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 22:47:06,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 22:47:06,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 22:47:06,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 22:47:06,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 22:47:06,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 22:47:06,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 22:47:06,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 22:47:06,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 22:47:06,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 22:47:06,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 22:47:06,128 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 22:47:06,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 22:47:06,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 22:47:06,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 22:47:06,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 22:47:06,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 22:47:06,132 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 22:47:06,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 22:47:06,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 22:47:06,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 22:47:06,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 22:47:06,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 22:47:06,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 22:47:06,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 22:47:06,134 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 22:47:06,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 22:47:06,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 22:47:06,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 22:47:06,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 22:47:06,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 22:47:06,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 22:47:06,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 22:47:06,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 22:47:06,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 22:47:06,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 22:47:06,136 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 22:47:06,136 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 22:47:06,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 22:47:06,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 22:47:06,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c [2021-11-03 22:47:06,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 22:47:06,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 22:47:06,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 22:47:06,356 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 22:47:06,371 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 22:47:06,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i [2021-11-03 22:47:06,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18ea91bb3/b05b0de48b994db590d995a789087740/FLAG778acf260 [2021-11-03 22:47:07,000 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 22:47:07,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i [2021-11-03 22:47:07,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18ea91bb3/b05b0de48b994db590d995a789087740/FLAG778acf260 [2021-11-03 22:47:07,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18ea91bb3/b05b0de48b994db590d995a789087740 [2021-11-03 22:47:07,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 22:47:07,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 22:47:07,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 22:47:07,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 22:47:07,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 22:47:07,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 10:47:07" (1/1) ... [2021-11-03 22:47:07,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595c7397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:47:07, skipping insertion in model container [2021-11-03 22:47:07,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 10:47:07" (1/1) ... [2021-11-03 22:47:07,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 22:47:07,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 22:47:07,447 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_cursor_eq_harness.i[4492,4505] [2021-11-03 22:47:07,452 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_cursor_eq_harness.i[4552,4565] [2021-11-03 22:47:07,466 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 22:47:07,470 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 22:47:08,098 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,102 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,103 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,104 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,105 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,120 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,125 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,129 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,130 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,358 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 22:47:08,359 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 22:47:08,360 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 22:47:08,360 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 22:47:08,361 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 22:47:08,362 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 22:47:08,362 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 22:47:08,362 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 22:47:08,363 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 22:47:08,363 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 22:47:08,453 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 22:47:08,550 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,551 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 22:47:08,653 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 22:47:08,672 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_cursor_eq_harness.i[4492,4505] [2021-11-03 22:47:08,674 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_cursor_eq_harness.i[4552,4565] [2021-11-03 22:47:08,677 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 22:47:08,678 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 22:47:08,706 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,707 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,707 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,707 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,708 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,716 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,717 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,717 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,717 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,751 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 22:47:08,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 22:47:08,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 22:47:08,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 22:47:08,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 22:47:08,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 22:47:08,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 22:47:08,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 22:47:08,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 22:47:08,755 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 22:47:08,773 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 22:47:08,836 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,837 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:47:08,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 22:47:09,011 INFO L208 MainTranslator]: Completed translation [2021-11-03 22:47:09,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:47:09 WrapperNode [2021-11-03 22:47:09,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 22:47:09,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 22:47:09,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 22:47:09,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 22:47:09,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:47:09" (1/1) ... [2021-11-03 22:47:09,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:47:09" (1/1) ... [2021-11-03 22:47:09,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 22:47:09,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 22:47:09,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 22:47:09,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 22:47:09,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:47:09" (1/1) ... [2021-11-03 22:47:09,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:47:09" (1/1) ... [2021-11-03 22:47:09,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:47:09" (1/1) ... [2021-11-03 22:47:09,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:47:09" (1/1) ... [2021-11-03 22:47:09,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:47:09" (1/1) ... [2021-11-03 22:47:09,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:47:09" (1/1) ... [2021-11-03 22:47:09,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:47:09" (1/1) ... [2021-11-03 22:47:09,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 22:47:09,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 22:47:09,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 22:47:09,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 22:47:09,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:47:09" (1/1) ... [2021-11-03 22:47:09,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 22:47:09,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 22:47:09,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 22:47:09,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 22:47:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 22:47:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 22:47:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 22:47:09,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 22:47:09,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 22:47:09,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 22:47:09,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 22:47:09,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 22:47:09,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 22:47:09,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 22:47:09,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 22:47:09,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 22:47:13,975 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 22:47:13,979 INFO L299 CfgBuilder]: Removed 104 assume(true) statements. [2021-11-03 22:47:13,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 10:47:13 BoogieIcfgContainer [2021-11-03 22:47:13,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 22:47:13,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 22:47:13,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 22:47:13,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 22:47:13,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 10:47:07" (1/3) ... [2021-11-03 22:47:13,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b843a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 10:47:13, skipping insertion in model container [2021-11-03 22:47:13,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:47:09" (2/3) ... [2021-11-03 22:47:13,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b843a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 10:47:13, skipping insertion in model container [2021-11-03 22:47:13,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 10:47:13" (3/3) ... [2021-11-03 22:47:13,993 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_harness.i [2021-11-03 22:47:13,998 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 22:47:13,998 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-03 22:47:14,036 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 22:47:14,043 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 22:47:14,044 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-03 22:47:14,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 193 states, 183 states have (on average 1.46448087431694) internal successors, (268), 192 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:14,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 22:47:14,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:14,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:47:14,078 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:47:14,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:14,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2073123034, now seen corresponding path program 1 times [2021-11-03 22:47:14,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:14,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323623392] [2021-11-03 22:47:14,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:14,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:47:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:14,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:14,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323623392] [2021-11-03 22:47:14,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323623392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:14,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:14,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 22:47:14,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206256626] [2021-11-03 22:47:14,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:14,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 22:47:14,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:14,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 22:47:14,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 22:47:14,554 INFO L87 Difference]: Start difference. First operand has 193 states, 183 states have (on average 1.46448087431694) internal successors, (268), 192 states have internal predecessors, (268), 0 states have call successors, (0), 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 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:16,639 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:47:17,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:47:17,673 INFO L93 Difference]: Finished difference Result 382 states and 531 transitions. [2021-11-03 22:47:17,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 22:47:17,675 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-03 22:47:17,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:47:17,681 INFO L225 Difference]: With dead ends: 382 [2021-11-03 22:47:17,681 INFO L226 Difference]: Without dead ends: 186 [2021-11-03 22:47:17,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 22:47:17,685 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2786.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3059.94ms IncrementalHoareTripleChecker+Time [2021-11-03 22:47:17,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 246 Unknown, 0 Unchecked, 3.18ms Time], IncrementalHoareTripleChecker [0 Valid, 245 Invalid, 1 Unknown, 0 Unchecked, 3059.94ms Time] [2021-11-03 22:47:17,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-03 22:47:17,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-11-03 22:47:17,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 177 states have (on average 1.3389830508474576) internal successors, (237), 185 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 237 transitions. [2021-11-03 22:47:17,730 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 237 transitions. Word has length 41 [2021-11-03 22:47:17,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:47:17,732 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 237 transitions. [2021-11-03 22:47:17,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 237 transitions. [2021-11-03 22:47:17,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 22:47:17,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:17,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:47:17,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 22:47:17,735 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:47:17,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:17,738 INFO L85 PathProgramCache]: Analyzing trace with hash 706757656, now seen corresponding path program 1 times [2021-11-03 22:47:17,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:17,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880039678] [2021-11-03 22:47:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:17,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:47:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:18,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:18,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880039678] [2021-11-03 22:47:18,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880039678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:18,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:18,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:47:18,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111160018] [2021-11-03 22:47:18,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:18,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:47:18,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:18,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:47:18,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:47:18,006 INFO L87 Difference]: Start difference. First operand 186 states and 237 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:20,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:47:21,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:47:21,458 INFO L93 Difference]: Finished difference Result 351 states and 447 transitions. [2021-11-03 22:47:21,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 22:47:21,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-03 22:47:21,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:47:21,460 INFO L225 Difference]: With dead ends: 351 [2021-11-03 22:47:21,460 INFO L226 Difference]: Without dead ends: 186 [2021-11-03 22:47:21,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.45ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:47:21,461 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 219 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3134.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.48ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3402.37ms IncrementalHoareTripleChecker+Time [2021-11-03 22:47:21,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 0 Invalid, 377 Unknown, 0 Unchecked, 8.48ms Time], IncrementalHoareTripleChecker [9 Valid, 367 Invalid, 1 Unknown, 0 Unchecked, 3402.37ms Time] [2021-11-03 22:47:21,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-03 22:47:21,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-11-03 22:47:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 177 states have (on average 1.3220338983050848) internal successors, (234), 185 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 234 transitions. [2021-11-03 22:47:21,476 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 234 transitions. Word has length 41 [2021-11-03 22:47:21,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:47:21,476 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 234 transitions. [2021-11-03 22:47:21,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:21,490 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 234 transitions. [2021-11-03 22:47:21,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 22:47:21,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:21,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:47:21,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 22:47:21,497 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:47:21,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:21,498 INFO L85 PathProgramCache]: Analyzing trace with hash 115187874, now seen corresponding path program 1 times [2021-11-03 22:47:21,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:21,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78250860] [2021-11-03 22:47:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:21,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:47:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:22,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:22,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78250860] [2021-11-03 22:47:22,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78250860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:22,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:22,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:47:22,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479056788] [2021-11-03 22:47:22,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:22,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:47:22,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:22,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:47:22,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:47:22,021 INFO L87 Difference]: Start difference. First operand 186 states and 234 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:24,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:47:25,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:47:25,618 INFO L93 Difference]: Finished difference Result 270 states and 336 transitions. [2021-11-03 22:47:25,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:47:25,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-03 22:47:25,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:47:25,620 INFO L225 Difference]: With dead ends: 270 [2021-11-03 22:47:25,620 INFO L226 Difference]: Without dead ends: 186 [2021-11-03 22:47:25,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 270.31ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:47:25,622 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 689 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3247.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.68ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3448.62ms IncrementalHoareTripleChecker+Time [2021-11-03 22:47:25,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 0 Invalid, 447 Unknown, 0 Unchecked, 5.68ms Time], IncrementalHoareTripleChecker [9 Valid, 437 Invalid, 1 Unknown, 0 Unchecked, 3448.62ms Time] [2021-11-03 22:47:25,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-03 22:47:25,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-11-03 22:47:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 177 states have (on average 1.3163841807909604) internal successors, (233), 185 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:25,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 233 transitions. [2021-11-03 22:47:25,641 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 233 transitions. Word has length 45 [2021-11-03 22:47:25,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:47:25,642 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 233 transitions. [2021-11-03 22:47:25,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 233 transitions. [2021-11-03 22:47:25,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 22:47:25,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:25,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:47:25,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 22:47:25,644 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:47:25,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:25,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1630129501, now seen corresponding path program 1 times [2021-11-03 22:47:25,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:25,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507925377] [2021-11-03 22:47:25,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:25,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:47:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:25,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:25,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507925377] [2021-11-03 22:47:25,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507925377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:25,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:25,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:47:25,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101586534] [2021-11-03 22:47:25,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:25,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:47:25,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:25,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:47:25,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:47:25,905 INFO L87 Difference]: Start difference. First operand 186 states and 233 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2021-11-03 22:47:27,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:47:29,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:47:29,316 INFO L93 Difference]: Finished difference Result 326 states and 408 transitions. [2021-11-03 22:47:29,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:47:29,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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 [2021-11-03 22:47:29,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:47:29,318 INFO L225 Difference]: With dead ends: 326 [2021-11-03 22:47:29,318 INFO L226 Difference]: Without dead ends: 186 [2021-11-03 22:47:29,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 111.71ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:47:29,319 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 448 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3056.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.19ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3309.92ms IncrementalHoareTripleChecker+Time [2021-11-03 22:47:29,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 0 Invalid, 439 Unknown, 0 Unchecked, 7.19ms Time], IncrementalHoareTripleChecker [10 Valid, 428 Invalid, 1 Unknown, 0 Unchecked, 3309.92ms Time] [2021-11-03 22:47:29,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-03 22:47:29,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-11-03 22:47:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 177 states have (on average 1.2937853107344632) internal successors, (229), 185 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:29,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 229 transitions. [2021-11-03 22:47:29,352 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 229 transitions. Word has length 47 [2021-11-03 22:47:29,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:47:29,352 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 229 transitions. [2021-11-03 22:47:29,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2021-11-03 22:47:29,362 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 229 transitions. [2021-11-03 22:47:29,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 22:47:29,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:29,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:47:29,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 22:47:29,363 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:47:29,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:29,364 INFO L85 PathProgramCache]: Analyzing trace with hash -240029768, now seen corresponding path program 1 times [2021-11-03 22:47:29,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:29,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806844537] [2021-11-03 22:47:29,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:29,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:47:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:30,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:30,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:30,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806844537] [2021-11-03 22:47:30,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806844537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:30,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:30,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:47:30,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069323217] [2021-11-03 22:47:30,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:30,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:47:30,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:30,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:47:30,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:47:30,007 INFO L87 Difference]: Start difference. First operand 186 states and 229 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:32,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:47:41,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:47:41,687 INFO L93 Difference]: Finished difference Result 1025 states and 1246 transitions. [2021-11-03 22:47:41,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-03 22:47:41,688 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 22:47:41,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:47:41,691 INFO L225 Difference]: With dead ends: 1025 [2021-11-03 22:47:41,691 INFO L226 Difference]: Without dead ends: 931 [2021-11-03 22:47:41,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 2235.67ms TimeCoverageRelationStatistics Valid=411, Invalid=1569, Unknown=0, NotChecked=0, Total=1980 [2021-11-03 22:47:41,693 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1834 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 62 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8902.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.99ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9478.57ms IncrementalHoareTripleChecker+Time [2021-11-03 22:47:41,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1834 Valid, 0 Invalid, 2533 Unknown, 0 Unchecked, 40.99ms Time], IncrementalHoareTripleChecker [62 Valid, 2470 Invalid, 1 Unknown, 0 Unchecked, 9478.57ms Time] [2021-11-03 22:47:41,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-11-03 22:47:41,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 222. [2021-11-03 22:47:41,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 213 states have (on average 1.2816901408450705) internal successors, (273), 221 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 273 transitions. [2021-11-03 22:47:41,707 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 273 transitions. Word has length 49 [2021-11-03 22:47:41,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:47:41,707 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 273 transitions. [2021-11-03 22:47:41,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:41,708 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 273 transitions. [2021-11-03 22:47:41,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 22:47:41,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:41,708 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] [2021-11-03 22:47:41,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 22:47:41,709 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:47:41,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:41,709 INFO L85 PathProgramCache]: Analyzing trace with hash -624624434, now seen corresponding path program 1 times [2021-11-03 22:47:41,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:41,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282188339] [2021-11-03 22:47:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:41,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:47:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:42,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:42,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:42,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282188339] [2021-11-03 22:47:42,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282188339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:42,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:42,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:47:42,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039678008] [2021-11-03 22:47:42,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:42,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:47:42,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:42,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:47:42,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:47:42,245 INFO L87 Difference]: Start difference. First operand 222 states and 273 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:44,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:47:47,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:47:47,644 INFO L93 Difference]: Finished difference Result 381 states and 453 transitions. [2021-11-03 22:47:47,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:47:47,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-03 22:47:47,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:47:47,647 INFO L225 Difference]: With dead ends: 381 [2021-11-03 22:47:47,648 INFO L226 Difference]: Without dead ends: 373 [2021-11-03 22:47:47,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 245.03ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:47:47,649 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 273 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 70 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4827.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.23ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5204.00ms IncrementalHoareTripleChecker+Time [2021-11-03 22:47:47,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 0 Invalid, 1107 Unknown, 0 Unchecked, 9.23ms Time], IncrementalHoareTripleChecker [70 Valid, 1036 Invalid, 1 Unknown, 0 Unchecked, 5204.00ms Time] [2021-11-03 22:47:47,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-11-03 22:47:47,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 238. [2021-11-03 22:47:47,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 229 states have (on average 1.262008733624454) internal successors, (289), 237 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 289 transitions. [2021-11-03 22:47:47,660 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 289 transitions. Word has length 50 [2021-11-03 22:47:47,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:47:47,661 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 289 transitions. [2021-11-03 22:47:47,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:47,661 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 289 transitions. [2021-11-03 22:47:47,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 22:47:47,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:47,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:47:47,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 22:47:47,663 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:47:47,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:47,663 INFO L85 PathProgramCache]: Analyzing trace with hash -718379898, now seen corresponding path program 1 times [2021-11-03 22:47:47,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:47,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000931145] [2021-11-03 22:47:47,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:47,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:47:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:48,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:48,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000931145] [2021-11-03 22:47:48,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000931145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:48,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:48,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:47:48,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253855470] [2021-11-03 22:47:48,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:48,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:47:48,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:48,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:47:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:47:48,022 INFO L87 Difference]: Start difference. First operand 238 states and 289 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:50,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:47:53,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:47:53,345 INFO L93 Difference]: Finished difference Result 466 states and 559 transitions. [2021-11-03 22:47:53,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 22:47:53,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-03 22:47:53,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:47:53,346 INFO L225 Difference]: With dead ends: 466 [2021-11-03 22:47:53,347 INFO L226 Difference]: Without dead ends: 363 [2021-11-03 22:47:53,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 274.96ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:47:53,347 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 386 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4743.