./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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_byte_buf_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 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 12:37:05,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 12:37:05,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 12:37:05,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 12:37:05,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 12:37:05,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 12:37:05,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 12:37:05,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 12:37:05,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 12:37:05,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 12:37:05,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 12:37:05,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 12:37:05,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 12:37:05,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 12:37:05,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 12:37:05,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 12:37:05,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 12:37:05,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 12:37:05,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 12:37:05,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 12:37:05,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 12:37:05,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 12:37:05,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 12:37:05,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 12:37:05,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 12:37:05,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 12:37:05,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 12:37:05,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 12:37:05,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 12:37:05,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 12:37:05,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 12:37:05,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 12:37:05,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 12:37:05,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 12:37:05,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 12:37:05,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 12:37:05,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 12:37:05,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 12:37:05,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 12:37:05,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 12:37:05,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 12:37:05,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 12:37:05,240 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 12:37:05,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 12:37:05,241 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 12:37:05,241 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 12:37:05,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 12:37:05,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 12:37:05,243 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 12:37:05,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 12:37:05,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 12:37:05,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 12:37:05,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 12:37:05,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 12:37:05,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 12:37:05,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 12:37:05,245 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 12:37:05,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 12:37:05,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 12:37:05,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 12:37:05,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 12:37:05,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:37:05,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 12:37:05,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 12:37:05,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 12:37:05,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 12:37:05,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 12:37:05,252 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 12:37:05,252 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 12:37:05,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 12:37:05,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 12:37:05,253 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd [2021-11-05 12:37:05,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 12:37:05,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 12:37:05,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 12:37:05,608 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 12:37:05,609 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 12:37:05,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-05 12:37:05,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92bb5d6c5/a8f8098b1d5645fa98f74d255ba6011a/FLAGdd0133da5 [2021-11-05 12:37:06,378 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 12:37:06,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-05 12:37:06,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92bb5d6c5/a8f8098b1d5645fa98f74d255ba6011a/FLAGdd0133da5 [2021-11-05 12:37:06,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92bb5d6c5/a8f8098b1d5645fa98f74d255ba6011a [2021-11-05 12:37:06,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 12:37:06,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 12:37:06,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 12:37:06,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 12:37:06,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 12:37:06,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:37:06" (1/1) ... [2021-11-05 12:37:06,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@375cb2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:37:06, skipping insertion in model container [2021-11-05 12:37:06,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:37:06" (1/1) ... [2021-11-05 12:37:06,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 12:37:06,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 12:37:06,746 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_byte_buf_harness.i[4501,4514] [2021-11-05 12:37:06,752 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_byte_buf_harness.i[4561,4574] [2021-11-05 12:37:06,773 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:37:06,778 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:37:07,304 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,304 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,304 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,305 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,316 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,322 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,324 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,524 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:37:07,525 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:37:07,526 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:37:07,526 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:37:07,527 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:37:07,528 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:37:07,528 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:37:07,528 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:37:07,528 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:37:07,529 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:37:07,690 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:37:07,800 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,800 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:37:07,900 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 12:37:07,925 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_byte_buf_harness.i[4501,4514] [2021-11-05 12:37:07,927 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_byte_buf_harness.i[4561,4574] [2021-11-05 12:37:07,929 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:37:07,930 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:37:07,957 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,958 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,958 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,959 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,959 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,968 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,969 