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.17ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5085.71ms IncrementalHoareTripleChecker+Time [2021-11-03 22:47:53,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 0 Invalid, 1125 Unknown, 0 Unchecked, 10.17ms Time], IncrementalHoareTripleChecker [32 Valid, 1092 Invalid, 1 Unknown, 0 Unchecked, 5085.71ms Time] [2021-11-03 22:47:53,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-11-03 22:47:53,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 264. [2021-11-03 22:47:53,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 255 states have (on average 1.2588235294117647) internal successors, (321), 263 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:53,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 321 transitions. [2021-11-03 22:47:53,356 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 321 transitions. Word has length 54 [2021-11-03 22:47:53,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:47:53,356 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 321 transitions. [2021-11-03 22:47:53,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:53,356 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 321 transitions. [2021-11-03 22:47:53,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 22:47:53,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:53,357 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] [2021-11-03 22:47:53,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 22:47:53,357 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:47:53,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:53,357 INFO L85 PathProgramCache]: Analyzing trace with hash 124564344, now seen corresponding path program 1 times [2021-11-03 22:47:53,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:53,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659856976] [2021-11-03 22:47:53,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:53,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:47:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:54,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:54,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:54,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659856976] [2021-11-03 22:47:54,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659856976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:54,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:54,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:47:54,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104094572] [2021-11-03 22:47:54,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:54,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:47:54,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:54,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:47:54,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:47:54,062 INFO L87 Difference]: Start difference. First operand 264 states and 321 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:56,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:48:01,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:48:01,986 INFO L93 Difference]: Finished difference Result 762 states and 913 transitions. [2021-11-03 22:48:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-03 22:48:01,987 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-03 22:48:01,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:48:01,988 INFO L225 Difference]: With dead ends: 762 [2021-11-03 22:48:01,988 INFO L226 Difference]: Without dead ends: 623 [2021-11-03 22:48:01,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1276.60ms TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2021-11-03 22:48:01,989 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1470 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 83 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6313.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.29ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6800.55ms IncrementalHoareTripleChecker+Time [2021-11-03 22:48:01,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 0 Invalid, 1492 Unknown, 0 Unchecked, 18.29ms Time], IncrementalHoareTripleChecker [83 Valid, 1408 Invalid, 1 Unknown, 0 Unchecked, 6800.55ms Time] [2021-11-03 22:48:01,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-11-03 22:48:01,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 302. [2021-11-03 22:48:01,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 293 states have (on average 1.2593856655290103) internal successors, (369), 301 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:01,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 369 transitions. [2021-11-03 22:48:01,998 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 369 transitions. Word has length 57 [2021-11-03 22:48:01,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:48:01,998 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 369 transitions. [2021-11-03 22:48:01,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:01,999 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 369 transitions. [2021-11-03 22:48:01,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 22:48:01,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:48:01,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:48:02,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 22:48:02,000 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:48:02,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:48:02,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1734031737, now seen corresponding path program 1 times [2021-11-03 22:48:02,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:48:02,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71026583] [2021-11-03 22:48:02,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:48:02,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:48:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:48:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:48:02,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:48:02,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71026583] [2021-11-03 22:48:02,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71026583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:48:02,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:48:02,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:48:02,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673066205] [2021-11-03 22:48:02,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:48:02,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:48:02,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:48:02,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:48:02,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:48:02,576 INFO L87 Difference]: Start difference. First operand 302 states and 369 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:04,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:48:08,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:48:08,577 INFO L93 Difference]: Finished difference Result 824 states and 991 transitions. [2021-11-03 22:48:08,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 22:48:08,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 22:48:08,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:48:08,579 INFO L225 Difference]: With dead ends: 824 [2021-11-03 22:48:08,579 INFO L226 Difference]: Without dead ends: 610 [2021-11-03 22:48:08,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 648.69ms TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:48:08,580 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1456 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5073.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.82ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5439.60ms IncrementalHoareTripleChecker+Time [2021-11-03 22:48:08,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1456 Valid, 0 Invalid, 1248 Unknown, 0 Unchecked, 12.82ms Time], IncrementalHoareTripleChecker [56 Valid, 1191 Invalid, 1 Unknown, 0 Unchecked, 5439.60ms Time] [2021-11-03 22:48:08,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-11-03 22:48:08,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 302. [2021-11-03 22:48:08,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 293 states have (on average 1.2559726962457338) internal successors, (368), 301 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:08,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 368 transitions. [2021-11-03 22:48:08,590 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 368 transitions. Word has length 60 [2021-11-03 22:48:08,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:48:08,591 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 368 transitions. [2021-11-03 22:48:08,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:08,591 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 368 transitions. [2021-11-03 22:48:08,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 22:48:08,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:48:08,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:48:08,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 22:48:08,592 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:48:08,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:48:08,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1987677883, now seen corresponding path program 1 times [2021-11-03 22:48:08,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:48:08,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166194967] [2021-11-03 22:48:08,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:48:08,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:48:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:48:08,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:48:08,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:48:08,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166194967] [2021-11-03 22:48:08,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166194967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:48:08,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:48:08,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:48:08,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886428773] [2021-11-03 22:48:08,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:48:08,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:48:08,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:48:08,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:48:08,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:48:08,893 INFO L87 Difference]: Start difference. First operand 302 states and 368 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:10,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:48:14,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:48:14,459 INFO L93 Difference]: Finished difference Result 659 states and 789 transitions. [2021-11-03 22:48:14,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 22:48:14,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 22:48:14,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:48:14,461 INFO L225 Difference]: With dead ends: 659 [2021-11-03 22:48:14,461 INFO L226 Difference]: Without dead ends: 450 [2021-11-03 22:48:14,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 344.09ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:48:14,462 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 679 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5007.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.12ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5259.70ms IncrementalHoareTripleChecker+Time [2021-11-03 22:48:14,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [679 Valid, 0 Invalid, 1245 Unknown, 0 Unchecked, 10.12ms Time], IncrementalHoareTripleChecker [24 Valid, 1220 Invalid, 1 Unknown, 0 Unchecked, 5259.70ms Time] [2021-11-03 22:48:14,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-03 22:48:14,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 302. [2021-11-03 22:48:14,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 293 states have (on average 1.2525597269624573) internal successors, (367), 301 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 367 transitions. [2021-11-03 22:48:14,474 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 367 transitions. Word has length 60 [2021-11-03 22:48:14,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:48:14,474 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 367 transitions. [2021-11-03 22:48:14,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:14,474 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 367 transitions. [2021-11-03 22:48:14,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 22:48:14,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:48:14,475 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] [2021-11-03 22:48:14,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 22:48:14,476 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:48:14,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:48:14,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1830554959, now seen corresponding path program 1 times [2021-11-03 22:48:14,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:48:14,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163674698] [2021-11-03 22:48:14,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:48:14,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:48:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:48:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:48:15,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:48:15,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163674698] [2021-11-03 22:48:15,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163674698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:48:15,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:48:15,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:48:15,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258369841] [2021-11-03 22:48:15,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:48:15,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:48:15,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:48:15,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:48:15,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:48:15,138 INFO L87 Difference]: Start difference. First operand 302 states and 367 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:17,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:48:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:48:21,613 INFO L93 Difference]: Finished difference Result 456 states and 538 transitions. [2021-11-03 22:48:21,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 22:48:21,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-11-03 22:48:21,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:48:21,615 INFO L225 Difference]: With dead ends: 456 [2021-11-03 22:48:21,615 INFO L226 Difference]: Without dead ends: 454 [2021-11-03 22:48:21,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 886.08ms TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-11-03 22:48:21,616 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1098 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5406.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.43ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5785.89ms IncrementalHoareTripleChecker+Time [2021-11-03 22:48:21,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 0 Invalid, 1357 Unknown, 0 Unchecked, 12.43ms Time], IncrementalHoareTripleChecker [50 Valid, 1306 Invalid, 1 Unknown, 0 Unchecked, 5785.89ms Time] [2021-11-03 22:48:21,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-11-03 22:48:21,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 331. [2021-11-03 22:48:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 322 states have (on average 1.2515527950310559) internal successors, (403), 330 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:21,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 403 transitions. [2021-11-03 22:48:21,627 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 403 transitions. Word has length 61 [2021-11-03 22:48:21,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:48:21,627 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 403 transitions. [2021-11-03 22:48:21,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:21,627 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 403 transitions. [2021-11-03 22:48:21,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 22:48:21,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:48:21,628 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] [2021-11-03 22:48:21,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 22:48:21,628 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:48:21,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:48:21,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1659492892, now seen corresponding path program 1 times [2021-11-03 22:48:21,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:48:21,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651900303] [2021-11-03 22:48:21,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:48:21,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:48:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:48:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:48:22,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:48:22,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651900303] [2021-11-03 22:48:22,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651900303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:48:22,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:48:22,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:48:22,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206378453] [2021-11-03 22:48:22,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:48:22,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:48:22,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:48:22,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:48:22,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:48:22,070 INFO L87 Difference]: Start difference. First operand 331 states and 403 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:24,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:48:29,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:48:29,745 INFO L93 Difference]: Finished difference Result 524 states and 613 transitions. [2021-11-03 22:48:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 22:48:29,746 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-11-03 22:48:29,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:48:29,747 INFO L225 Difference]: With dead ends: 524 [2021-11-03 22:48:29,747 INFO L226 Difference]: Without dead ends: 424 [2021-11-03 22:48:29,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 891.80ms TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-11-03 22:48:29,748 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 662 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 57 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6347.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.50ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6909.18ms IncrementalHoareTripleChecker+Time [2021-11-03 22:48:29,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [662 Valid, 0 Invalid, 1723 Unknown, 0 Unchecked, 14.50ms Time], IncrementalHoareTripleChecker [57 Valid, 1665 Invalid, 1 Unknown, 0 Unchecked, 6909.18ms Time] [2021-11-03 22:48:29,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-03 22:48:29,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 335. [2021-11-03 22:48:29,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 326 states have (on average 1.2331288343558282) internal successors, (402), 334 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:29,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 402 transitions. [2021-11-03 22:48:29,757 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 402 transitions. Word has length 61 [2021-11-03 22:48:29,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:48:29,758 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 402 transitions. [2021-11-03 22:48:29,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:29,758 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 402 transitions. [2021-11-03 22:48:29,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 22:48:29,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:48:29,759 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] [2021-11-03 22:48:29,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 22:48:29,759 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:48:29,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:48:29,759 INFO L85 PathProgramCache]: Analyzing trace with hash 188662400, now seen corresponding path program 1 times [2021-11-03 22:48:29,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:48:29,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33683684] [2021-11-03 22:48:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:48:29,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:48:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:48:30,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:48:30,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:48:30,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33683684] [2021-11-03 22:48:30,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33683684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:48:30,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:48:30,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:48:30,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368177268] [2021-11-03 22:48:30,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:48:30,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:48:30,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:48:30,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:48:30,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:48:30,319 INFO L87 Difference]: Start difference. First operand 335 states and 402 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:32,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:48:42,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:48:42,450 INFO L93 Difference]: Finished difference Result 807 states and 962 transitions. [2021-11-03 22:48:42,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-03 22:48:42,450 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-11-03 22:48:42,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:48:42,452 INFO L225 Difference]: With dead ends: 807 [2021-11-03 22:48:42,452 INFO L226 Difference]: Without dead ends: 636 [2021-11-03 22:48:42,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1233.62ms TimeCoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2021-11-03 22:48:42,453 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 909 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 3383 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10298.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.08ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3383 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11019.96ms IncrementalHoareTripleChecker+Time [2021-11-03 22:48:42,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [909 Valid, 0 Invalid, 3431 Unknown, 0 Unchecked, 30.08ms Time], IncrementalHoareTripleChecker [47 Valid, 3383 Invalid, 1 Unknown, 0 Unchecked, 11019.96ms Time] [2021-11-03 22:48:42,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-11-03 22:48:42,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 495. [2021-11-03 22:48:42,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 486 states have (on average 1.2469135802469136) internal successors, (606), 494 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:42,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 606 transitions. [2021-11-03 22:48:42,467 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 606 transitions. Word has length 61 [2021-11-03 22:48:42,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:48:42,467 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 606 transitions. [2021-11-03 22:48:42,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:42,468 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 606 transitions. [2021-11-03 22:48:42,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 22:48:42,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:48:42,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:48:42,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 22:48:42,469 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:48:42,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:48:42,469 INFO L85 PathProgramCache]: Analyzing trace with hash -858774998, now seen corresponding path program 1 times [2021-11-03 22:48:42,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:48:42,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344428204] [2021-11-03 22:48:42,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:48:42,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:48:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:48:42,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:48:42,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:48:42,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344428204] [2021-11-03 22:48:42,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344428204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:48:42,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:48:42,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:48:42,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285849590] [2021-11-03 22:48:42,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:48:42,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:48:42,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:48:42,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:48:42,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:48:42,771 INFO L87 Difference]: Start difference. First operand 495 states and 606 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:45,157 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:48:48,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:48:48,450 INFO L93 Difference]: Finished difference Result 617 states and 736 transitions. [2021-11-03 22:48:48,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:48:48,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-03 22:48:48,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:48:48,452 INFO L225 Difference]: With dead ends: 617 [2021-11-03 22:48:48,452 INFO L226 Difference]: Without dead ends: 529 [2021-11-03 22:48:48,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 214.42ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:48:48,453 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 288 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5011.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.41ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5517.35ms IncrementalHoareTripleChecker+Time [2021-11-03 22:48:48,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 0 Invalid, 1008 Unknown, 0 Unchecked, 7.41ms Time], IncrementalHoareTripleChecker [15 Valid, 992 Invalid, 1 Unknown, 0 Unchecked, 5517.35ms Time] [2021-11-03 22:48:48,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-11-03 22:48:48,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 471. [2021-11-03 22:48:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 462 states have (on average 1.2337662337662338) internal successors, (570), 470 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 570 transitions. [2021-11-03 22:48:48,465 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 570 transitions. Word has length 64 [2021-11-03 22:48:48,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:48:48,466 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 570 transitions. [2021-11-03 22:48:48,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:48,466 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 570 transitions. [2021-11-03 22:48:48,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 22:48:48,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:48:48,467 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] [2021-11-03 22:48:48,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 22:48:48,467 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:48:48,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:48:48,468 INFO L85 PathProgramCache]: Analyzing trace with hash 18771313, now seen corresponding path program 1 times [2021-11-03 22:48:48,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:48:48,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576089126] [2021-11-03 22:48:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:48:48,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:48:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:48:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:48:49,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:48:49,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576089126] [2021-11-03 22:48:49,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576089126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:48:49,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:48:49,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:48:49,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087722064] [2021-11-03 22:48:49,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:48:49,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:48:49,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:48:49,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:48:49,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:48:49,362 INFO L87 Difference]: Start difference. First operand 471 states and 570 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:51,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:49:01,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:49:01,655 INFO L93 Difference]: Finished difference Result 916 states and 1095 transitions. [2021-11-03 22:49:01,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 22:49:01,655 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-03 22:49:01,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:49:01,657 INFO L225 Difference]: With dead ends: 916 [2021-11-03 22:49:01,657 INFO L226 Difference]: Without dead ends: 753 [2021-11-03 22:49:01,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1631.36ms TimeCoverageRelationStatistics Valid=267, Invalid=789, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 22:49:01,658 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1586 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 3436 mSolverCounterSat, 93 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10175.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.65ms SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3436 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10921.40ms IncrementalHoareTripleChecker+Time [2021-11-03 22:49:01,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1586 Valid, 0 Invalid, 3530 Unknown, 0 Unchecked, 29.65ms Time], IncrementalHoareTripleChecker [93 Valid, 3436 Invalid, 1 Unknown, 0 Unchecked, 10921.40ms Time] [2021-11-03 22:49:01,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2021-11-03 22:49:01,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 477. [2021-11-03 22:49:01,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 468 states have (on average 1.2307692307692308) internal successors, (576), 476 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:01,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 576 transitions. [2021-11-03 22:49:01,672 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 576 transitions. Word has length 64 [2021-11-03 22:49:01,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:49:01,672 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 576 transitions. [2021-11-03 22:49:01,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:01,672 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 576 transitions. [2021-11-03 22:49:01,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 22:49:01,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:49:01,673 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] [2021-11-03 22:49:01,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 22:49:01,674 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:49:01,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:49:01,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1817151224, now seen corresponding path program 1 times [2021-11-03 22:49:01,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:49:01,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056651554] [2021-11-03 22:49:01,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:49:01,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:49:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:49:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:49:01,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:49:01,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056651554] [2021-11-03 22:49:01,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056651554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:49:01,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:49:02,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:49:02,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55595946] [2021-11-03 22:49:02,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:49:02,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:49:02,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:49:02,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:49:02,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:49:02,000 INFO L87 Difference]: Start difference. First operand 477 states and 576 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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) [2021-11-03 22:49:04,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:49:09,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:49:09,762 INFO L93 Difference]: Finished difference Result 1113 states and 1320 transitions. [2021-11-03 22:49:09,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:49:09,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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 [2021-11-03 22:49:09,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:49:09,766 INFO L225 Difference]: With dead ends: 1113 [2021-11-03 22:49:09,766 INFO L226 Difference]: Without dead ends: 982 [2021-11-03 22:49:09,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 285.28ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:49:09,767 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1361 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6854.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.24ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7427.78ms IncrementalHoareTripleChecker+Time [2021-11-03 22:49:09,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1361 Valid, 0 Invalid, 1850 Unknown, 0 Unchecked, 15.24ms Time], IncrementalHoareTripleChecker [7 Valid, 1842 Invalid, 1 Unknown, 0 Unchecked, 7427.78ms Time] [2021-11-03 22:49:09,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-11-03 22:49:09,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 532. [2021-11-03 22:49:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 523 states have (on average 1.2275334608030593) internal successors, (642), 531 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:09,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 642 transitions. [2021-11-03 22:49:09,789 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 642 transitions. Word has length 65 [2021-11-03 22:49:09,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:49:09,789 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 642 transitions. [2021-11-03 22:49:09,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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) [2021-11-03 22:49:09,789 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 642 transitions. [2021-11-03 22:49:09,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 22:49:09,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:49:09,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:49:09,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 22:49:09,790 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:49:09,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:49:09,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1378303746, now seen corresponding path program 1 times [2021-11-03 22:49:09,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:49:09,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231392281] [2021-11-03 22:49:09,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:49:09,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:49:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:49:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:49:10,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:49:10,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231392281] [2021-11-03 22:49:10,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231392281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:49:10,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:49:10,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:49:10,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648508592] [2021-11-03 22:49:10,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:49:10,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:49:10,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:49:10,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:49:10,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:49:10,166 INFO L87 Difference]: Start difference. First operand 532 states and 642 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:12,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:49:17,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:49:17,978 INFO L93 Difference]: Finished difference Result 884 states and 1052 transitions. [2021-11-03 22:49:17,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 22:49:17,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-03 22:49:17,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:49:17,980 INFO L225 Difference]: With dead ends: 884 [2021-11-03 22:49:17,980 INFO L226 Difference]: Without dead ends: 718 [2021-11-03 22:49:17,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 698.15ms TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:49:17,981 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 357 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1589 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6593.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.77ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1589 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7175.53ms IncrementalHoareTripleChecker+Time [2021-11-03 22:49:17,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 0 Invalid, 1602 Unknown, 0 Unchecked, 13.77ms Time], IncrementalHoareTripleChecker [12 Valid, 1589 Invalid, 1 Unknown, 0 Unchecked, 7175.53ms Time] [2021-11-03 22:49:17,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-11-03 22:49:17,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 532. [2021-11-03 22:49:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 523 states have (on average 1.2237093690248566) internal successors, (640), 531 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 640 transitions. [2021-11-03 22:49:17,996 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 640 transitions. Word has length 66 [2021-11-03 22:49:17,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:49:17,996 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 640 transitions. [2021-11-03 22:49:17,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 640 transitions. [2021-11-03 22:49:17,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 22:49:17,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:49:17,997 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] [2021-11-03 22:49:17,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 22:49:17,998 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:49:17,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:49:17,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1965109760, now seen corresponding path program 1 times [2021-11-03 22:49:17,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:49:17,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151339826] [2021-11-03 22:49:17,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:49:17,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:49:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:49:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:49:18,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:49:18,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151339826] [2021-11-03 22:49:18,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151339826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:49:18,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:49:18,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:49:18,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850109427] [2021-11-03 22:49:18,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:49:18,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:49:18,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:49:18,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:49:18,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:49:18,447 INFO L87 Difference]: Start difference. First operand 532 states and 640 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:20,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:49:25,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:49:25,153 INFO L93 Difference]: Finished difference Result 1155 states and 1382 transitions. [2021-11-03 22:49:25,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 22:49:25,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-03 22:49:25,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:49:25,157 INFO L225 Difference]: With dead ends: 1155 [2021-11-03 22:49:25,157 INFO L226 Difference]: Without dead ends: 653 [2021-11-03 22:49:25,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 208.13ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:49:25,158 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5996.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.15ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6547.21ms IncrementalHoareTripleChecker+Time [2021-11-03 22:49:25,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 1667 Unknown, 0 Unchecked, 10.15ms Time], IncrementalHoareTripleChecker [50 Valid, 1616 Invalid, 1 Unknown, 0 Unchecked, 6547.21ms Time] [2021-11-03 22:49:25,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-11-03 22:49:25,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 532. [2021-11-03 22:49:25,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 523 states have (on average 1.2026768642447419) internal successors, (629), 531 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:25,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 629 transitions. [2021-11-03 22:49:25,175 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 629 transitions. Word has length 66 [2021-11-03 22:49:25,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:49:25,175 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 629 transitions. [2021-11-03 22:49:25,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:25,175 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 629 transitions. [2021-11-03 22:49:25,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 22:49:25,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:49:25,176 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] [2021-11-03 22:49:25,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 22:49:25,176 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:49:25,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:49:25,177 INFO L85 PathProgramCache]: Analyzing trace with hash -276291235, now seen corresponding path program 1 times [2021-11-03 22:49:25,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:49:25,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493686472] [2021-11-03 22:49:25,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:49:25,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:49:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:49:25,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:49:25,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:49:25,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493686472] [2021-11-03 22:49:25,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493686472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:49:25,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:49:25,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:49:25,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057008279] [2021-11-03 22:49:25,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:49:25,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:49:25,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:49:25,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:49:25,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:49:25,341 INFO L87 Difference]: Start difference. First operand 532 states and 629 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2021-11-03 22:49:27,383 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:49:30,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:49:30,404 INFO L93 Difference]: Finished difference Result 1074 states and 1273 transitions. [2021-11-03 22:49:30,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:49:30,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 [2021-11-03 22:49:30,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:49:30,406 INFO L225 Difference]: With dead ends: 1074 [2021-11-03 22:49:30,406 INFO L226 Difference]: Without dead ends: 621 [2021-11-03 22:49:30,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 69.68ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:49:30,407 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 174 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4558.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.57ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4972.22ms IncrementalHoareTripleChecker+Time [2021-11-03 22:49:30,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 0 Invalid, 951 Unknown, 0 Unchecked, 7.57ms Time], IncrementalHoareTripleChecker [36 Valid, 914 Invalid, 1 Unknown, 0 Unchecked, 4972.22ms Time] [2021-11-03 22:49:30,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-11-03 22:49:30,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 532. [2021-11-03 22:49:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 523 states have (on average 1.1644359464627152) internal successors, (609), 531 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:30,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 609 transitions. [2021-11-03 22:49:30,423 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 609 transitions. Word has length 72 [2021-11-03 22:49:30,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:49:30,423 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 609 transitions. [2021-11-03 22:49:30,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2021-11-03 22:49:30,423 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 609 transitions. [2021-11-03 22:49:30,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 22:49:30,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:49:30,424 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] [2021-11-03 22:49:30,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 22:49:30,425 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:49:30,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:49:30,425 INFO L85 PathProgramCache]: Analyzing trace with hash -871921447, now seen corresponding path program 1 times [2021-11-03 22:49:30,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:49:30,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437275967] [2021-11-03 22:49:30,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:49:30,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:49:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:49:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:49:32,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:49:32,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437275967] [2021-11-03 22:49:32,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437275967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:49:32,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:49:32,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:49:32,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071065174] [2021-11-03 22:49:32,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:49:32,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:49:32,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:49:32,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:49:32,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:49:32,736 INFO L87 Difference]: Start difference. First operand 532 states and 609 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) [2021-11-03 22:49:34,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:49:39,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:49:39,917 INFO L93 Difference]: Finished difference Result 1051 states and 1200 transitions. [2021-11-03 22:49:39,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 22:49:39,918 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 [2021-11-03 22:49:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:49:39,919 INFO L225 Difference]: With dead ends: 1051 [2021-11-03 22:49:39,919 INFO L226 Difference]: Without dead ends: 594 [2021-11-03 22:49:39,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 580.12ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:49:39,920 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 580 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6079.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.55ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6766.88ms IncrementalHoareTripleChecker+Time [2021-11-03 22:49:39,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 0 Invalid, 1855 Unknown, 0 Unchecked, 13.55ms Time], IncrementalHoareTripleChecker [6 Valid, 1848 Invalid, 1 Unknown, 0 Unchecked, 6766.88ms Time] [2021-11-03 22:49:39,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-03 22:49:39,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 536. [2021-11-03 22:49:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 527 states have (on average 1.1631878557874762) internal successors, (613), 535 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:39,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 613 transitions. [2021-11-03 22:49:39,953 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 613 transitions. Word has length 72 [2021-11-03 22:49:39,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:49:39,954 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 613 transitions. [2021-11-03 22:49:39,954 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) [2021-11-03 22:49:39,954 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 613 transitions. [2021-11-03 22:49:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 22:49:39,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:49:39,955 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] [2021-11-03 22:49:39,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-03 22:49:39,955 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:49:39,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:49:39,956 INFO L85 PathProgramCache]: Analyzing trace with hash -590596247, now seen corresponding path program 1 times [2021-11-03 22:49:39,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:49:39,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591977829] [2021-11-03 22:49:39,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:49:39,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:49:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:49:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:49:40,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:49:40,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591977829] [2021-11-03 22:49:40,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591977829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:49:40,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:49:40,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 22:49:40,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770922454] [2021-11-03 22:49:40,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:49:40,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 22:49:40,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:49:40,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 22:49:40,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:49:40,721 INFO L87 Difference]: Start difference. First operand 536 states and 613 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:43,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:49:59,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:49:59,859 INFO L93 Difference]: Finished difference Result 1937 states and 2189 transitions. [2021-11-03 22:49:59,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-03 22:49:59,859 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 22:49:59,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:49:59,863 INFO L225 Difference]: With dead ends: 1937 [2021-11-03 22:49:59,863 INFO L226 Difference]: Without dead ends: 1794 [2021-11-03 22:49:59,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2437 ImplicationChecksByTransitivity, 5027.24ms TimeCoverageRelationStatistics Valid=1192, Invalid=6118, Unknown=0, NotChecked=0, Total=7310 [2021-11-03 22:49:59,865 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3703 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 4663 mSolverCounterSat, 115 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13322.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3703 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.74ms SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 4663 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14253.54ms IncrementalHoareTripleChecker+Time [2021-11-03 22:49:59,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3703 Valid, 0 Invalid, 4779 Unknown, 0 Unchecked, 42.74ms Time], IncrementalHoareTripleChecker [115 Valid, 4663 Invalid, 1 Unknown, 0 Unchecked, 14253.54ms Time] [2021-11-03 22:49:59,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2021-11-03 22:49:59,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 610. [2021-11-03 22:49:59,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 601 states have (on average 1.1597337770382696) internal successors, (697), 609 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:59,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 697 transitions. [2021-11-03 22:49:59,886 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 697 transitions. Word has length 73 [2021-11-03 22:49:59,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:49:59,886 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 697 transitions. [2021-11-03 22:49:59,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:59,886 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 697 transitions. [2021-11-03 22:49:59,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 22:49:59,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:49:59,887 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] [2021-11-03 22:49:59,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 22:49:59,887 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:49:59,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:49:59,888 INFO L85 PathProgramCache]: Analyzing trace with hash 704129967, now seen corresponding path program 1 times [2021-11-03 22:49:59,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:49:59,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603860089] [2021-11-03 22:49:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:49:59,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:49:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:50:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:50:00,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:50:00,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603860089] [2021-11-03 22:50:00,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603860089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:50:00,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:50:00,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:50:00,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791966057] [2021-11-03 22:50:00,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:50:00,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:50:00,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:50:00,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:50:00,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:50:00,215 INFO L87 Difference]: Start difference. First operand 610 states and 697 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 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) [2021-11-03 22:50:02,772 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:50:08,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:50:08,355 INFO L93 Difference]: Finished difference Result 1204 states and 1368 transitions. [2021-11-03 22:50:08,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 22:50:08,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 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 74 [2021-11-03 22:50:08,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:50:08,358 INFO L225 Difference]: With dead ends: 1204 [2021-11-03 22:50:08,358 INFO L226 Difference]: Without dead ends: 1032 [2021-11-03 22:50:08,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 587.15ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:50:08,358 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1091 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7006.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.80ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7610.37ms IncrementalHoareTripleChecker+Time [2021-11-03 22:50:08,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1091 Valid, 0 Invalid, 1782 Unknown, 0 Unchecked, 13.80ms Time], IncrementalHoareTripleChecker [18 Valid, 1763 Invalid, 1 Unknown, 0 Unchecked, 7610.37ms Time] [2021-11-03 22:50:08,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2021-11-03 22:50:08,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 645. [2021-11-03 22:50:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 636 states have (on average 1.1588050314465408) internal successors, (737), 644 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 737 transitions. [2021-11-03 22:50:08,377 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 737 transitions. Word has length 74 [2021-11-03 22:50:08,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:50:08,377 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 737 transitions. [2021-11-03 22:50:08,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 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) [2021-11-03 22:50:08,377 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 737 transitions. [2021-11-03 22:50:08,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 22:50:08,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:50:08,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:50:08,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 22:50:08,379 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:50:08,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:50:08,379 INFO L85 PathProgramCache]: Analyzing trace with hash -894538693, now seen corresponding path program 1 times [2021-11-03 22:50:08,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:50:08,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366026445] [2021-11-03 22:50:08,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:50:08,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:50:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:50:09,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:50:09,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:50:09,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366026445] [2021-11-03 22:50:09,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366026445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:50:09,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:50:09,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:50:09,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839352027] [2021-11-03 22:50:09,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:50:09,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:50:09,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:50:09,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:50:09,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:50:09,031 INFO L87 Difference]: Start difference. First operand 645 states and 737 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:11,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:50:16,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:50:16,615 INFO L93 Difference]: Finished difference Result 884 states and 1006 transitions. [2021-11-03 22:50:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 22:50:16,616 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-03 22:50:16,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:50:16,618 INFO L225 Difference]: With dead ends: 884 [2021-11-03 22:50:16,618 INFO L226 Difference]: Without dead ends: 882 [2021-11-03 22:50:16,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 546.01ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-03 22:50:16,619 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 888 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6668.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.52ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7229.27ms IncrementalHoareTripleChecker+Time [2021-11-03 22:50:16,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [888 Valid, 0 Invalid, 1831 Unknown, 0 Unchecked, 13.52ms Time], IncrementalHoareTripleChecker [13 Valid, 1817 Invalid, 1 Unknown, 0 Unchecked, 7229.27ms Time] [2021-11-03 22:50:16,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2021-11-03 22:50:16,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 673. [2021-11-03 22:50:16,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 664 states have (on average 1.1596385542168675) internal successors, (770), 672 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:16,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 770 transitions. [2021-11-03 22:50:16,636 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 770 transitions. Word has length 75 [2021-11-03 22:50:16,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:50:16,637 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 770 transitions. [2021-11-03 22:50:16,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:16,637 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 770 transitions. [2021-11-03 22:50:16,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 22:50:16,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:50:16,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:50:16,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 22:50:16,638 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:50:16,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:50:16,638 INFO L85 PathProgramCache]: Analyzing trace with hash -723476626, now seen corresponding path program 1 times [2021-11-03 22:50:16,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:50:16,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753058654] [2021-11-03 22:50:16,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:50:16,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:50:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:50:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:50:16,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:50:16,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753058654] [2021-11-03 22:50:16,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753058654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:50:16,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:50:16,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:50:16,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415152535] [2021-11-03 22:50:16,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:50:16,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:50:16,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:50:16,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:50:16,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:50:16,895 INFO L87 Difference]: Start difference. First operand 673 states and 770 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:19,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:50:23,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:50:23,707 INFO L93 Difference]: Finished difference Result 991 states and 1127 transitions. [2021-11-03 22:50:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 22:50:23,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-03 22:50:23,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:50:23,709 INFO L225 Difference]: With dead ends: 991 [2021-11-03 22:50:23,709 INFO L226 Difference]: Without dead ends: 774 [2021-11-03 22:50:23,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 441.13ms TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:50:23,710 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 448 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5898.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.06ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6405.90ms IncrementalHoareTripleChecker+Time [2021-11-03 22:50:23,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 0 Invalid, 1860 Unknown, 0 Unchecked, 11.06ms Time], IncrementalHoareTripleChecker [29 Valid, 1830 Invalid, 1 Unknown, 0 Unchecked, 6405.90ms Time] [2021-11-03 22:50:23,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-03 22:50:23,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 696. [2021-11-03 22:50:23,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 687 states have (on average 1.1601164483260553) internal successors, (797), 695 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:23,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 797 transitions. [2021-11-03 22:50:23,728 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 797 transitions. Word has length 75 [2021-11-03 22:50:23,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:50:23,728 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 797 transitions. [2021-11-03 22:50:23,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:23,729 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 797 transitions. [2021-11-03 22:50:23,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 22:50:23,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:50:23,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:50:23,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 22:50:23,730 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:50:23,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:50:23,730 INFO L85 PathProgramCache]: Analyzing trace with hash -682364274, now seen corresponding path program 1 times [2021-11-03 22:50:23,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:50:23,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577156756] [2021-11-03 22:50:23,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:50:23,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:50:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:50:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:50:26,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:50:26,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577156756] [2021-11-03 22:50:26,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577156756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:50:26,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:50:26,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 22:50:26,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477294977] [2021-11-03 22:50:26,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:50:26,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 22:50:26,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:50:26,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 22:50:26,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:50:26,289 INFO L87 Difference]: Start difference. First operand 696 states and 797 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:28,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:50:46,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:50:46,708 INFO L93 Difference]: Finished difference Result 1615 states and 1818 transitions. [2021-11-03 22:50:46,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 22:50:46,709 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-03 22:50:46,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:50:46,712 INFO L225 Difference]: With dead ends: 1615 [2021-11-03 22:50:46,712 INFO L226 Difference]: Without dead ends: 1429 [2021-11-03 22:50:46,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 2578.52ms TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 22:50:46,713 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1930 mSDsluCounter, 4253 mSDsCounter, 0 mSdLazyCounter, 6464 mSolverCounterSat, 57 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17155.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1930 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.62ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 6464 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18217.70ms IncrementalHoareTripleChecker+Time [2021-11-03 22:50:46,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1930 Valid, 0 Invalid, 6522 Unknown, 0 Unchecked, 49.62ms Time], IncrementalHoareTripleChecker [57 Valid, 6464 Invalid, 1 Unknown, 0 Unchecked, 18217.70ms Time] [2021-11-03 22:50:46,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2021-11-03 22:50:46,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 712. [2021-11-03 22:50:46,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 703 states have (on average 1.159317211948791) internal successors, (815), 711 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:46,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 815 transitions. [2021-11-03 22:50:46,742 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 815 transitions. Word has length 75 [2021-11-03 22:50:46,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:50:46,742 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 815 transitions. [2021-11-03 22:50:46,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 815 transitions. [2021-11-03 22:50:46,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 22:50:46,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:50:46,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:50:46,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 22:50:46,744 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:50:46,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:50:46,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1279210384, now seen corresponding path program 1 times [2021-11-03 22:50:46,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:50:46,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726926289] [2021-11-03 22:50:46,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:50:46,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:50:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:50:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:50:46,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:50:46,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726926289] [2021-11-03 22:50:46,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726926289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:50:46,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:50:46,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:50:46,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693767115] [2021-11-03 22:50:46,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:50:46,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:50:46,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:50:46,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:50:46,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:50:46,903 INFO L87 Difference]: Start difference. First operand 712 states and 815 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:48,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:50:51,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:50:51,292 INFO L93 Difference]: Finished difference Result 1353 states and 1552 transitions. [2021-11-03 22:50:51,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:50:51,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-03 22:50:51,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:50:51,294 INFO L225 Difference]: With dead ends: 1353 [2021-11-03 22:50:51,294 INFO L226 Difference]: Without dead ends: 731 [2021-11-03 22:50:51,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.37ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:50:51,295 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3757.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.93ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4316.60ms IncrementalHoareTripleChecker+Time [2021-11-03 22:50:51,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 707 Unknown, 0 Unchecked, 3.93ms Time], IncrementalHoareTripleChecker [25 Valid, 681 Invalid, 1 Unknown, 0 Unchecked, 4316.60ms Time] [2021-11-03 22:50:51,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-11-03 22:50:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 665. [2021-11-03 22:50:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 656 states have (on average 1.146341463414634) internal successors, (752), 664 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 752 transitions. [2021-11-03 22:50:51,348 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 752 transitions. Word has length 75 [2021-11-03 22:50:51,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:50:51,363 INFO L470 AbstractCegarLoop]: Abstraction has 665 states and 752 transitions. [2021-11-03 22:50:51,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:51,364 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 752 transitions. [2021-11-03 22:50:51,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 22:50:51,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:50:51,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:50:51,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-03 22:50:51,365 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:50:51,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:50:51,366 INFO L85 PathProgramCache]: Analyzing trace with hash 778478806, now seen corresponding path program 1 times [2021-11-03 22:50:51,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:50:51,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322236014] [2021-11-03 22:50:51,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:50:51,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:50:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:50:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:50:52,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:50:52,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322236014] [2021-11-03 22:50:52,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322236014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:50:52,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:50:52,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:50:52,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183335532] [2021-11-03 22:50:52,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:50:52,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:50:52,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:50:52,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:50:52,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:50:52,015 INFO L87 Difference]: Start difference. First operand 665 states and 752 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:54,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:51:01,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:51:01,383 INFO L93 Difference]: Finished difference Result 1287 states and 1433 transitions. [2021-11-03 22:51:01,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 22:51:01,384 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-03 22:51:01,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:51:01,386 INFO L225 Difference]: With dead ends: 1287 [2021-11-03 22:51:01,386 INFO L226 Difference]: Without dead ends: 1071 [2021-11-03 22:51:01,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 828.01ms TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-11-03 22:51:01,387 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1391 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8051.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.82ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8693.68ms IncrementalHoareTripleChecker+Time [2021-11-03 22:51:01,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 0 Invalid, 2414 Unknown, 0 Unchecked, 20.82ms Time], IncrementalHoareTripleChecker [53 Valid, 2360 Invalid, 1 Unknown, 0 Unchecked, 8693.68ms Time] [2021-11-03 22:51:01,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2021-11-03 22:51:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 678. [2021-11-03 22:51:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 669 states have (on average 1.1420029895366217) internal successors, (764), 677 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:01,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 764 transitions. [2021-11-03 22:51:01,437 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 764 transitions. Word has length 76 [2021-11-03 22:51:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:51:01,437 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 764 transitions. [2021-11-03 22:51:01,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:01,438 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 764 transitions. [2021-11-03 22:51:01,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 22:51:01,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:51:01,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:51:01,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-03 22:51:01,439 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:51:01,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:51:01,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1923291554, now seen corresponding path program 1 times [2021-11-03 22:51:01,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:51:01,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929996895] [2021-11-03 22:51:01,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:51:01,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:51:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:51:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:51:01,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:51:01,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929996895] [2021-11-03 22:51:01,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929996895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:51:01,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:51:01,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:51:01,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337925034] [2021-11-03 22:51:01,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:51:01,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:51:01,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:51:01,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:51:01,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:51:01,716 INFO L87 Difference]: Start difference. First operand 678 states and 764 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:04,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:51:07,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:51:07,268 INFO L93 Difference]: Finished difference Result 962 states and 1073 transitions. [2021-11-03 22:51:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:51:07,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-03 22:51:07,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:51:07,271 INFO L225 Difference]: With dead ends: 962 [2021-11-03 22:51:07,271 INFO L226 Difference]: Without dead ends: 751 [2021-11-03 22:51:07,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 188.69ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:51:07,272 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 473 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4931.