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:07,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:08,003 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:37:08,004 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:37:08,005 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:37:08,005 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:37:08,006 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:37:08,006 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:37:08,006 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:37:08,006 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:37:08,007 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:37:08,009 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:37:08,036 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:37:08,082 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:08,082 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:37:08,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:37:08,328 INFO L208 MainTranslator]: Completed translation [2021-11-05 12:37:08,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:37:08 WrapperNode [2021-11-05 12:37:08,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 12:37:08,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 12:37:08,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 12:37:08,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 12:37:08,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:37:08" (1/1) ... [2021-11-05 12:37:08,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:37:08" (1/1) ... [2021-11-05 12:37:08,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 12:37:08,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 12:37:08,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 12:37:08,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 12:37:08,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:37:08" (1/1) ... [2021-11-05 12:37:08,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:37:08" (1/1) ... [2021-11-05 12:37:08,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:37:08" (1/1) ... [2021-11-05 12:37:08,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:37:08" (1/1) ... [2021-11-05 12:37:08,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:37:08" (1/1) ... [2021-11-05 12:37:08,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:37:08" (1/1) ... [2021-11-05 12:37:08,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:37:08" (1/1) ... [2021-11-05 12:37:08,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 12:37:08,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 12:37:08,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 12:37:08,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 12:37:08,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:37:08" (1/1) ... [2021-11-05 12:37:08,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:37:08,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:37:08,677 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) [2021-11-05 12:37:08,694 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 [2021-11-05 12:37:08,706 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-05 12:37:08,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 12:37:08,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 12:37:08,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 12:37:08,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 12:37:08,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 12:37:08,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 12:37:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 12:37:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 12:37:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 12:37:08,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 12:37:08,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 12:37:16,705 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 12:37:16,705 INFO L299 CfgBuilder]: Removed 114 assume(true) statements. [2021-11-05 12:37:16,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:37:16 BoogieIcfgContainer [2021-11-05 12:37:16,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 12:37:16,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 12:37:16,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 12:37:16,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 12:37:16,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 12:37:06" (1/3) ... [2021-11-05 12:37:16,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79790eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:37:16, skipping insertion in model container [2021-11-05 12:37:16,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:37:08" (2/3) ... [2021-11-05 12:37:16,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79790eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:37:16, skipping insertion in model container [2021-11-05 12:37:16,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:37:16" (3/3) ... [2021-11-05 12:37:16,715 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_byte_buf_harness.i [2021-11-05 12:37:16,719 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 12:37:16,719 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-11-05 12:37:16,762 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 12:37:16,772 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 [2021-11-05 12:37:16,772 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-11-05 12:37:16,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 224 states, 210 states have (on average 1.480952380952381) internal successors, (311), 223 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:16,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 12:37:16,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:16,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:37:16,809 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:37:16,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:16,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1810806174, now seen corresponding path program 1 times [2021-11-05 12:37:16,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:16,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631630266] [2021-11-05 12:37:16,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:16,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:17,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:17,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631630266] [2021-11-05 12:37:17,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631630266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:17,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:17,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 12:37:17,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450402013] [2021-11-05 12:37:17,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:17,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 12:37:17,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:17,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 12:37:17,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 12:37:17,310 INFO L87 Difference]: Start difference. First operand has 224 states, 210 states have (on average 1.480952380952381) internal successors, (311), 223 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:17,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:17,332 INFO L93 Difference]: Finished difference Result 444 states and 617 transitions. [2021-11-05 12:37:17,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 12:37:17,334 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 12:37:17,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:17,341 INFO L225 Difference]: With dead ends: 444 [2021-11-05 12:37:17,341 INFO L226 Difference]: Without dead ends: 217 [2021-11-05 12:37:17,344 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 [2021-11-05 12:37:17,346 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:17,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 1.64ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 12:37:17,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-05 12:37:17,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-05 12:37:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3480392156862746) internal successors, (275), 216 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 275 transitions. [2021-11-05 12:37:17,379 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 275 transitions. Word has length 53 [2021-11-05 12:37:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:17,379 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 275 transitions. [2021-11-05 12:37:17,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:17,380 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 275 transitions. [2021-11-05 12:37:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 12:37:17,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:17,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:37:17,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 12:37:17,382 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:37:17,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:17,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1818889704, now seen corresponding path program 1 times [2021-11-05 12:37:17,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:17,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280434387] [2021-11-05 12:37:17,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:17,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:17,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:17,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280434387] [2021-11-05 12:37:17,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280434387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:17,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:17,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:37:17,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009221827] [2021-11-05 12:37:17,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:17,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:37:17,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:17,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:37:17,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:37:17,704 INFO L87 Difference]: Start difference. First operand 217 states and 275 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:17,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:17,885 INFO L93 Difference]: Finished difference Result 413 states and 523 transitions. [2021-11-05 12:37:17,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:37:17,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 12:37:17,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:17,887 INFO L225 Difference]: With dead ends: 413 [2021-11-05 12:37:17,888 INFO L226 Difference]: Without dead ends: 217 [2021-11-05 12:37:17,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.42ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:37:17,889 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 311 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 141.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.91ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 154.88ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:17,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 462 Invalid, 36 Unknown, 0 Unchecked, 4.91ms Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 154.88ms Time] [2021-11-05 12:37:17,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-05 12:37:17,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-05 12:37:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3333333333333333) internal successors, (272), 216 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:17,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 272 transitions. [2021-11-05 12:37:17,898 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 272 transitions. Word has length 53 [2021-11-05 12:37:17,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:17,899 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 272 transitions. [2021-11-05 12:37:17,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:17,899 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 272 transitions. [2021-11-05 12:37:17,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 12:37:17,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:17,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:37:17,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 12:37:17,901 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:37:17,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:17,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1514747006, now seen corresponding path program 1 times [2021-11-05 12:37:17,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:17,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874902361] [2021-11-05 12:37:17,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:17,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:18,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:18,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:18,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874902361] [2021-11-05 12:37:18,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874902361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:18,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:18,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:37:18,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016885232] [2021-11-05 12:37:18,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:18,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:37:18,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:18,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:37:18,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:37:18,221 INFO L87 Difference]: Start difference. First operand 217 states and 272 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 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) [2021-11-05 12:37:18,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:18,363 INFO L93 Difference]: Finished difference Result 385 states and 482 transitions. [2021-11-05 12:37:18,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:37:18,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 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 [2021-11-05 12:37:18,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:18,365 INFO L225 Difference]: With dead ends: 385 [2021-11-05 12:37:18,365 INFO L226 Difference]: Without dead ends: 217 [2021-11-05 12:37:18,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.98ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:37:18,367 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 242 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.67ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.46ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:18,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 436 Invalid, 35 Unknown, 0 Unchecked, 2.67ms Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 127.46ms Time] [2021-11-05 12:37:18,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-05 12:37:18,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-05 12:37:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3235294117647058) internal successors, (270), 216 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:18,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 270 transitions. [2021-11-05 12:37:18,376 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 270 transitions. Word has length 57 [2021-11-05 12:37:18,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:18,376 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 270 transitions. [2021-11-05 12:37:18,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 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) [2021-11-05 12:37:18,377 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 270 transitions. [2021-11-05 12:37:18,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-05 12:37:18,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:18,378 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] [2021-11-05 12:37:18,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 12:37:18,378 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:37:18,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:18,379 INFO L85 PathProgramCache]: Analyzing trace with hash 319412887, now seen corresponding path program 1 times [2021-11-05 12:37:18,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:18,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627374842] [2021-11-05 12:37:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:18,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:18,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:18,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627374842] [2021-11-05 12:37:18,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627374842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:18,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:18,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:37:18,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497264101] [2021-11-05 12:37:18,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:18,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:37:18,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:18,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:37:18,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:37:18,777 INFO L87 Difference]: Start difference. First