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.00ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5405.45ms IncrementalHoareTripleChecker+Time [2021-11-03 22:51:07,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 0 Invalid, 1060 Unknown, 0 Unchecked, 5.00ms Time], IncrementalHoareTripleChecker [13 Valid, 1046 Invalid, 1 Unknown, 0 Unchecked, 5405.45ms Time] [2021-11-03 22:51:07,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-11-03 22:51:07,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 678. [2021-11-03 22:51:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 669 states have (on average 1.1390134529147982) internal successors, (762), 677 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 762 transitions. [2021-11-03 22:51:07,292 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 762 transitions. Word has length 76 [2021-11-03 22:51:07,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:51:07,292 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 762 transitions. [2021-11-03 22:51:07,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:07,292 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 762 transitions. [2021-11-03 22:51:07,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 22:51:07,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:51:07,293 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] [2021-11-03 22:51:07,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 22:51:07,294 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:51:07,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:51:07,294 INFO L85 PathProgramCache]: Analyzing trace with hash -770955337, now seen corresponding path program 1 times [2021-11-03 22:51:07,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:51:07,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974698648] [2021-11-03 22:51:07,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:51:07,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:51:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:51:09,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:51:09,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:51:09,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974698648] [2021-11-03 22:51:09,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974698648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:51:09,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:51:09,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 22:51:09,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848398738] [2021-11-03 22:51:09,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:51:09,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 22:51:09,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:51:09,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 22:51:09,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:51:09,098 INFO L87 Difference]: Start difference. First operand 678 states and 762 transitions. Second operand has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 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) [2021-11-03 22:51:11,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:51:37,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:51:37,379 INFO L93 Difference]: Finished difference Result 1936 states and 2142 transitions. [2021-11-03 22:51:37,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-03 22:51:37,379 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 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 [2021-11-03 22:51:37,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:51:37,383 INFO L225 Difference]: With dead ends: 1936 [2021-11-03 22:51:37,383 INFO L226 Difference]: Without dead ends: 1795 [2021-11-03 22:51:37,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 7084.15ms TimeCoverageRelationStatistics Valid=619, Invalid=2461, Unknown=0, NotChecked=0, Total=3080 [2021-11-03 22:51:37,385 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2857 mSDsluCounter, 4729 mSDsCounter, 0 mSdLazyCounter, 7700 mSolverCounterSat, 118 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20504.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2857 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 71.07ms SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 7700 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21841.93ms IncrementalHoareTripleChecker+Time [2021-11-03 22:51:37,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2857 Valid, 0 Invalid, 7819 Unknown, 0 Unchecked, 71.07ms Time], IncrementalHoareTripleChecker [118 Valid, 7700 Invalid, 1 Unknown, 0 Unchecked, 21841.93ms Time] [2021-11-03 22:51:37,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2021-11-03 22:51:37,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 731. [2021-11-03 22:51:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 722 states have (on average 1.1301939058171746) internal successors, (816), 730 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:37,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 816 transitions. [2021-11-03 22:51:37,422 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 816 transitions. Word has length 77 [2021-11-03 22:51:37,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:51:37,423 INFO L470 AbstractCegarLoop]: Abstraction has 731 states and 816 transitions. [2021-11-03 22:51:37,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 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) [2021-11-03 22:51:37,423 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 816 transitions. [2021-11-03 22:51:37,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 22:51:37,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:51:37,424 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] [2021-11-03 22:51:37,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-03 22:51:37,424 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:51:37,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:51:37,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1939395459, now seen corresponding path program 1 times [2021-11-03 22:51:37,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:51:37,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52760547] [2021-11-03 22:51:37,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:51:37,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:51:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:51:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:51:38,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:51:38,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52760547] [2021-11-03 22:51:38,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52760547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:51:38,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:51:38,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:51:38,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241696741] [2021-11-03 22:51:38,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:51:38,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:51:38,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:51:38,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:51:38,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:51:38,405 INFO L87 Difference]: Start difference. First operand 731 states and 816 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 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) [2021-11-03 22:51:40,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:51:53,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:51:53,334 INFO L93 Difference]: Finished difference Result 1196 states and 1308 transitions. [2021-11-03 22:51:53,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 22:51:53,335 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 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 [2021-11-03 22:51:53,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:51:53,337 INFO L225 Difference]: With dead ends: 1196 [2021-11-03 22:51:53,337 INFO L226 Difference]: Without dead ends: 995 [2021-11-03 22:51:53,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2359.10ms TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2021-11-03 22:51:53,338 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 783 mSDsluCounter, 2800 mSDsCounter, 0 mSdLazyCounter, 4484 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12118.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.17ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 4484 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12950.04ms IncrementalHoareTripleChecker+Time [2021-11-03 22:51:53,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 0 Invalid, 4527 Unknown, 0 Unchecked, 29.17ms Time], IncrementalHoareTripleChecker [42 Valid, 4484 Invalid, 1 Unknown, 0 Unchecked, 12950.04ms Time] [2021-11-03 22:51:53,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2021-11-03 22:51:53,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 729. [2021-11-03 22:51:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 720 states have (on average 1.1291666666666667) internal successors, (813), 728 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:53,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 813 transitions. [2021-11-03 22:51:53,374 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 813 transitions. Word has length 77 [2021-11-03 22:51:53,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:51:53,375 INFO L470 AbstractCegarLoop]: Abstraction has 729 states and 813 transitions. [2021-11-03 22:51:53,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 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) [2021-11-03 22:51:53,375 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 813 transitions. [2021-11-03 22:51:53,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 22:51:53,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:51:53,376 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] [2021-11-03 22:51:53,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-03 22:51:53,376 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:51:53,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:51:53,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1194809907, now seen corresponding path program 1 times [2021-11-03 22:51:53,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:51:53,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418899168] [2021-11-03 22:51:53,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:51:53,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:51:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:51:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:51:53,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:51:53,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418899168] [2021-11-03 22:51:53,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418899168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:51:53,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:51:53,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:51:53,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214813840] [2021-11-03 22:51:53,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:51:53,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:51:53,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:51:53,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:51:53,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:51:53,670 INFO L87 Difference]: Start difference. First operand 729 states and 813 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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) [2021-11-03 22:51:55,714 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:51:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:51:58,106 INFO L93 Difference]: Finished difference Result 780 states and 865 transitions. [2021-11-03 22:51:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:51:58,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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 [2021-11-03 22:51:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:51:58,108 INFO L225 Difference]: With dead ends: 780 [2021-11-03 22:51:58,108 INFO L226 Difference]: Without dead ends: 768 [2021-11-03 22:51:58,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 167.08ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:51:58,108 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 251 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3959.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.16ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4307.31ms IncrementalHoareTripleChecker+Time [2021-11-03 22:51:58,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 0 Invalid, 950 Unknown, 0 Unchecked, 5.16ms Time], IncrementalHoareTripleChecker [16 Valid, 933 Invalid, 1 Unknown, 0 Unchecked, 4307.31ms Time] [2021-11-03 22:51:58,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2021-11-03 22:51:58,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 756. [2021-11-03 22:51:58,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 747 states have (on average 1.1298527443105757) internal successors, (844), 755 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:58,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 844 transitions. [2021-11-03 22:51:58,130 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 844 transitions. Word has length 78 [2021-11-03 22:51:58,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:51:58,131 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 844 transitions. [2021-11-03 22:51:58,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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) [2021-11-03 22:51:58,131 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 844 transitions. [2021-11-03 22:51:58,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 22:51:58,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:51:58,132 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] [2021-11-03 22:51:58,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-03 22:51:58,132 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:51:58,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:51:58,132 INFO L85 PathProgramCache]: Analyzing trace with hash -592034527, now seen corresponding path program 1 times [2021-11-03 22:51:58,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:51:58,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826105975] [2021-11-03 22:51:58,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:51:58,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:51:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:51:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:51:59,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:51:59,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826105975] [2021-11-03 22:51:59,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826105975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:51:59,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:51:59,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 22:51:59,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831424365] [2021-11-03 22:51:59,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:51:59,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 22:51:59,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:51:59,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 22:51:59,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:51:59,101 INFO L87 Difference]: Start difference. First operand 756 states and 844 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 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) [2021-11-03 22:52:01,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:52:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:52:16,506 INFO L93 Difference]: Finished difference Result 1377 states and 1520 transitions. [2021-11-03 22:52:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-03 22:52:16,507 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 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 [2021-11-03 22:52:16,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:52:16,509 INFO L225 Difference]: With dead ends: 1377 [2021-11-03 22:52:16,509 INFO L226 Difference]: Without dead ends: 1164 [2021-11-03 22:52:16,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2180.22ms TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2021-11-03 22:52:16,510 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1277 mSDsluCounter, 3236 mSDsCounter, 0 mSdLazyCounter, 5066 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14512.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.01ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 5066 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15472.28ms IncrementalHoareTripleChecker+Time [2021-11-03 22:52:16,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1277 Valid, 0 Invalid, 5109 Unknown, 0 Unchecked, 43.01ms Time], IncrementalHoareTripleChecker [42 Valid, 5066 Invalid, 1 Unknown, 0 Unchecked, 15472.28ms Time] [2021-11-03 22:52:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2021-11-03 22:52:16,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 703. [2021-11-03 22:52:16,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 694 states have (on average 1.1368876080691643) internal successors, (789), 702 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 789 transitions. [2021-11-03 22:52:16,536 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 789 transitions. Word has length 78 [2021-11-03 22:52:16,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:52:16,536 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 789 transitions. [2021-11-03 22:52:16,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 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) [2021-11-03 22:52:16,536 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 789 transitions. [2021-11-03 22:52:16,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 22:52:16,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:52:16,537 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] [2021-11-03 22:52:16,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-03 22:52:16,537 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:52:16,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:52:16,538 INFO L85 PathProgramCache]: Analyzing trace with hash 116390744, now seen corresponding path program 1 times [2021-11-03 22:52:16,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:52:16,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877682633] [2021-11-03 22:52:16,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:52:16,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:52:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:52:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:52:16,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:52:16,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877682633] [2021-11-03 22:52:16,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877682633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:52:16,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:52:16,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:52:16,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001607280] [2021-11-03 22:52:16,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:52:16,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:52:16,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:52:16,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:52:16,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:52:16,931 INFO L87 Difference]: Start difference. First operand 703 states and 789 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 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) [2021-11-03 22:52:18,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:52:24,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:52:24,822 INFO L93 Difference]: Finished difference Result 1134 states and 1281 transitions. [2021-11-03 22:52:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 22:52:24,822 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 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 [2021-11-03 22:52:24,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:52:24,824 INFO L225 Difference]: With dead ends: 1134 [2021-11-03 22:52:24,824 INFO L226 Difference]: Without dead ends: 940 [2021-11-03 22:52:24,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 611.64ms TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:52:24,825 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 524 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6819.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.45ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7362.86ms IncrementalHoareTripleChecker+Time [2021-11-03 22:52:24,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 0 Invalid, 2024 Unknown, 0 Unchecked, 16.45ms Time], IncrementalHoareTripleChecker [29 Valid, 1994 Invalid, 1 Unknown, 0 Unchecked, 7362.86ms Time] [2021-11-03 22:52:24,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-11-03 22:52:24,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 705. [2021-11-03 22:52:24,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 696 states have (on average 1.1379310344827587) internal successors, (792), 704 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 792 transitions. [2021-11-03 22:52:24,872 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 792 transitions. Word has length 79 [2021-11-03 22:52:24,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:52:24,873 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 792 transitions. [2021-11-03 22:52:24,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 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) [2021-11-03 22:52:24,873 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 792 transitions. [2021-11-03 22:52:24,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 22:52:24,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:52:24,889 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] [2021-11-03 22:52:24,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-03 22:52:24,890 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:52:24,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:52:24,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1987620277, now seen corresponding path program 1 times [2021-11-03 22:52:24,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:52:24,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610177906] [2021-11-03 22:52:24,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:52:24,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:52:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:52:25,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:52:25,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:52:25,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610177906] [2021-11-03 22:52:25,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610177906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:52:25,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:52:25,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:52:25,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087630682] [2021-11-03 22:52:25,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:52:25,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:52:25,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:52:25,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:52:25,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:52:25,236 INFO L87 Difference]: Start difference. First operand 705 states and 792 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:27,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:52:30,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:52:30,497 INFO L93 Difference]: Finished difference Result 760 states and 843 transitions. [2021-11-03 22:52:30,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 22:52:30,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 22:52:30,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:52:30,499 INFO L225 Difference]: With dead ends: 760 [2021-11-03 22:52:30,499 INFO L226 Difference]: Without dead ends: 694 [2021-11-03 22:52:30,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 366.75ms TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:52:30,500 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 485 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4568.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.12ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4945.38ms IncrementalHoareTripleChecker+Time [2021-11-03 22:52:30,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 0 Invalid, 1020 Unknown, 0 Unchecked, 5.12ms Time], IncrementalHoareTripleChecker [22 Valid, 997 Invalid, 1 Unknown, 0 Unchecked, 4945.38ms Time] [2021-11-03 22:52:30,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-11-03 22:52:30,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 681. [2021-11-03 22:52:30,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 672 states have (on average 1.1398809523809523) internal successors, (766), 680 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:30,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 766 transitions. [2021-11-03 22:52:30,526 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 766 transitions. Word has length 80 [2021-11-03 22:52:30,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:52:30,526 INFO L470 AbstractCegarLoop]: Abstraction has 681 states and 766 transitions. [2021-11-03 22:52:30,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:30,527 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 766 transitions. [2021-11-03 22:52:30,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 22:52:30,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:52:30,528 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] [2021-11-03 22:52:30,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-03 22:52:30,528 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:52:30,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:52:30,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1448030890, now seen corresponding path program 1 times [2021-11-03 22:52:30,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:52:30,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482944608] [2021-11-03 22:52:30,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:52:30,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:52:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:52:32,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:52:32,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:52:32,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482944608] [2021-11-03 22:52:32,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482944608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:52:32,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:52:32,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 22:52:32,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962932678] [2021-11-03 22:52:32,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:52:32,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 22:52:32,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:52:32,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 22:52:32,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-03 22:52:32,027 INFO L87 Difference]: Start difference. First operand 681 states and 766 transitions. Second operand has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:34,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:52:45,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:52:45,635 INFO L93 Difference]: Finished difference Result 1352 states and 1529 transitions. [2021-11-03 22:52:45,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 22:52:45,636 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 22:52:45,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:52:45,639 INFO L225 Difference]: With dead ends: 1352 [2021-11-03 22:52:45,639 INFO L226 Difference]: Without dead ends: 1194 [2021-11-03 22:52:45,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1944.40ms TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2021-11-03 22:52:45,639 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1179 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 3579 mSolverCounterSat, 63 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11434.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.63ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3579 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12243.86ms IncrementalHoareTripleChecker+Time [2021-11-03 22:52:45,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 0 Invalid, 3643 Unknown, 0 Unchecked, 34.63ms Time], IncrementalHoareTripleChecker [63 Valid, 3579 Invalid, 1 Unknown, 0 Unchecked, 12243.86ms Time] [2021-11-03 22:52:45,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-11-03 22:52:45,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 734. [2021-11-03 22:52:45,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 725 states have (on average 1.1310344827586207) internal successors, (820), 733 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:45,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 820 transitions. [2021-11-03 22:52:45,666 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 820 transitions. Word has length 80 [2021-11-03 22:52:45,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:52:45,666 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 820 transitions. [2021-11-03 22:52:45,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:45,666 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 820 transitions. [2021-11-03 22:52:45,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 22:52:45,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:52:45,667 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] [2021-11-03 22:52:45,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-03 22:52:45,668 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:52:45,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:52:45,668 INFO L85 PathProgramCache]: Analyzing trace with hash -106540190, now seen corresponding path program 1 times [2021-11-03 22:52:45,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:52:45,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701917728] [2021-11-03 22:52:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:52:45,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:52:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:52:50,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:52:50,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:52:50,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701917728] [2021-11-03 22:52:50,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701917728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:52:50,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:52:50,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-03 22:52:50,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143741048] [2021-11-03 22:52:50,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:52:50,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 22:52:50,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:52:50,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 22:52:50,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:52:50,814 INFO L87 Difference]: Start difference. First operand 734 states and 820 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 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) [2021-11-03 22:52:53,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:53:07,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:53:07,184 INFO L93 Difference]: Finished difference Result 1015 states and 1134 transitions. [2021-11-03 22:53:07,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 22:53:07,187 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 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 [2021-11-03 22:53:07,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:53:07,190 INFO L225 Difference]: With dead ends: 1015 [2021-11-03 22:53:07,190 INFO L226 Difference]: Without dead ends: 916 [2021-11-03 22:53:07,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 3578.12ms TimeCoverageRelationStatistics Valid=339, Invalid=993, Unknown=0, NotChecked=0, Total=1332 [2021-11-03 22:53:07,190 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1701 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 3850 mSolverCounterSat, 99 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12787.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.23ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3850 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13657.10ms IncrementalHoareTripleChecker+Time [2021-11-03 22:53:07,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1701 Valid, 0 Invalid, 3950 Unknown, 0 Unchecked, 37.23ms Time], IncrementalHoareTripleChecker [99 Valid, 3850 Invalid, 1 Unknown, 0 Unchecked, 13657.10ms Time] [2021-11-03 22:53:07,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-11-03 22:53:07,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 846. [2021-11-03 22:53:07,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 837 states have (on average 1.1397849462365592) internal successors, (954), 845 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:07,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 954 transitions. [2021-11-03 22:53:07,227 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 954 transitions. Word has length 81 [2021-11-03 22:53:07,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:53:07,228 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 954 transitions. [2021-11-03 22:53:07,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 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) [2021-11-03 22:53:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 954 transitions. [2021-11-03 22:53:07,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 22:53:07,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:53:07,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:53:07,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-03 22:53:07,229 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:53:07,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:53:07,230 INFO L85 PathProgramCache]: Analyzing trace with hash 573518180, now seen corresponding path program 1 times [2021-11-03 22:53:07,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:53:07,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454247647] [2021-11-03 22:53:07,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:53:07,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:53:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:53:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:53:07,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:53:07,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454247647] [2021-11-03 22:53:07,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454247647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:53:07,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:53:07,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:53:07,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995076115] [2021-11-03 22:53:07,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:53:07,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:53:07,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:53:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:53:07,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:53:07,596 INFO L87 Difference]: Start difference. First operand 846 states and 954 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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) [2021-11-03 22:53:10,123 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:53:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:53:13,962 INFO L93 Difference]: Finished difference Result 1109 states and 1261 transitions. [2021-11-03 22:53:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 22:53:13,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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 [2021-11-03 22:53:13,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:53:13,964 INFO L225 Difference]: With dead ends: 1109 [2021-11-03 22:53:13,964 INFO L226 Difference]: Without dead ends: 850 [2021-11-03 22:53:13,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 178.02ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:53:13,965 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 206 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5725.