operand 217 states and 270 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:19,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:19,105 INFO L93 Difference]: Finished difference Result 326 states and 400 transitions. [2021-11-05 12:37:19,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:37:19,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-05 12:37:19,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:19,107 INFO L225 Difference]: With dead ends: 326 [2021-11-05 12:37:19,107 INFO L226 Difference]: Without dead ends: 217 [2021-11-05 12:37:19,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 266.04ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:37:19,108 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 751 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.65ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 173.90ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:19,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 529 Invalid, 41 Unknown, 0 Unchecked, 2.65ms Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 173.90ms Time] [2021-11-05 12:37:19,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-05 12:37:19,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-05 12:37:19,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3186274509803921) internal successors, (269), 216 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 269 transitions. [2021-11-05 12:37:19,125 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 269 transitions. Word has length 63 [2021-11-05 12:37:19,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:19,126 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 269 transitions. [2021-11-05 12:37:19,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:19,128 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 269 transitions. [2021-11-05 12:37:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-05 12:37:19,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:19,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:37:19,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 12:37:19,132 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:37:19,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:19,133 INFO L85 PathProgramCache]: Analyzing trace with hash 321872050, now seen corresponding path program 1 times [2021-11-05 12:37:19,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:19,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216973750] [2021-11-05 12:37:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:19,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:19,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:19,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216973750] [2021-11-05 12:37:19,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216973750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:19,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:19,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:37:19,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134728513] [2021-11-05 12:37:19,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:19,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:37:19,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:19,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:37:19,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:37:19,513 INFO L87 Difference]: Start difference. First operand 217 states and 269 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) [2021-11-05 12:37:19,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:19,803 INFO L93 Difference]: Finished difference Result 345 states and 424 transitions. [2021-11-05 12:37:19,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:37:19,804 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 [2021-11-05 12:37:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:19,805 INFO L225 Difference]: With dead ends: 345 [2021-11-05 12:37:19,805 INFO L226 Difference]: Without dead ends: 217 [2021-11-05 12:37:19,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 244.63ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:37:19,807 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 762 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 134.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.63ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 144.75ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:19,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 500 Invalid, 43 Unknown, 0 Unchecked, 2.63ms Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 144.75ms Time] [2021-11-05 12:37:19,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-05 12:37:19,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-05 12:37:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3088235294117647) internal successors, (267), 216 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 267 transitions. [2021-11-05 12:37:19,824 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 267 transitions. Word has length 65 [2021-11-05 12:37:19,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:19,825 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 267 transitions. [2021-11-05 12:37:19,826 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) [2021-11-05 12:37:19,826 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 267 transitions. [2021-11-05 12:37:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-05 12:37:19,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:19,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:37:19,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 12:37:19,830 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:37:19,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:19,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1147926727, now seen corresponding path program 1 times [2021-11-05 12:37:19,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:19,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289258090] [2021-11-05 12:37:19,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:19,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:20,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:20,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:20,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289258090] [2021-11-05 12:37:20,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289258090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:20,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:20,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:37:20,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066455904] [2021-11-05 12:37:20,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:20,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:37:20,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:20,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:37:20,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:37:20,343 INFO L87 Difference]: Start difference. First operand 217 states and 267 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:20,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:20,811 INFO L93 Difference]: Finished difference Result 390 states and 473 transitions. [2021-11-05 12:37:20,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:37:20,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-05 12:37:20,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:20,813 INFO L225 Difference]: With dead ends: 390 [2021-11-05 12:37:20,813 INFO L226 Difference]: Without dead ends: 386 [2021-11-05 12:37:20,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 150.96ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:37:20,814 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 279 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 346.