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.64ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6248.91ms IncrementalHoareTripleChecker+Time [2021-11-03 22:53:13,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 0 Invalid, 1323 Unknown, 0 Unchecked, 9.64ms Time], IncrementalHoareTripleChecker [12 Valid, 1310 Invalid, 1 Unknown, 0 Unchecked, 6248.91ms Time] [2021-11-03 22:53:13,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2021-11-03 22:53:13,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 838. [2021-11-03 22:53:13,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 829 states have (on average 1.1363088057901085) internal successors, (942), 837 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) [2021-11-03 22:53:13,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 942 transitions. [2021-11-03 22:53:13,997 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 942 transitions. Word has length 81 [2021-11-03 22:53:13,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:53:13,997 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 942 transitions. [2021-11-03 22:53:13,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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) [2021-11-03 22:53:13,997 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 942 transitions. [2021-11-03 22:53:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 22:53:13,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:53:13,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:53:13,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-03 22:53:13,998 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:53:13,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:53:13,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1253120851, now seen corresponding path program 1 times [2021-11-03 22:53:13,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:53:13,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446594297] [2021-11-03 22:53:13,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:53:13,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:53:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:53:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:53:14,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:53:14,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446594297] [2021-11-03 22:53:14,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446594297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:53:14,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:53:14,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 22:53:14,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057020708] [2021-11-03 22:53:14,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:53:14,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 22:53:14,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:53:14,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 22:53:14,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:53:14,791 INFO L87 Difference]: Start difference. First operand 838 states and 942 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:17,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:53:27,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:53:27,579 INFO L93 Difference]: Finished difference Result 1318 states and 1477 transitions. [2021-11-03 22:53:27,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-03 22:53:27,580 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 22:53:27,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:53:27,582 INFO L225 Difference]: With dead ends: 1318 [2021-11-03 22:53:27,582 INFO L226 Difference]: Without dead ends: 1126 [2021-11-03 22:53:27,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1873.89ms TimeCoverageRelationStatistics Valid=278, Invalid=778, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 22:53:27,583 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1020 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 3096 mSolverCounterSat, 66 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10390.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.18ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3096 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11162.97ms IncrementalHoareTripleChecker+Time [2021-11-03 22:53:27,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 0 Invalid, 3163 Unknown, 0 Unchecked, 27.18ms Time], IncrementalHoareTripleChecker [66 Valid, 3096 Invalid, 1 Unknown, 0 Unchecked, 11162.97ms Time] [2021-11-03 22:53:27,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2021-11-03 22:53:27,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 844. [2021-11-03 22:53:27,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 835 states have (on average 1.1353293413173653) internal successors, (948), 843 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 948 transitions. [2021-11-03 22:53:27,617 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 948 transitions. Word has length 82 [2021-11-03 22:53:27,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:53:27,618 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 948 transitions. [2021-11-03 22:53:27,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 948 transitions. [2021-11-03 22:53:27,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 22:53:27,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:53:27,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:53:27,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-03 22:53:27,619 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:53:27,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:53:27,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1933735067, now seen corresponding path program 1 times [2021-11-03 22:53:27,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:53:27,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963120042] [2021-11-03 22:53:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:53:27,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:53:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:53:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:53:28,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:53:28,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963120042] [2021-11-03 22:53:28,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963120042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:53:28,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:53:28,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:53:28,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139603508] [2021-11-03 22:53:28,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:53:28,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:53:28,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:53:28,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:53:28,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:53:28,116 INFO L87 Difference]: Start difference. First operand 844 states and 948 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:30,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:53:38,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:53:38,455 INFO L93 Difference]: Finished difference Result 1809 states and 2065 transitions. [2021-11-03 22:53:38,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-03 22:53:38,455 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 22:53:38,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:53:38,458 INFO L225 Difference]: With dead ends: 1809 [2021-11-03 22:53:38,458 INFO L226 Difference]: Without dead ends: 1633 [2021-11-03 22:53:38,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1620.48ms TimeCoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 22:53:38,459 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 911 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8115.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.65ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8789.01ms IncrementalHoareTripleChecker+Time [2021-11-03 22:53:38,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 0 Invalid, 2217 Unknown, 0 Unchecked, 20.65ms Time], IncrementalHoareTripleChecker [37 Valid, 2179 Invalid, 1 Unknown, 0 Unchecked, 8789.01ms Time] [2021-11-03 22:53:38,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2021-11-03 22:53:38,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 788. [2021-11-03 22:53:38,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 779 states have (on average 1.1322207958921695) internal successors, (882), 787 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:38,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 882 transitions. [2021-11-03 22:53:38,504 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 882 transitions. Word has length 82 [2021-11-03 22:53:38,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:53:38,504 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 882 transitions. [2021-11-03 22:53:38,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:38,504 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 882 transitions. [2021-11-03 22:53:38,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 22:53:38,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:53:38,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:53:38,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-03 22:53:38,505 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:53:38,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:53:38,509 INFO L85 PathProgramCache]: Analyzing trace with hash 62704963, now seen corresponding path program 1 times [2021-11-03 22:53:38,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:53:38,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305943755] [2021-11-03 22:53:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:53:38,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:53:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:53:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:53:40,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:53:40,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305943755] [2021-11-03 22:53:40,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305943755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:53:40,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:53:40,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 22:53:40,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135970658] [2021-11-03 22:53:40,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:53:40,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 22:53:40,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:53:40,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 22:53:40,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:53:40,756 INFO L87 Difference]: Start difference. First operand 788 states and 882 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:43,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:53:54,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:53:54,470 INFO L93 Difference]: Finished difference Result 1188 states and 1299 transitions. [2021-11-03 22:53:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 22:53:54,470 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 22:53:54,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:53:54,482 INFO L225 Difference]: With dead ends: 1188 [2021-11-03 22:53:54,483 INFO L226 Difference]: Without dead ends: 973 [2021-11-03 22:53:54,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1230.80ms TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2021-11-03 22:53:54,484 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 955 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 3831 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11979.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.30ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3831 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12803.75ms IncrementalHoareTripleChecker+Time [2021-11-03 22:53:54,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [955 Valid, 0 Invalid, 3859 Unknown, 0 Unchecked, 35.30ms Time], IncrementalHoareTripleChecker [27 Valid, 3831 Invalid, 1 Unknown, 0 Unchecked, 12803.75ms Time] [2021-11-03 22:53:54,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2021-11-03 22:53:54,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 747. [2021-11-03 22:53:54,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 738 states have (on average 1.1260162601626016) internal successors, (831), 746 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:54,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 831 transitions. [2021-11-03 22:53:54,536 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 831 transitions. Word has length 82 [2021-11-03 22:53:54,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:53:54,536 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 831 transitions. [2021-11-03 22:53:54,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:54,536 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 831 transitions. [2021-11-03 22:53:54,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 22:53:54,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:53:54,537 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] [2021-11-03 22:53:54,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-03 22:53:54,537 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:53:54,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:53:54,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1001840699, now seen corresponding path program 1 times [2021-11-03 22:53:54,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:53:54,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693625229] [2021-11-03 22:53:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:53:54,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:53:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:53:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:53:55,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:53:55,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693625229] [2021-11-03 22:53:55,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693625229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:53:55,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:53:55,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 22:53:55,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559728344] [2021-11-03 22:53:55,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:53:55,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 22:53:55,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:53:55,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 22:53:55,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:53:55,232 INFO L87 Difference]: Start difference. First operand 747 states and 831 transitions. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 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) [2021-11-03 22:53:57,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:54:05,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:54:05,905 INFO L93 Difference]: Finished difference Result 1110 states and 1244 transitions. [2021-11-03 22:54:05,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 22:54:05,905 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 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 [2021-11-03 22:54:05,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:54:05,907 INFO L225 Difference]: With dead ends: 1110 [2021-11-03 22:54:05,908 INFO L226 Difference]: Without dead ends: 1102 [2021-11-03 22:54:05,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1433.48ms TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2021-11-03 22:54:05,908 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 410 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 2681 mSolverCounterSat, 216 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8796.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.27ms SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 2681 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9409.26ms IncrementalHoareTripleChecker+Time [2021-11-03 22:54:05,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 0 Invalid, 2898 Unknown, 0 Unchecked, 21.27ms Time], IncrementalHoareTripleChecker [216 Valid, 2681 Invalid, 1 Unknown, 0 Unchecked, 9409.26ms Time] [2021-11-03 22:54:05,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-11-03 22:54:05,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 779. [2021-11-03 22:54:05,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 770 states have (on average 1.1194805194805195) internal successors, (862), 778 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:05,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 862 transitions. [2021-11-03 22:54:05,951 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 862 transitions. Word has length 83 [2021-11-03 22:54:05,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:54:05,951 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 862 transitions. [2021-11-03 22:54:05,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 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) [2021-11-03 22:54:05,952 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 862 transitions. [2021-11-03 22:54:05,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 22:54:05,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:54:05,953 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] [2021-11-03 22:54:05,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-03 22:54:05,953 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:54:05,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:54:05,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1195031587, now seen corresponding path program 1 times [2021-11-03 22:54:05,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:54:05,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804955379] [2021-11-03 22:54:05,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:54:05,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:06,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:06,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:06,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804955379] [2021-11-03 22:54:06,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804955379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:06,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:06,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:54:06,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155575219] [2021-11-03 22:54:06,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:06,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:54:06,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:06,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:54:06,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:54:06,424 INFO L87 Difference]: Start difference. First operand 779 states and 862 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 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) [2021-11-03 22:54:08,923 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:54:15,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:54:15,142 INFO L93 Difference]: Finished difference Result 1122 states and 1243 transitions. [2021-11-03 22:54:15,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 22:54:15,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 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 [2021-11-03 22:54:15,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:54:15,144 INFO L225 Difference]: With dead ends: 1122 [2021-11-03 22:54:15,144 INFO L226 Difference]: Without dead ends: 1078 [2021-11-03 22:54:15,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 930.75ms TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2021-11-03 22:54:15,145 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 557 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7278.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.24ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7875.87ms IncrementalHoareTripleChecker+Time [2021-11-03 22:54:15,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 0 Invalid, 1961 Unknown, 0 Unchecked, 17.24ms Time], IncrementalHoareTripleChecker [27 Valid, 1933 Invalid, 1 Unknown, 0 Unchecked, 7875.87ms Time] [2021-11-03 22:54:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-11-03 22:54:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 740. [2021-11-03 22:54:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 731 states have (on average 1.121751025991792) internal successors, (820), 739 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:15,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 820 transitions. [2021-11-03 22:54:15,179 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 820 transitions. Word has length 83 [2021-11-03 22:54:15,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:54:15,179 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 820 transitions. [2021-11-03 22:54:15,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 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) [2021-11-03 22:54:15,180 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 820 transitions. [2021-11-03 22:54:15,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:54:15,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:54:15,180 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] [2021-11-03 22:54:15,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-03 22:54:15,181 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:54:15,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:54:15,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1547107831, now seen corresponding path program 1 times [2021-11-03 22:54:15,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:54:15,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580325268] [2021-11-03 22:54:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:54:15,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:15,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:15,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580325268] [2021-11-03 22:54:15,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580325268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:15,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:15,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 22:54:15,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509269658] [2021-11-03 22:54:15,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:15,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 22:54:15,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:15,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 22:54:15,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:54:15,692 INFO L87 Difference]: Start difference. First operand 740 states and 820 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 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) [2021-11-03 22:54:17,733 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:54:23,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:54:23,918 INFO L93 Difference]: Finished difference Result 1118 states and 1211 transitions. [2021-11-03 22:54:23,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 22:54:23,918 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 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 [2021-11-03 22:54:23,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:54:23,919 INFO L225 Difference]: With dead ends: 1118 [2021-11-03 22:54:23,919 INFO L226 Difference]: Without dead ends: 969 [2021-11-03 22:54:23,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1095.10ms TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2021-11-03 22:54:23,920 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1334 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 67 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6711.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.05ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7250.57ms IncrementalHoareTripleChecker+Time [2021-11-03 22:54:23,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1334 Valid, 0 Invalid, 1969 Unknown, 0 Unchecked, 18.05ms Time], IncrementalHoareTripleChecker [67 Valid, 1901 Invalid, 1 Unknown, 0 Unchecked, 7250.57ms Time] [2021-11-03 22:54:23,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2021-11-03 22:54:23,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 708. [2021-11-03 22:54:23,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 699 states have (on average 1.1244635193133048) internal successors, (786), 707 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:23,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 786 transitions. [2021-11-03 22:54:23,954 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 786 transitions. Word has length 85 [2021-11-03 22:54:23,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:54:23,954 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 786 transitions. [2021-11-03 22:54:23,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 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) [2021-11-03 22:54:23,954 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 786 transitions. [2021-11-03 22:54:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:54:23,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:54:23,955 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] [2021-11-03 22:54:23,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-03 22:54:23,955 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:54:23,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:54:23,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1516959556, now seen corresponding path program 1 times [2021-11-03 22:54:23,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:54:23,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329825160] [2021-11-03 22:54:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:54:23,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:27,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:27,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329825160] [2021-11-03 22:54:27,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329825160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:27,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:27,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-03 22:54:27,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776467703] [2021-11-03 22:54:27,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:27,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 22:54:27,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:27,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 22:54:27,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:54:27,488 INFO L87 Difference]: Start difference. First operand 708 states and 786 transitions. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 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) [2021-11-03 22:54:30,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:54:44,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:54:44,656 INFO L93 Difference]: Finished difference Result 1256 states and 1380 transitions. [2021-11-03 22:54:44,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-03 22:54:44,657 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 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 [2021-11-03 22:54:44,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:54:44,658 INFO L225 Difference]: With dead ends: 1256 [2021-11-03 22:54:44,658 INFO L226 Difference]: Without dead ends: 1087 [2021-11-03 22:54:44,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 3821.15ms TimeCoverageRelationStatistics Valid=451, Invalid=1711, Unknown=0, NotChecked=0, Total=2162 [2021-11-03 22:54:44,659 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2293 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 4318 mSolverCounterSat, 125 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13091.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.90ms SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 4318 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13990.47ms IncrementalHoareTripleChecker+Time [2021-11-03 22:54:44,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2293 Valid, 0 Invalid, 4444 Unknown, 0 Unchecked, 41.90ms Time], IncrementalHoareTripleChecker [125 Valid, 4318 Invalid, 1 Unknown, 0 Unchecked, 13990.47ms Time] [2021-11-03 22:54:44,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2021-11-03 22:54:44,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 791. [2021-11-03 22:54:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 782 states have (on average 1.1240409207161126) internal successors, (879), 790 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:44,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 879 transitions. [2021-11-03 22:54:44,697 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 879 transitions. Word has length 85 [2021-11-03 22:54:44,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:54:44,697 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 879 transitions. [2021-11-03 22:54:44,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 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) [2021-11-03 22:54:44,698 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 879 transitions. [2021-11-03 22:54:44,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 22:54:44,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:54:44,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:54:44,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-03 22:54:44,699 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:54:44,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:54:44,701 INFO L85 PathProgramCache]: Analyzing trace with hash 434207952, now seen corresponding path program 1 times [2021-11-03 22:54:44,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:54:44,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73154822] [2021-11-03 22:54:44,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:54:44,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:46,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:46,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73154822] [2021-11-03 22:54:46,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73154822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:46,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:46,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:54:46,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271446337] [2021-11-03 22:54:46,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:46,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:54:46,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:46,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:54:46,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:54:46,566 INFO L87 Difference]: Start difference. First operand 791 states and 879 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:48,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:54:53,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:54:53,757 INFO L93 Difference]: Finished difference Result 1281 states and 1406 transitions. [2021-11-03 22:54:53,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:54:53,757 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-03 22:54:53,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:54:53,759 INFO L225 Difference]: With dead ends: 1281 [2021-11-03 22:54:53,759 INFO L226 Difference]: Without dead ends: 918 [2021-11-03 22:54:53,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 518.79ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:54:53,760 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 711 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6309.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.87ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6830.65ms IncrementalHoareTripleChecker+Time [2021-11-03 22:54:53,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 0 Invalid, 1700 Unknown, 0 Unchecked, 14.87ms Time], IncrementalHoareTripleChecker [7 Valid, 1692 Invalid, 1 Unknown, 0 Unchecked, 6830.65ms Time] [2021-11-03 22:54:53,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-11-03 22:54:53,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 799. [2021-11-03 22:54:53,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 790 states have (on average 1.1227848101265823) internal successors, (887), 798 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 887 transitions. [2021-11-03 22:54:53,797 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 887 transitions. Word has length 86 [2021-11-03 22:54:53,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:54:53,798 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 887 transitions. [2021-11-03 22:54:53,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:53,798 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 887 transitions. [2021-11-03 22:54:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 22:54:53,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:54:53,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:54:53,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-03 22:54:53,799 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:54:53,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:54:53,799 INFO L85 PathProgramCache]: Analyzing trace with hash -529928246, now seen corresponding path program 1 times [2021-11-03 22:54:53,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:54:53,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032528675] [2021-11-03 22:54:53,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:54:53,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:54,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:54,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032528675] [2021-11-03 22:54:54,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032528675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:54,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:54,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:54:54,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544898855] [2021-11-03 22:54:54,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:54,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:54:54,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:54,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:54:54,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:54:54,211 INFO L87 Difference]: Start difference. First operand 799 states and 887 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:56,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:55:02,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:55:02,649 INFO L93 Difference]: Finished difference Result 1865 states and 2105 transitions. [2021-11-03 22:55:02,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-03 22:55:02,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-03 22:55:02,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:55:02,652 INFO L225 Difference]: With dead ends: 1865 [2021-11-03 22:55:02,652 INFO L226 Difference]: Without dead ends: 1791 [2021-11-03 22:55:02,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1065.98ms TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2021-11-03 22:55:02,653 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1182 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6785.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.48ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7379.66ms IncrementalHoareTripleChecker+Time [2021-11-03 22:55:02,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 0 Invalid, 1739 Unknown, 0 Unchecked, 13.48ms Time], IncrementalHoareTripleChecker [46 Valid, 1692 Invalid, 1 Unknown, 0 Unchecked, 7379.66ms Time] [2021-11-03 22:55:02,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-11-03 22:55:02,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 799. [2021-11-03 22:55:02,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 790 states have (on average 1.1215189873417721) internal successors, (886), 798 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:02,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 886 transitions. [2021-11-03 22:55:02,694 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 886 transitions. Word has length 86 [2021-11-03 22:55:02,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:55:02,694 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 886 transitions. [2021-11-03 22:55:02,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:02,695 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 886 transitions. [2021-11-03 22:55:02,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 22:55:02,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:55:02,695 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] [2021-11-03 22:55:02,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-03 22:55:02,696 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:55:02,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:55:02,696 INFO L85 PathProgramCache]: Analyzing trace with hash -2071448370, now seen corresponding path program 1 times [2021-11-03 22:55:02,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:55:02,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12002567] [2021-11-03 22:55:02,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:55:02,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:55:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:55:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:55:03,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:55:03,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12002567] [2021-11-03 22:55:03,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12002567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:55:03,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:55:03,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:55:03,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150691539] [2021-11-03 22:55:03,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:55:03,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:55:03,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:55:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:55:03,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:55:03,373 INFO L87 Difference]: Start difference. First operand 799 states and 886 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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) [2021-11-03 22:55:05,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:55:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:55:10,850 INFO L93 Difference]: Finished difference Result 897 states and 986 transitions. [2021-11-03 22:55:10,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 22:55:10,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 [2021-11-03 22:55:10,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:55:10,852 INFO L225 Difference]: With dead ends: 897 [2021-11-03 22:55:10,852 INFO L226 Difference]: Without dead ends: 895 [2021-11-03 22:55:10,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1039.96ms TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2021-11-03 22:55:10,853 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 684 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6077.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.80ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6630.32ms IncrementalHoareTripleChecker+Time [2021-11-03 22:55:10,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 0 Invalid, 1400 Unknown, 0 Unchecked, 12.80ms Time], IncrementalHoareTripleChecker [46 Valid, 1353 Invalid, 1 Unknown, 0 Unchecked, 6630.32ms Time] [2021-11-03 22:55:10,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-11-03 22:55:10,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 830. [2021-11-03 22:55:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 821 states have (on average 1.123020706455542) internal successors, (922), 829 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:10,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 922 transitions. [2021-11-03 22:55:10,918 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 922 transitions. Word has length 87 [2021-11-03 22:55:10,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:55:10,918 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 922 transitions. [2021-11-03 22:55:10,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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) [2021-11-03 22:55:10,918 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 922 transitions. [2021-11-03 22:55:10,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 22:55:10,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:55:10,920 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] [2021-11-03 22:55:10,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-03 22:55:10,920 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:55:10,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:55:10,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1900386303, now seen corresponding path program 1 times [2021-11-03 22:55:10,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:55:10,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786251215] [2021-11-03 22:55:10,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:55:10,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:55:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:55:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:55:11,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:55:11,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786251215] [2021-11-03 22:55:11,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786251215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:55:11,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:55:11,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:55:11,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141167133] [2021-11-03 22:55:11,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:55:11,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:55:11,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:55:11,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:55:11,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:55:11,199 INFO L87 Difference]: Start difference. First operand 830 states and 922 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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) [2021-11-03 22:55:13,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:55:16,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:55:16,659 INFO L93 Difference]: Finished difference Result 1123 states and 1245 transitions. [2021-11-03 22:55:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 22:55:16,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 [2021-11-03 22:55:16,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:55:16,661 INFO L225 Difference]: With dead ends: 1123 [2021-11-03 22:55:16,661 INFO L226 Difference]: Without dead ends: 974 [2021-11-03 22:55:16,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 297.95ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:55:16,661 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 374 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4806.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.96ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5182.71ms IncrementalHoareTripleChecker+Time [2021-11-03 22:55:16,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 0 Invalid, 1117 Unknown, 0 Unchecked, 8.96ms Time], IncrementalHoareTripleChecker [30 Valid, 1086 Invalid, 1 Unknown, 0 Unchecked, 5182.71ms Time] [2021-11-03 22:55:16,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2021-11-03 22:55:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 843. [2021-11-03 22:55:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 834 states have (on average 1.118705035971223) internal successors, (933), 842 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 933 transitions. [2021-11-03 22:55:16,713 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 933 transitions. Word has length 87 [2021-11-03 22:55:16,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:55:16,713 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 933 transitions. [2021-11-03 22:55:16,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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) [2021-11-03 22:55:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 933 transitions. [2021-11-03 22:55:16,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 22:55:16,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:55:16,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:55:16,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-03 22:55:16,715 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:55:16,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:55:16,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1912145800, now seen corresponding path program 1 times [2021-11-03 22:55:16,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:55:16,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856348866] [2021-11-03 22:55:16,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:55:16,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:55:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:55:16,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:55:16,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:55:16,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856348866] [2021-11-03 22:55:16,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856348866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:55:16,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:55:16,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:55:16,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142009484] [2021-11-03 22:55:16,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:55:16,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:55:16,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:55:16,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:55:16,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:55:16,957 INFO L87 Difference]: Start difference. First operand 843 states and 933 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:19,001 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:55:22,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:55:22,568 INFO L93 Difference]: Finished difference Result 1431 states and 1609 transitions. [2021-11-03 22:55:22,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:55:22,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-03 22:55:22,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:55:22,571 INFO L225 Difference]: With dead ends: 1431 [2021-11-03 22:55:22,571 INFO L226 Difference]: Without dead ends: 1102 [2021-11-03 22:55:22,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 237.68ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:55:22,572 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 294 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4959.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.50ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5360.05ms IncrementalHoareTripleChecker+Time [2021-11-03 22:55:22,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 0 Invalid, 1156 Unknown, 0 Unchecked, 8.50ms Time], IncrementalHoareTripleChecker [8 Valid, 1147 Invalid, 1 Unknown, 0 Unchecked, 5360.05ms Time] [2021-11-03 22:55:22,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-11-03 22:55:22,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 855. [2021-11-03 22:55:22,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 846 states have (on average 1.1146572104018913) internal successors, (943), 854 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:22,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 943 transitions. [2021-11-03 22:55:22,618 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 943 transitions. Word has length 88 [2021-11-03 22:55:22,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:55:22,618 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 943 transitions. [2021-11-03 22:55:22,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 943 transitions. [2021-11-03 22:55:22,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-03 22:55:22,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:55:22,619 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] [2021-11-03 22:55:22,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-03 22:55:22,619 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:55:22,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:55:22,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1810270269, now seen corresponding path program 1 times [2021-11-03 22:55:22,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:55:22,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141834766] [2021-11-03 22:55:22,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:55:22,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:55:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:55:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:55:25,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:55:25,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141834766] [2021-11-03 22:55:25,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141834766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:55:25,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:55:25,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 22:55:25,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427232157] [2021-11-03 22:55:25,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:55:25,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 22:55:25,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:55:25,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 22:55:25,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:55:25,782 INFO L87 Difference]: Start difference. First operand 855 states and 943 transitions. Second operand has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 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) [2021-11-03 22:55:27,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:55:40,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:55:40,157 INFO L93 Difference]: Finished difference Result 1120 states and 1212 transitions. [2021-11-03 22:55:40,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 22:55:40,157 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 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 [2021-11-03 22:55:40,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:55:40,158 INFO L225 Difference]: With dead ends: 1120 [2021-11-03 22:55:40,159 INFO L226 Difference]: Without dead ends: 1021 [2021-11-03 22:55:40,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2350.01ms TimeCoverageRelationStatistics Valid=219, Invalid=773, Unknown=0, NotChecked=0, Total=992 [2021-11-03 22:55:40,159 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 958 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 3954 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11927.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.21ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12674.76ms IncrementalHoareTripleChecker+Time [2021-11-03 22:55:40,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [958 Valid, 0 Invalid, 3988 Unknown, 0 Unchecked, 35.21ms Time], IncrementalHoareTripleChecker [33 Valid, 3954 Invalid, 1 Unknown, 0 Unchecked, 12674.76ms Time] [2021-11-03 22:55:40,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2021-11-03 22:55:40,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 852. [2021-11-03 22:55:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 843 states have (on average 1.113879003558719) internal successors, (939), 851 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 939 transitions. [2021-11-03 22:55:40,203 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 939 transitions. Word has length 89 [2021-11-03 22:55:40,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:55:40,203 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 939 transitions. [2021-11-03 22:55:40,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 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) [2021-11-03 22:55:40,203 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 939 transitions. [2021-11-03 22:55:40,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 22:55:40,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:55:40,204 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] [2021-11-03 22:55:40,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-03 22:55:40,204 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:55:40,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:55:40,205 INFO L85 PathProgramCache]: Analyzing trace with hash -573045769, now seen corresponding path program 1 times [2021-11-03 22:55:40,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:55:40,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651017705] [2021-11-03 22:55:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:55:40,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:55:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:55:41,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:55:41,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:55:41,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651017705] [2021-11-03 22:55:41,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651017705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:55:41,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:55:41,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 22:55:41,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672649919] [2021-11-03 22:55:41,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:55:41,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 22:55:41,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:55:41,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 22:55:41,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:55:41,389 INFO L87 Difference]: Start difference. First operand 852 states and 939 transitions. Second operand has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:43,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:55:55,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:55:55,717 INFO L93 Difference]: Finished difference Result 1299 states and 1397 transitions. [2021-11-03 22:55:55,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-03 22:55:55,718 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-03 22:55:55,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:55:55,719 INFO L225 Difference]: With dead ends: 1299 [2021-11-03 22:55:55,719 INFO L226 Difference]: Without dead ends: 1147 [2021-11-03 22:55:55,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2310.95ms TimeCoverageRelationStatistics Valid=358, Invalid=1048, Unknown=0, NotChecked=0, Total=1406 [2021-11-03 22:55:55,720 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1126 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 3535 mSolverCounterSat, 83 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11508.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.29ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 3535 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12346.76ms IncrementalHoareTripleChecker+Time [2021-11-03 22:55:55,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1126 Valid, 0 Invalid, 3619 Unknown, 0 Unchecked, 35.29ms Time], IncrementalHoareTripleChecker [83 Valid, 3535 Invalid, 1 Unknown, 0 Unchecked, 12346.76ms Time] [2021-11-03 22:55:55,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2021-11-03 22:55:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 860. [2021-11-03 22:55:55,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 851 states have (on average 1.1128084606345476) internal successors, (947), 859 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 947 transitions. [2021-11-03 22:55:55,786 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 947 transitions. Word has length 91 [2021-11-03 22:55:55,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:55:55,787 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 947 transitions. [2021-11-03 22:55:55,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:55,787 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 947 transitions. [2021-11-03 22:55:55,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 22:55:55,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:55:55,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:55:55,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-03 22:55:55,788 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:55:55,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:55:55,789 INFO L85 PathProgramCache]: Analyzing trace with hash 565360802, now seen corresponding path program 1 times [2021-11-03 22:55:55,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:55:55,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394931388] [2021-11-03 22:55:55,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:55:55,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:55:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:56:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:56:00,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:56:00,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394931388] [2021-11-03 22:56:00,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394931388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:56:00,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:56:00,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-03 22:56:00,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756819701] [2021-11-03 22:56:00,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:56:00,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 22:56:00,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:56:00,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 22:56:00,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:56:00,493 INFO L87 Difference]: Start difference. First operand 860 states and 947 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 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) [2021-11-03 22:56:03,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:56:19,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:56:19,996 INFO L93 Difference]: Finished difference Result 1722 states and 1899 transitions. [2021-11-03 22:56:19,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-03 22:56:19,997 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 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 [2021-11-03 22:56:19,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:56:19,999 INFO L225 Difference]: With dead ends: 1722 [2021-11-03 22:56:19,999 INFO L226 Difference]: Without dead ends: 1509 [2021-11-03 22:56:19,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 3222.17ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-11-03 22:56:20,000 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1445 mSDsluCounter, 3549 mSDsCounter, 0 mSdLazyCounter, 5817 mSolverCounterSat, 57 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15744.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.92ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 5817 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16801.16ms IncrementalHoareTripleChecker+Time [2021-11-03 22:56:20,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1445 Valid, 0 Invalid, 5875 Unknown, 0 Unchecked, 48.92ms Time], IncrementalHoareTripleChecker [57 Valid, 5817 Invalid, 1 Unknown, 0 Unchecked, 16801.16ms Time] [2021-11-03 22:56:20,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-11-03 22:56:20,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 860. [2021-11-03 22:56:20,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 851 states have (on average 1.1069330199764982) internal successors, (942), 859 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) [2021-11-03 22:56:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 942 transitions. [2021-11-03 22:56:20,048 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 942 transitions. Word has length 92 [2021-11-03 22:56:20,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:56:20,049 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 942 transitions. [2021-11-03 22:56:20,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 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) [2021-11-03 22:56:20,049 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 942 transitions. [2021-11-03 22:56:20,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 22:56:20,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:56:20,050 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] [2021-11-03 22:56:20,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-03 22:56:20,050 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:56:20,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:56:20,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1245419172, now seen corresponding path program 1 times [2021-11-03 22:56:20,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:56:20,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586214420] [2021-11-03 22:56:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:56:20,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:56:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:56:20,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:56:20,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:56:20,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586214420] [2021-11-03 22:56:20,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586214420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:56:20,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:56:20,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:56:20,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326479312] [2021-11-03 22:56:20,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:56:20,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:56:20,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:56:20,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:56:20,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:56:20,495 INFO L87 Difference]: Start difference. First operand 860 states and 942 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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) [2021-11-03 22:56:23,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:56:27,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:56:27,416 INFO L93 Difference]: Finished difference Result 1229 states and 1365 transitions. [2021-11-03 22:56:27,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:56:27,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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 [2021-11-03 22:56:27,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:56:27,418 INFO L225 Difference]: With dead ends: 1229 [2021-11-03 22:56:27,418 INFO L226 Difference]: Without dead ends: 959 [2021-11-03 22:56:27,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 355.30ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:56:27,419 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 226 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6091.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.47ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6646.48ms IncrementalHoareTripleChecker+Time [2021-11-03 22:56:27,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 0 Invalid, 1586 Unknown, 0 Unchecked, 8.47ms Time], IncrementalHoareTripleChecker [10 Valid, 1575 Invalid, 1 Unknown, 0 Unchecked, 6646.48ms Time] [2021-11-03 22:56:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-11-03 22:56:27,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 823. [2021-11-03 22:56:27,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 814 states have (on average 1.0982800982800982) internal successors, (894), 822 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:27,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 894 transitions. [2021-11-03 22:56:27,464 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 894 transitions. Word has length 92 [2021-11-03 22:56:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:56:27,465 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 894 transitions. [2021-11-03 22:56:27,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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) [2021-11-03 22:56:27,465 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 894 transitions. [2021-11-03 22:56:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 22:56:27,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:56:27,466 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] [2021-11-03 22:56:27,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-03 22:56:27,466 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:56:27,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:56:27,467 INFO L85 PathProgramCache]: Analyzing trace with hash -839105093, now seen corresponding path program 1 times [2021-11-03 22:56:27,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:56:27,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312164705] [2021-11-03 22:56:27,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:56:27,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:56:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:56:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:56:27,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:56:27,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312164705] [2021-11-03 22:56:27,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312164705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:56:27,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:56:27,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:56:27,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653958896] [2021-11-03 22:56:27,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:56:27,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:56:27,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:56:27,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:56:27,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:56:27,788 INFO L87 Difference]: Start difference. First operand 823 states and 894 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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) [2021-11-03 22:56:30,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:56:34,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:56:34,301 INFO L93 Difference]: Finished difference Result 1032 states and 1125 transitions. [2021-11-03 22:56:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 22:56:34,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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 [2021-11-03 22:56:34,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:56:34,303 INFO L225 Difference]: With dead ends: 1032 [2021-11-03 22:56:34,303 INFO L226 Difference]: Without dead ends: 839 [2021-11-03 22:56:34,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 310.51ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:56:34,303 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 263 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5691.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.67ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6232.72ms IncrementalHoareTripleChecker+Time [2021-11-03 22:56:34,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 0 Invalid, 1451 Unknown, 0 Unchecked, 8.67ms Time], IncrementalHoareTripleChecker [22 Valid, 1428 Invalid, 1 Unknown, 0 Unchecked, 6232.72ms Time] [2021-11-03 22:56:34,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-03 22:56:34,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 811. [2021-11-03 22:56:34,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 802 states have (on average 1.0947630922693268) internal successors, (878), 810 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:34,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 878 transitions. [2021-11-03 22:56:34,366 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 878 transitions. Word has length 92 [2021-11-03 22:56:34,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:56:34,366 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 878 transitions. [2021-11-03 22:56:34,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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) [2021-11-03 22:56:34,366 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 878 transitions. [2021-11-03 22:56:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 22:56:34,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:56:34,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:56:34,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-03 22:56:34,368 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:56:34,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:56:34,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1644110827, now seen corresponding path program 1 times [2021-11-03 22:56:34,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:56:34,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942916736] [2021-11-03 22:56:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:56:34,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:56:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:56:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:56:34,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:56:34,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942916736] [2021-11-03 22:56:34,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942916736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:56:34,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:56:34,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:56:34,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209077278] [2021-11-03 22:56:34,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:56:34,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:56:34,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:56:34,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:56:34,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:56:34,622 INFO L87 Difference]: Start difference. First operand 811 states and 878 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:37,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:56:39,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:56:39,671 INFO L93 Difference]: Finished difference Result 835 states and 903 transitions. [2021-11-03 22:56:39,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:56:39,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-03 22:56:39,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:56:39,673 INFO L225 Difference]: With dead ends: 835 [2021-11-03 22:56:39,673 INFO L226 Difference]: Without dead ends: 758 [2021-11-03 22:56:39,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 190.68ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:56:39,673 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 224 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4413.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.95ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4874.33ms IncrementalHoareTripleChecker+Time [2021-11-03 22:56:39,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 0 Invalid, 832 Unknown, 0 Unchecked, 5.95ms Time], IncrementalHoareTripleChecker [12 Valid, 819 Invalid, 1 Unknown, 0 Unchecked, 4874.33ms Time] [2021-11-03 22:56:39,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-11-03 22:56:39,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 730. [2021-11-03 22:56:39,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 721 states have (on average 1.0957004160887656) internal successors, (790), 729 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:39,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 790 transitions. [2021-11-03 22:56:39,711 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 790 transitions. Word has length 94 [2021-11-03 22:56:39,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:56:39,711 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 790 transitions. [2021-11-03 22:56:39,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:39,712 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 790 transitions. [2021-11-03 22:56:39,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 22:56:39,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:56:39,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:56:39,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-03 22:56:39,728 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:56:39,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:56:39,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1211380649, now seen corresponding path program 1 times [2021-11-03 22:56:39,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:56:39,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977758613] [2021-11-03 22:56:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:56:39,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:56:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:56:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:56:43,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:56:43,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977758613] [2021-11-03 22:56:43,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977758613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:56:43,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:56:43,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 22:56:43,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4234867] [2021-11-03 22:56:43,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:56:43,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 22:56:43,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:56:43,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 22:56:43,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:56:43,138 INFO L87 Difference]: Start difference. First operand 730 states and 790 transitions. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:45,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:56:52,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:56:52,716 INFO L93 Difference]: Finished difference Result 939 states and 1017 transitions. [2021-11-03 22:56:52,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 22:56:52,717 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-03 22:56:52,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:56:52,718 INFO L225 Difference]: With dead ends: 939 [2021-11-03 22:56:52,718 INFO L226 Difference]: Without dead ends: 854 [2021-11-03 22:56:52,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1443.22ms TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2021-11-03 22:56:52,719 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 625 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7851.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.79ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8468.98ms IncrementalHoareTripleChecker+Time [2021-11-03 22:56:52,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 0 Invalid, 2125 Unknown, 0 Unchecked, 18.79ms Time], IncrementalHoareTripleChecker [16 Valid, 2108 Invalid, 1 Unknown, 0 Unchecked, 8468.98ms Time] [2021-11-03 22:56:52,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-11-03 22:56:52,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 723. [2021-11-03 22:56:52,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 715 states have (on average 1.0937062937062938) internal successors, (782), 722 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:52,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 782 transitions. [2021-11-03 22:56:52,763 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 782 transitions. Word has length 94 [2021-11-03 22:56:52,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:56:52,763 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 782 transitions. [2021-11-03 22:56:52,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:52,763 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 782 transitions. [2021-11-03 22:56:52,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 22:56:52,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:56:52,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:56:52,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-03 22:56:52,764 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:56:52,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:56:52,765 INFO L85 PathProgramCache]: Analyzing trace with hash 526175424, now seen corresponding path program 1 times [2021-11-03 22:56:52,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:56:52,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959876115] [2021-11-03 22:56:52,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:56:52,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:56:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:56:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:56:53,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:56:53,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959876115] [2021-11-03 22:56:53,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959876115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:56:53,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:56:53,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:56:53,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244133214] [2021-11-03 22:56:53,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:56:53,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:56:53,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:56:53,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:56:53,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:56:53,014 INFO L87 Difference]: Start difference. First operand 723 states and 782 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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) [2021-11-03 22:56:55,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:56:58,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:56:58,256 INFO L93 Difference]: Finished difference Result 1130 states and 1231 transitions. [2021-11-03 22:56:58,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:56:58,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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 98 [2021-11-03 22:56:58,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:56:58,258 INFO L225 Difference]: With dead ends: 1130 [2021-11-03 22:56:58,258 INFO L226 Difference]: Without dead ends: 963 [2021-11-03 22:56:58,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 152.78ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:56:58,259 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 200 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4639.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.18ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5058.18ms IncrementalHoareTripleChecker+Time [2021-11-03 22:56:58,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 0 Invalid, 1168 Unknown, 0 Unchecked, 7.18ms Time], IncrementalHoareTripleChecker [3 Valid, 1164 Invalid, 1 Unknown, 0 Unchecked, 5058.18ms Time] [2021-11-03 22:56:58,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-11-03 22:56:58,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 830. [2021-11-03 22:56:58,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 822 states have (on average 1.0827250608272505) internal successors, (890), 829 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:58,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 890 transitions. [2021-11-03 22:56:58,311 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 890 transitions. Word has length 98 [2021-11-03 22:56:58,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:56:58,311 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 890 transitions. [2021-11-03 22:56:58,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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) [2021-11-03 22:56:58,311 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 890 transitions. [2021-11-03 22:56:58,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-03 22:56:58,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:56:58,312 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] [2021-11-03 22:56:58,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-03 22:56:58,312 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:56:58,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:56:58,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1768352266, now seen corresponding path program 1 times [2021-11-03 22:56:58,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:56:58,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622408811] [2021-11-03 22:56:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:56:58,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:56:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:56:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:56:58,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:56:58,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622408811] [2021-11-03 22:56:58,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622408811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:56:58,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:56:58,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:56:58,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116575801] [2021-11-03 22:56:58,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:56:58,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:56:58,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:56:58,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:56:58,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:56:58,629 INFO L87 Difference]: Start difference. First operand 830 states and 890 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:01,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:57:05,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:57:05,298 INFO L93 Difference]: Finished difference Result 1163 states and 1248 transitions. [2021-11-03 22:57:05,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 22:57:05,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2021-11-03 22:57:05,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:57:05,300 INFO L225 Difference]: With dead ends: 1163 [2021-11-03 22:57:05,300 INFO L226 Difference]: Without dead ends: 1056 [2021-11-03 22:57:05,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 318.67ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:57:05,301 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 491 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5814.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.33ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6353.36ms IncrementalHoareTripleChecker+Time [2021-11-03 22:57:05,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 0 Invalid, 1275 Unknown, 0 Unchecked, 8.33ms Time], IncrementalHoareTripleChecker [10 Valid, 1264 Invalid, 1 Unknown, 0 Unchecked, 6353.36ms Time] [2021-11-03 22:57:05,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2021-11-03 22:57:05,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 813. [2021-11-03 22:57:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 805 states have (on average 1.0832298136645964) internal successors, (872), 812 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 872 transitions. [2021-11-03 22:57:05,345 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 872 transitions. Word has length 99 [2021-11-03 22:57:05,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:57:05,345 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 872 transitions. [2021-11-03 22:57:05,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:05,346 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 872 transitions. [2021-11-03 22:57:05,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 22:57:05,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:57:05,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:57:05,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-03 22:57:05,347 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:57:05,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:57:05,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2078508213, now seen corresponding path program 1 times [2021-11-03 22:57:05,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:57:05,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228324298] [2021-11-03 22:57:05,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:57:05,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:57:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:57:05,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:57:05,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:57:05,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228324298] [2021-11-03 22:57:05,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228324298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:57:05,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:57:05,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:57:05,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017237678] [2021-11-03 22:57:05,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:57:05,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:57:05,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:57:05,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:57:05,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:57:05,960 INFO L87 Difference]: Start difference. First operand 813 states and 872 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:08,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:57:11,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:57:11,555 INFO L93 Difference]: Finished difference Result 1005 states and 1080 transitions. [2021-11-03 22:57:11,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:57:11,556 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-03 22:57:11,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:57:11,559 INFO L225 Difference]: With dead ends: 1005 [2021-11-03 22:57:11,559 INFO L226 Difference]: Without dead ends: 1003 [2021-11-03 22:57:11,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 319.60ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:57:11,560 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 466 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4884.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.65ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5374.98ms IncrementalHoareTripleChecker+Time [2021-11-03 22:57:11,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 0 Invalid, 949 Unknown, 0 Unchecked, 8.65ms Time], IncrementalHoareTripleChecker [4 Valid, 944 Invalid, 1 Unknown, 0 Unchecked, 5374.98ms Time] [2021-11-03 22:57:11,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-11-03 22:57:11,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 811. [2021-11-03 22:57:11,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 804 states have (on average 1.078358208955224) internal successors, (867), 810 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:11,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 867 transitions. [2021-11-03 22:57:11,609 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 867 transitions. Word has length 100 [2021-11-03 22:57:11,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:57:11,610 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 867 transitions. [2021-11-03 22:57:11,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:11,610 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 867 transitions. [2021-11-03 22:57:11,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 22:57:11,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:57:11,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:57:11,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-03 22:57:11,611 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:57:11,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:57:11,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1992595281, now seen corresponding path program 1 times [2021-11-03 22:57:11,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:57:11,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181294352] [2021-11-03 22:57:11,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:57:11,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:57:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:57:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:57:15,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:57:15,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181294352] [2021-11-03 22:57:15,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181294352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:57:15,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:57:15,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 22:57:15,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684816608] [2021-11-03 22:57:15,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:57:15,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 22:57:15,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:57:15,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 22:57:15,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:57:15,599 INFO L87 Difference]: Start difference. First operand 811 states and 867 transitions. Second operand has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:17,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:57:25,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:57:25,365 INFO L93 Difference]: Finished difference Result 993 states and 1051 transitions. [2021-11-03 22:57:25,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-03 22:57:25,366 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-03 22:57:25,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:57:25,367 INFO L225 Difference]: With dead ends: 993 [2021-11-03 22:57:25,367 INFO L226 Difference]: Without dead ends: 739 [2021-11-03 22:57:25,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1716.77ms TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2021-11-03 22:57:25,368 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 634 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8084.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.34ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8617.89ms IncrementalHoareTripleChecker+Time [2021-11-03 22:57:25,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 0 Invalid, 2234 Unknown, 0 Unchecked, 22.34ms Time], IncrementalHoareTripleChecker [30 Valid, 2203 Invalid, 1 Unknown, 0 Unchecked, 8617.89ms Time] [2021-11-03 22:57:25,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2021-11-03 22:57:25,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 687. [2021-11-03 22:57:25,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 681 states have (on average 1.0719530102790014) internal successors, (730), 686 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:25,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 730 transitions. [2021-11-03 22:57:25,409 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 730 transitions. Word has length 100 [2021-11-03 22:57:25,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:57:25,409 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 730 transitions. [2021-11-03 22:57:25,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:25,409 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 730 transitions. [2021-11-03 22:57:25,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-03 22:57:25,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:57:25,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:57:25,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-03 22:57:25,411 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:57:25,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:57:25,413 INFO L85 PathProgramCache]: Analyzing trace with hash 298918310, now seen corresponding path program 1 times [2021-11-03 22:57:25,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:57:25,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211862586] [2021-11-03 22:57:25,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:57:25,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:57:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:57:29,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:57:29,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:57:29,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211862586] [2021-11-03 22:57:29,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211862586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:57:29,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:57:29,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 22:57:29,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981461201] [2021-11-03 22:57:29,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:57:29,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 22:57:29,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:57:29,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 22:57:29,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:57:29,277 INFO L87 Difference]: Start difference. First operand 687 states and 730 transitions. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:31,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:57:41,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:57:41,371 INFO L93 Difference]: Finished difference Result 1294 states and 1369 transitions. [2021-11-03 22:57:41,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 22:57:41,372 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-03 22:57:41,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:57:41,374 INFO L225 Difference]: With dead ends: 1294 [2021-11-03 22:57:41,374 INFO L226 Difference]: Without dead ends: 1292 [2021-11-03 22:57:41,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3152.29ms TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2021-11-03 22:57:41,375 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1326 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8812.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.12ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9545.27ms IncrementalHoareTripleChecker+Time [2021-11-03 22:57:41,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1326 Valid, 0 Invalid, 2179 Unknown, 0 Unchecked, 18.12ms Time], IncrementalHoareTripleChecker [46 Valid, 2132 Invalid, 1 Unknown, 0 Unchecked, 9545.27ms Time] [2021-11-03 22:57:41,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-11-03 22:57:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 817. [2021-11-03 22:57:41,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 811 states have (on average 1.0715166461159062) internal successors, (869), 816 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:41,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 869 transitions. [2021-11-03 22:57:41,427 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 869 transitions. Word has length 103 [2021-11-03 22:57:41,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:57:41,427 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 869 transitions. [2021-11-03 22:57:41,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:41,427 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 869 transitions. [2021-11-03 22:57:41,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 22:57:41,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:57:41,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:57:41,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-03 22:57:41,428 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:57:41,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:57:41,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1024962729, now seen corresponding path program 1 times [2021-11-03 22:57:41,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:57:41,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669003658] [2021-11-03 22:57:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:57:41,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:57:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:57:41,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:57:41,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:57:41,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669003658] [2021-11-03 22:57:41,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669003658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:57:41,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:57:41,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:57:41,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746952665] [2021-11-03 22:57:41,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:57:41,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:57:41,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:57:41,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:57:41,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:57:41,799 INFO L87 Difference]: Start difference. First operand 817 states and 869 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:43,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:57:48,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:57:48,115 INFO L93 Difference]: Finished difference Result 953 states and 1017 transitions. [2021-11-03 22:57:48,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 22:57:48,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-03 22:57:48,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:57:48,117 INFO L225 Difference]: With dead ends: 953 [2021-11-03 22:57:48,117 INFO L226 Difference]: Without dead ends: 854 [2021-11-03 22:57:48,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 796.90ms TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:57:48,117 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 592 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5119.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.44ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5562.87ms IncrementalHoareTripleChecker+Time [2021-11-03 22:57:48,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 0 Invalid, 1137 Unknown, 0 Unchecked, 11.44ms Time], IncrementalHoareTripleChecker [40 Valid, 1096 Invalid, 1 Unknown, 0 Unchecked, 5562.87ms Time] [2021-11-03 22:57:48,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-11-03 22:57:48,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 814. [2021-11-03 22:57:48,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 808 states have (on average 1.0792079207920793) internal successors, (872), 813 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:48,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 872 transitions. [2021-11-03 22:57:48,175 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 872 transitions. Word has length 104 [2021-11-03 22:57:48,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:57:48,175 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 872 transitions. [2021-11-03 22:57:48,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:48,177 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 872 transitions. [2021-11-03 22:57:48,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 22:57:48,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:57:48,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:57:48,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-03 22:57:48,178 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:57:48,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:57:48,196 INFO L85 PathProgramCache]: Analyzing trace with hash -877967230, now seen corresponding path program 1 times [2021-11-03 22:57:48,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:57:48,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105628487] [2021-11-03 22:57:48,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:57:48,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:57:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:57:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:57:55,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:57:55,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105628487] [2021-11-03 22:57:55,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105628487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:57:55,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:57:55,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 22:57:55,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137872863] [2021-11-03 22:57:55,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:57:55,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 22:57:55,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:57:55,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 22:57:55,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:57:55,676 INFO L87 Difference]: Start difference. First operand 814 states and 872 transitions. Second operand has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:57,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:58:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:58:08,244 INFO L93 Difference]: Finished difference Result 916 states and 976 transitions. [2021-11-03 22:58:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 22:58:08,244 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-03 22:58:08,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:58:08,245 INFO L225 Difference]: With dead ends: 916 [2021-11-03 22:58:08,245 INFO L226 Difference]: Without dead ends: 914 [2021-11-03 22:58:08,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 3791.08ms TimeCoverageRelationStatistics Valid=259, Invalid=733, Unknown=0, NotChecked=0, Total=992 [2021-11-03 22:58:08,246 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1237 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 2643 mSolverCounterSat, 84 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9075.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.86ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2643 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9716.49ms IncrementalHoareTripleChecker+Time [2021-11-03 22:58:08,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1237 Valid, 0 Invalid, 2728 Unknown, 0 Unchecked, 28.86ms Time], IncrementalHoareTripleChecker [84 Valid, 2643 Invalid, 1 Unknown, 0 Unchecked, 9716.49ms Time] [2021-11-03 22:58:08,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-11-03 22:58:08,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 814. [2021-11-03 22:58:08,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 808 states have (on average 1.077970297029703) internal successors, (871), 813 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:08,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 871 transitions. [2021-11-03 22:58:08,295 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 871 transitions. Word has length 108 [2021-11-03 22:58:08,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:58:08,295 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 871 transitions. [2021-11-03 22:58:08,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:08,296 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 871 transitions. [2021-11-03 22:58:08,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 22:58:08,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:58:08,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:58:08,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-03 22:58:08,297 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:58:08,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:58:08,297 INFO L85 PathProgramCache]: Analyzing trace with hash -820736864, now seen corresponding path program 1 times [2021-11-03 22:58:08,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:58:08,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294305579] [2021-11-03 22:58:08,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:58:08,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:58:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:58:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:58:08,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:58:08,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294305579] [2021-11-03 22:58:08,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294305579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:58:08,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:58:08,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:58:08,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637208210] [2021-11-03 22:58:08,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:58:08,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:58:08,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:58:08,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:58:08,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:58:08,546 INFO L87 Difference]: Start difference. First operand 814 states and 871 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:10,588 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:58:14,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:58:14,309 INFO L93 Difference]: Finished difference Result 942 states and 1004 transitions. [2021-11-03 22:58:14,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 22:58:14,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-03 22:58:14,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:58:14,311 INFO L225 Difference]: With dead ends: 942 [2021-11-03 22:58:14,311 INFO L226 Difference]: Without dead ends: 874 [2021-11-03 22:58:14,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 297.18ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:58:14,311 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 380 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4942.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.36ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5464.18ms IncrementalHoareTripleChecker+Time [2021-11-03 22:58:14,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 0 Invalid, 1159 Unknown, 0 Unchecked, 8.36ms Time], IncrementalHoareTripleChecker [9 Valid, 1149 Invalid, 1 Unknown, 0 Unchecked, 5464.18ms Time] [2021-11-03 22:58:14,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-11-03 22:58:14,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 785. [2021-11-03 22:58:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 779 states have (on average 1.0693196405648266) internal successors, (833), 784 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:14,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 833 transitions. [2021-11-03 22:58:14,361 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 833 transitions. Word has length 108 [2021-11-03 22:58:14,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:58:14,361 INFO L470 AbstractCegarLoop]: Abstraction has 785 states and 833 transitions. [2021-11-03 22:58:14,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:14,361 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 833 transitions. [2021-11-03 22:58:14,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 22:58:14,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:58:14,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:58:14,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-03 22:58:14,363 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:58:14,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:58:14,363 INFO L85 PathProgramCache]: Analyzing trace with hash -60752716, now seen corresponding path program 1 times [2021-11-03 22:58:14,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:58:14,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196928213] [2021-11-03 22:58:14,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:58:14,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:58:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:58:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:58:14,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:58:14,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196928213] [2021-11-03 22:58:14,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196928213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:58:14,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:58:14,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:58:14,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5889707] [2021-11-03 22:58:14,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:58:14,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:58:14,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:58:14,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:58:14,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:58:14,706 INFO L87 Difference]: Start difference. First operand 785 states and 833 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:16,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:58:20,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:58:20,754 INFO L93 Difference]: Finished difference Result 855 states and 906 transitions. [2021-11-03 22:58:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:58:20,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-03 22:58:20,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:58:20,755 INFO L225 Difference]: With dead ends: 855 [2021-11-03 22:58:20,755 INFO L226 Difference]: Without dead ends: 769 [2021-11-03 22:58:20,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 346.77ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:58:20,756 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 199 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5207.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.05ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5735.19ms IncrementalHoareTripleChecker+Time [2021-11-03 22:58:20,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 0 Invalid, 1349 Unknown, 0 Unchecked, 7.05ms Time], IncrementalHoareTripleChecker [14 Valid, 1334 Invalid, 1 Unknown, 0 Unchecked, 5735.19ms Time] [2021-11-03 22:58:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2021-11-03 22:58:20,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 755. [2021-11-03 22:58:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 750 states have (on average 1.0613333333333332) internal successors, (796), 754 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:20,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 796 transitions. [2021-11-03 22:58:20,805 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 796 transitions. Word has length 108 [2021-11-03 22:58:20,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:58:20,805 INFO L470 AbstractCegarLoop]: Abstraction has 755 states and 796 transitions. [2021-11-03 22:58:20,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:20,805 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 796 transitions. [2021-11-03 22:58:20,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 22:58:20,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:58:20,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:58:20,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-03 22:58:20,806 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:58:20,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:58:20,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1971687249, now seen corresponding path program 1 times [2021-11-03 22:58:20,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:58:20,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075409920] [2021-11-03 22:58:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:58:20,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:58:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:58:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:58:21,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:58:21,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075409920] [2021-11-03 22:58:21,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075409920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:58:21,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:58:21,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 22:58:21,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117069213] [2021-11-03 22:58:21,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:58:21,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 22:58:21,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:58:21,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 22:58:21,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:58:21,696 INFO L87 Difference]: Start difference. First operand 755 states and 796 transitions. Second operand has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:23,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:58:33,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:58:33,413 INFO L93 Difference]: Finished difference Result 965 states and 1015 transitions. [2021-11-03 22:58:33,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 22:58:33,414 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 22:58:33,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:58:33,415 INFO L225 Difference]: With dead ends: 965 [2021-11-03 22:58:33,415 INFO L226 Difference]: Without dead ends: 829 [2021-11-03 22:58:33,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1306.73ms TimeCoverageRelationStatistics Valid=211, Invalid=545, Unknown=0, NotChecked=0, Total=756 [2021-11-03 22:58:33,416 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 990 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10049.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.64ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10697.79ms IncrementalHoareTripleChecker+Time [2021-11-03 22:58:33,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 0 Invalid, 3274 Unknown, 0 Unchecked, 24.64ms Time], IncrementalHoareTripleChecker [40 Valid, 3233 Invalid, 1 Unknown, 0 Unchecked, 10697.79ms Time] [2021-11-03 22:58:33,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2021-11-03 22:58:33,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 649. [2021-11-03 22:58:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 644 states have (on average 1.0543478260869565) internal successors, (679), 648 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 679 transitions. [2021-11-03 22:58:33,486 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 679 transitions. Word has length 114 [2021-11-03 22:58:33,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:58:33,486 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 679 transitions. [2021-11-03 22:58:33,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:33,486 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 679 transitions. [2021-11-03 22:58:33,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-03 22:58:33,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:58:33,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:58:33,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-03 22:58:33,487 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:58:33,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:58:33,488 INFO L85 PathProgramCache]: Analyzing trace with hash 51100407, now seen corresponding path program 1 times [2021-11-03 22:58:33,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:58:33,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937295284] [2021-11-03 22:58:33,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:58:33,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:58:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:58:36,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:58:36,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:58:36,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937295284] [2021-11-03 22:58:36,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937295284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:58:36,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:58:36,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 22:58:36,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437307159] [2021-11-03 22:58:36,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:58:36,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 22:58:36,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:58:36,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 22:58:36,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:58:36,939 INFO L87 Difference]: Start difference. First operand 649 states and 679 transitions. Second operand has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:38,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:58:51,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:58:51,275 INFO L93 Difference]: Finished difference Result 1030 states and 1072 transitions. [2021-11-03 22:58:51,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-03 22:58:51,275 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-03 22:58:51,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:58:51,277 INFO L225 Difference]: With dead ends: 1030 [2021-11-03 22:58:51,277 INFO L226 Difference]: Without dead ends: 1015 [2021-11-03 22:58:51,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 2848.29ms TimeCoverageRelationStatistics Valid=240, Invalid=752, Unknown=0, NotChecked=0, Total=992 [2021-11-03 22:58:51,277 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1200 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 3475 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11198.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.18ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3475 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11959.36ms IncrementalHoareTripleChecker+Time [2021-11-03 22:58:51,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 0 Invalid, 3522 Unknown, 0 Unchecked, 35.18ms Time], IncrementalHoareTripleChecker [46 Valid, 3475 Invalid, 1 Unknown, 0 Unchecked, 11959.36ms Time] [2021-11-03 22:58:51,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2021-11-03 22:58:51,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 707. [2021-11-03 22:58:51,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 702 states have (on average 1.0512820512820513) internal successors, (738), 706 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:51,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 738 transitions. [2021-11-03 22:58:51,324 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 738 transitions. Word has length 115 [2021-11-03 22:58:51,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:58:51,324 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 738 transitions. [2021-11-03 22:58:51,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:51,324 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 738 transitions. [2021-11-03 22:58:51,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-03 22:58:51,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:58:51,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:58:51,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-03 22:58:51,325 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:58:51,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:58:51,326 INFO L85 PathProgramCache]: Analyzing trace with hash 731158777, now seen corresponding path program 1 times [2021-11-03 22:58:51,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:58:51,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399669116] [2021-11-03 22:58:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:58:51,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:58:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:58:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:58:51,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:58:51,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399669116] [2021-11-03 22:58:51,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399669116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:58:51,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:58:51,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:58:51,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075998346] [2021-11-03 22:58:51,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:58:51,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:58:51,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:58:51,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:58:51,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:58:51,799 INFO L87 Difference]: Start difference. First operand 707 states and 738 transitions. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:54,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:58:58,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:58:58,147 INFO L93 Difference]: Finished difference Result 768 states and 800 transitions. [2021-11-03 22:58:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 22:58:58,148 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-03 22:58:58,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:58:58,149 INFO L225 Difference]: With dead ends: 768 [2021-11-03 22:58:58,149 INFO L226 Difference]: Without dead ends: 736 [2021-11-03 22:58:58,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 478.54ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:58:58,149 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 505 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5485.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.93ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6009.36ms IncrementalHoareTripleChecker+Time [2021-11-03 22:58:58,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [505 Valid, 0 Invalid, 1005 Unknown, 0 Unchecked, 8.93ms Time], IncrementalHoareTripleChecker [28 Valid, 976 Invalid, 1 Unknown, 0 Unchecked, 6009.36ms Time] [2021-11-03 22:58:58,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-11-03 22:58:58,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 703. [2021-11-03 22:58:58,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 698 states have (on average 1.0458452722063036) internal successors, (730), 702 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:58,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 730 transitions. [2021-11-03 22:58:58,217 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 730 transitions. Word has length 115 [2021-11-03 22:58:58,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:58:58,218 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 730 transitions. [2021-11-03 22:58:58,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:58,218 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 730 transitions. [2021-11-03 22:58:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-03 22:58:58,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:58:58,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:58:58,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-03 22:58:58,219 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:58:58,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:58:58,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1573300589, now seen corresponding path program 1 times [2021-11-03 22:58:58,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:58:58,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696745585] [2021-11-03 22:58:58,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:58:58,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:58:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:58:59,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:58:59,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:58:59,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696745585] [2021-11-03 22:58:59,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696745585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:58:59,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:58:59,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-03 22:58:59,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120699756] [2021-11-03 22:58:59,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:58:59,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 22:58:59,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:58:59,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 22:58:59,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-11-03 22:58:59,966 INFO L87 Difference]: Start difference. First operand 703 states and 730 transitions. Second operand has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:59:02,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:59:18,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:59:18,119 INFO L93 Difference]: Finished difference Result 817 states and 843 transitions. [2021-11-03 22:59:18,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-03 22:59:18,119 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-03 22:59:18,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:59:18,120 INFO L225 Difference]: With dead ends: 817 [2021-11-03 22:59:18,120 INFO L226 Difference]: Without dead ends: 737 [2021-11-03 22:59:18,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 5590.30ms TimeCoverageRelationStatistics Valid=470, Invalid=2500, Unknown=0, NotChecked=0, Total=2970 [2021-11-03 22:59:18,121 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1035 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 3616 mSolverCounterSat, 93 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12558.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.93ms SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3616 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13437.55ms IncrementalHoareTripleChecker+Time [2021-11-03 22:59:18,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 0 Invalid, 3710 Unknown, 0 Unchecked, 35.93ms Time], IncrementalHoareTripleChecker [93 Valid, 3616 Invalid, 1 Unknown, 0 Unchecked, 13437.55ms Time] [2021-11-03 22:59:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-11-03 22:59:18,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 706. [2021-11-03 22:59:18,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 701 states have (on average 1.0456490727532097) internal successors, (733), 705 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:59:18,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 733 transitions. [2021-11-03 22:59:18,165 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 733 transitions. Word has length 115 [2021-11-03 22:59:18,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:59:18,165 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 733 transitions. [2021-11-03 22:59:18,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:59:18,165 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 733 transitions. [2021-11-03 22:59:18,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-03 22:59:18,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:59:18,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:59:18,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-03 22:59:18,167 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:59:18,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:59:18,167 INFO L85 PathProgramCache]: Analyzing trace with hash -459372320, now seen corresponding path program 1 times [2021-11-03 22:59:18,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:59:18,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241691317] [2021-11-03 22:59:18,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:59:18,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:59:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:59:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:59:18,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:59:18,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241691317] [2021-11-03 22:59:18,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241691317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:59:18,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:59:18,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 22:59:18,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742444655] [2021-11-03 22:59:18,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:59:18,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 22:59:18,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:59:18,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 22:59:18,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:59:18,942 INFO L87 Difference]: Start difference. First operand 706 states and 733 transitions. Second operand has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:59:21,771 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:59:28,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:59:28,293 INFO L93 Difference]: Finished difference Result 1002 states and 1039 transitions. [2021-11-03 22:59:28,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 22:59:28,293 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-03 22:59:28,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:59:28,294 INFO L225 Difference]: With dead ends: 1002 [2021-11-03 22:59:28,294 INFO L226 Difference]: Without dead ends: 764 [2021-11-03 22:59:28,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1020.98ms TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2021-11-03 22:59:28,295 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1088 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7876.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.74ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8532.14ms IncrementalHoareTripleChecker+Time [2021-11-03 22:59:28,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1088 Valid, 0 Invalid, 1977 Unknown, 0 Unchecked, 18.74ms Time], IncrementalHoareTripleChecker [42 Valid, 1934 Invalid, 1 Unknown, 0 Unchecked, 8532.14ms Time] [2021-11-03 22:59:28,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-11-03 22:59:28,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 700. [2021-11-03 22:59:28,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 695 states have (on average 1.0431654676258992) internal successors, (725), 699 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:59:28,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 725 transitions. [2021-11-03 22:59:28,338 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 725 transitions. Word has length 118 [2021-11-03 22:59:28,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:59:28,338 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 725 transitions. [2021-11-03 22:59:28,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:59:28,338 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 725 transitions. [2021-11-03 22:59:28,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-03 22:59:28,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:59:28,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:59:28,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-03 22:59:28,339 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:59:28,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:59:28,340 INFO L85 PathProgramCache]: Analyzing trace with hash -698611479, now seen corresponding path program 1 times [2021-11-03 22:59:28,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:59:28,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966870848] [2021-11-03 22:59:28,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:59:28,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:59:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:59:34,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:59:34,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:59:34,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966870848] [2021-11-03 22:59:34,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966870848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:59:34,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:59:34,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 22:59:34,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147058274] [2021-11-03 22:59:34,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:59:34,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 22:59:34,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:59:34,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 22:59:34,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:59:34,259 INFO L87 Difference]: Start difference. First operand 700 states and 725 transitions. Second operand has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:59:37,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:59:46,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:59:46,518 INFO L93 Difference]: Finished difference Result 919 states and 950 transitions. [2021-11-03 22:59:46,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 22:59:46,519 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-03 22:59:46,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:59:46,520 INFO L225 Difference]: With dead ends: 919 [2021-11-03 22:59:46,520 INFO L226 Difference]: Without dead ends: 861 [2021-11-03 22:59:46,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1965.91ms TimeCoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2021-11-03 22:59:46,521 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 986 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 2782 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10031.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.42ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2782 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10804.63ms IncrementalHoareTripleChecker+Time [2021-11-03 22:59:46,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 0 Invalid, 2833 Unknown, 0 Unchecked, 28.42ms Time], IncrementalHoareTripleChecker [50 Valid, 2782 Invalid, 1 Unknown, 0 Unchecked, 10804.63ms Time] [2021-11-03 22:59:46,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-11-03 22:59:46,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 670. [2021-11-03 22:59:46,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 665 states have (on average 1.049624060150376) internal successors, (698), 669 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:59:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 698 transitions. [2021-11-03 22:59:46,565 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 698 transitions. Word has length 121 [2021-11-03 22:59:46,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:59:46,566 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 698 transitions. [2021-11-03 22:59:46,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:59:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 698 transitions. [2021-11-03 22:59:46,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-03 22:59:46,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:59:46,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:59:46,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-03 22:59:46,567 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 22:59:46,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:59:46,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1602895479, now seen corresponding path program 1 times [2021-11-03 22:59:46,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:59:46,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865870213] [2021-11-03 22:59:46,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:59:46,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:59:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:59:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:59:51,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:59:51,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865870213] [2021-11-03 22:59:51,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865870213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:59:51,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:59:51,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:59:51,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133712276] [2021-11-03 22:59:51,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:59:51,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:59:51,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:59:51,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:59:51,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:59:51,793 INFO L87 Difference]: Start difference. First operand 670 states and 698 transitions. Second operand has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:59:53,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:00:03,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:00:03,843 INFO L93 Difference]: Finished difference Result 823 states and 853 transitions. [2021-11-03 23:00:03,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 23:00:03,844 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-11-03 23:00:03,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:00:03,845 INFO L225 Difference]: With dead ends: 823 [2021-11-03 23:00:03,845 INFO L226 Difference]: Without dead ends: 706 [2021-11-03 23:00:03,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1472.59ms TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-03 23:00:03,845 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 766 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 3138 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10279.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.19ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3138 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11004.37ms IncrementalHoareTripleChecker+Time [2021-11-03 23:00:03,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 0 Invalid, 3159 Unknown, 0 Unchecked, 28.19ms Time], IncrementalHoareTripleChecker [20 Valid, 3138 Invalid, 1 Unknown, 0 Unchecked, 11004.37ms Time] [2021-11-03 23:00:03,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-11-03 23:00:03,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 568. [2021-11-03 23:00:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 563 states have (on average 1.0550621669626998) internal successors, (594), 567 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:00:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 594 transitions. [2021-11-03 23:00:03,897 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 594 transitions. Word has length 123 [2021-11-03 23:00:03,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:00:03,897 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 594 transitions. [2021-11-03 23:00:03,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:00:03,897 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 594 transitions. [2021-11-03 23:00:03,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-03 23:00:03,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:00:03,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:00:03,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-03 23:00:03,898 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 23:00:03,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:00:03,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1366392471, now seen corresponding path program 1 times [2021-11-03 23:00:03,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:00:03,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668145266] [2021-11-03 23:00:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:00:03,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:00:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:00:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:00:08,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:00:08,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668145266] [2021-11-03 23:00:08,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668145266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:00:08,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:00:08,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 23:00:08,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331253192] [2021-11-03 23:00:08,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:00:08,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 23:00:08,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:00:08,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 23:00:08,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-03 23:00:08,355 INFO L87 Difference]: Start difference. First operand 568 states and 594 transitions. Second operand has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:00:10,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:00:23,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:00:23,230 INFO L93 Difference]: Finished difference Result 705 states and 730 transitions. [2021-11-03 23:00:23,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 23:00:23,230 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-11-03 23:00:23,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:00:23,231 INFO L225 Difference]: With dead ends: 705 [2021-11-03 23:00:23,231 INFO L226 Difference]: Without dead ends: 615 [2021-11-03 23:00:23,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 4496.46ms TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2021-11-03 23:00:23,232 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 615 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 2817 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10536.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.90ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2817 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11282.96ms IncrementalHoareTripleChecker+Time [2021-11-03 23:00:23,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 0 Invalid, 2833 Unknown, 0 Unchecked, 30.90ms Time], IncrementalHoareTripleChecker [15 Valid, 2817 Invalid, 1 Unknown, 0 Unchecked, 11282.96ms Time] [2021-11-03 23:00:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-11-03 23:00:23,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 497. [2021-11-03 23:00:23,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 493 states have (on average 1.050709939148073) internal successors, (518), 496 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:00:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 518 transitions. [2021-11-03 23:00:23,270 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 518 transitions. Word has length 123 [2021-11-03 23:00:23,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:00:23,270 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 518 transitions. [2021-11-03 23:00:23,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:00:23,271 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 518 transitions. [2021-11-03 23:00:23,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-03 23:00:23,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:00:23,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:00:23,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-03 23:00:23,272 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 23:00:23,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:00:23,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1974556805, now seen corresponding path program 1 times [2021-11-03 23:00:23,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:00:23,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206396588] [2021-11-03 23:00:23,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:00:23,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:00:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:00:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:00:24,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:00:24,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206396588] [2021-11-03 23:00:24,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206396588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:00:24,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:00:24,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 23:00:24,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368782454] [2021-11-03 23:00:24,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:00:24,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 23:00:24,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:00:24,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 23:00:24,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-11-03 23:00:24,958 INFO L87 Difference]: Start difference. First operand 497 states and 518 transitions. Second operand has 19 states, 19 states have (on average 6.526315789473684) internal successors, (124), 19 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:00:27,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:00:34,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:00:34,960 INFO L93 Difference]: Finished difference Result 526 states and 546 transitions. [2021-11-03 23:00:34,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 23:00:34,960 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.526315789473684) internal successors, (124), 19 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-03 23:00:34,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:00:34,961 INFO L225 Difference]: With dead ends: 526 [2021-11-03 23:00:34,961 INFO L226 Difference]: Without dead ends: 446 [2021-11-03 23:00:34,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2719.70ms TimeCoverageRelationStatistics Valid=336, Invalid=996, Unknown=0, NotChecked=0, Total=1332 [2021-11-03 23:00:34,962 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1601 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 1738 mSolverCounterSat, 110 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7529.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.33ms SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1738 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8160.40ms IncrementalHoareTripleChecker+Time [2021-11-03 23:00:34,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1601 Valid, 0 Invalid, 1849 Unknown, 0 Unchecked, 21.33ms Time], IncrementalHoareTripleChecker [110 Valid, 1738 Invalid, 1 Unknown, 0 Unchecked, 8160.40ms Time] [2021-11-03 23:00:34,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-03 23:00:34,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 422. [2021-11-03 23:00:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 418 states have (on average 1.0502392344497609) internal successors, (439), 421 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:00:34,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 439 transitions. [2021-11-03 23:00:34,989 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 439 transitions. Word has length 124 [2021-11-03 23:00:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:00:34,989 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 439 transitions. [2021-11-03 23:00:34,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.526315789473684) internal successors, (124), 19 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:00:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 439 transitions. [2021-11-03 23:00:34,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-03 23:00:34,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:00:34,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:00:34,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-03 23:00:34,990 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 23:00:34,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:00:34,991 INFO L85 PathProgramCache]: Analyzing trace with hash -61144625, now seen corresponding path program 1 times [2021-11-03 23:00:34,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:00:34,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48154117] [2021-11-03 23:00:34,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:00:34,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:00:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:00:42,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:00:42,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:00:42,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48154117] [2021-11-03 23:00:42,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48154117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:00:42,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:00:42,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 23:00:42,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083471414] [2021-11-03 23:00:42,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:00:42,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 23:00:42,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:00:42,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 23:00:42,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-03 23:00:42,582 INFO L87 Difference]: Start difference. First operand 422 states and 439 transitions. Second operand has 17 states, 17 states have (on average 7.588235294117647) internal successors, (129), 17 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:00:45,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:00:57,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:00:57,029 INFO L93 Difference]: Finished difference Result 449 states and 467 transitions. [2021-11-03 23:00:57,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 23:00:57,029 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.588235294117647) internal successors, (129), 17 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-03 23:00:57,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:00:57,030 INFO L225 Difference]: With dead ends: 449 [2021-11-03 23:00:57,030 INFO L226 Difference]: Without dead ends: 447 [2021-11-03 23:00:57,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 5318.20ms TimeCoverageRelationStatistics Valid=199, Invalid=671, Unknown=0, NotChecked=0, Total=870 [2021-11-03 23:00:57,030 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1075 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 63 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9648.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.13ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10420.30ms IncrementalHoareTripleChecker+Time [2021-11-03 23:00:57,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 0 Invalid, 2369 Unknown, 0 Unchecked, 28.13ms Time], IncrementalHoareTripleChecker [63 Valid, 2305 Invalid, 1 Unknown, 0 Unchecked, 10420.30ms Time] [2021-11-03 23:00:57,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-03 23:00:57,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 422. [2021-11-03 23:00:57,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 418 states have (on average 1.0502392344497609) internal successors, (439), 421 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:00:57,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 439 transitions. [2021-11-03 23:00:57,060 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 439 transitions. Word has length 129 [2021-11-03 23:00:57,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:00:57,060 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 439 transitions. [2021-11-03 23:00:57,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.588235294117647) internal successors, (129), 17 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:00:57,061 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 439 transitions. [2021-11-03 23:00:57,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 23:00:57,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:00:57,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:00:57,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-03 23:00:57,062 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 23:00:57,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:00:57,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1901125201, now seen corresponding path program 1 times [2021-11-03 23:00:57,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:00:57,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798549400] [2021-11-03 23:00:57,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:00:57,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:00:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:00:57,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:00:57,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:00:57,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798549400] [2021-11-03 23:00:57,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798549400] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:00:57,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:00:57,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:00:57,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461245471] [2021-11-03 23:00:57,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:00:57,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:00:57,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:00:57,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:00:57,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:00:57,415 INFO L87 Difference]: Start difference. First operand 422 states and 439 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:01:00,313 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:01:02,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:01:02,826 INFO L93 Difference]: Finished difference Result 486 states and 506 transitions. [2021-11-03 23:01:02,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:01:02,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-03 23:01:02,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:01:02,827 INFO L225 Difference]: With dead ends: 486 [2021-11-03 23:01:02,827 INFO L226 Difference]: Without dead ends: 480 [2021-11-03 23:01:02,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 203.67ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 23:01:02,828 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 281 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4767.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.18ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5261.76ms IncrementalHoareTripleChecker+Time [2021-11-03 23:01:02,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 0 Invalid, 705 Unknown, 0 Unchecked, 6.18ms Time], IncrementalHoareTripleChecker [4 Valid, 700 Invalid, 1 Unknown, 0 Unchecked, 5261.76ms Time] [2021-11-03 23:01:02,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-03 23:01:02,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 464. [2021-11-03 23:01:02,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 460 states have (on average 1.05) internal successors, (483), 463 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:01:02,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 483 transitions. [2021-11-03 23:01:02,878 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 483 transitions. Word has length 131 [2021-11-03 23:01:02,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:01:02,879 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 483 transitions. [2021-11-03 23:01:02,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:01:02,879 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 483 transitions. [2021-11-03 23:01:02,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 23:01:02,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:01:02,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:01:02,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-03 23:01:02,880 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 23:01:02,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:01:02,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2056948468, now seen corresponding path program 1 times [2021-11-03 23:01:02,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:01:02,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896839547] [2021-11-03 23:01:02,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:01:02,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:01:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 23:01:09,228 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. Killed by 15