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.20ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 382.03ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:20,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 1157 Invalid, 145 Unknown, 0 Unchecked, 4.20ms Time], IncrementalHoareTripleChecker [19 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 382.03ms Time] [2021-11-05 12:37:20,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-05 12:37:20,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 225. [2021-11-05 12:37:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 212 states have (on average 1.2971698113207548) internal successors, (275), 224 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 275 transitions. [2021-11-05 12:37:20,832 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 275 transitions. Word has length 71 [2021-11-05 12:37:20,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:20,833 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 275 transitions. [2021-11-05 12:37:20,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:20,833 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 275 transitions. [2021-11-05 12:37:20,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 12:37:20,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:20,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:37:20,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 12:37:20,835 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:37:20,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:20,835 INFO L85 PathProgramCache]: Analyzing trace with hash 52918081, now seen corresponding path program 1 times [2021-11-05 12:37:20,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:20,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496659287] [2021-11-05 12:37:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:20,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:22,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:22,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496659287] [2021-11-05 12:37:22,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496659287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:22,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:22,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:37:22,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906602659] [2021-11-05 12:37:22,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:22,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:37:22,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:22,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:37:22,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:37:22,068 INFO L87 Difference]: Start difference. First operand 225 states and 275 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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) [2021-11-05 12:37:24,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:26,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:28,256 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:30,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:32,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:35,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:35,506 INFO L93 Difference]: Finished difference Result 704 states and 856 transitions. [2021-11-05 12:37:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 12:37:35,507 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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 [2021-11-05 12:37:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:35,509 INFO L225 Difference]: With dead ends: 704 [2021-11-05 12:37:35,509 INFO L226 Difference]: Without dead ends: 533 [2021-11-05 12:37:35,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1428.25ms TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2021-11-05 12:37:35,510 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 2268 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 53 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11658.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.77ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12333.97ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:35,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2268 Valid, 1553 Invalid, 703 Unknown, 0 Unchecked, 14.77ms Time], IncrementalHoareTripleChecker [53 Valid, 645 Invalid, 5 Unknown, 0 Unchecked, 12333.97ms Time] [2021-11-05 12:37:35,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-11-05 12:37:35,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 372. [2021-11-05 12:37:35,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 359 states have (on average 1.2924791086350975) internal successors, (464), 371 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:35,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 464 transitions. [2021-11-05 12:37:35,519 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 464 transitions. Word has length 75 [2021-11-05 12:37:35,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:35,519 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 464 transitions. [2021-11-05 12:37:35,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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) [2021-11-05 12:37:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 464 transitions. [2021-11-05 12:37:35,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-05 12:37:35,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:35,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:37:35,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 12:37:35,521 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:37:35,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:35,521 INFO L85 PathProgramCache]: Analyzing trace with hash -599539449, now seen corresponding path program 1 times [2021-11-05 12:37:35,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:35,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102620464] [2021-11-05 12:37:35,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:35,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:37,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:37,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102620464] [2021-11-05 12:37:37,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102620464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:37,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:37,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:37:37,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756331748] [2021-11-05 12:37:37,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:37,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:37:37,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:37,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:37:37,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:37:37,043 INFO L87 Difference]: Start difference. First operand 372 states and 464 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 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) [2021-11-05 12:37:39,087 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 [] [2021-11-05 12:37:41,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:43,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:45,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:45,885 INFO L93 Difference]: Finished difference Result 827 states and 1035 transitions. [2021-11-05 12:37:45,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 12:37:45,886 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 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 [2021-11-05 12:37:45,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:45,888 INFO L225 Difference]: With dead ends: 827 [2021-11-05 12:37:45,888 INFO L226 Difference]: Without dead ends: 613 [2021-11-05 12:37:45,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 897.34ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:37:45,889 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 1254 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 24 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7852.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.54ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8352.11ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:45,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 1839 Invalid, 654 Unknown, 0 Unchecked, 11.54ms Time], IncrementalHoareTripleChecker [24 Valid, 627 Invalid, 3 Unknown, 0 Unchecked, 8352.11ms Time] [2021-11-05 12:37:45,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-11-05 12:37:45,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 479. [2021-11-05 12:37:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 466 states have (on average 1.2896995708154506) internal successors, (601), 478 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 601 transitions. [2021-11-05 12:37:45,904 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 601 transitions. Word has length 78 [2021-11-05 12:37:45,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:45,905 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 601 transitions. [2021-11-05 12:37:45,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 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) [2021-11-05 12:37:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 601 transitions. [2021-11-05 12:37:45,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-05 12:37:45,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:45,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:37:45,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 12:37:45,908 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:37:45,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:45,908 INFO L85 PathProgramCache]: Analyzing trace with hash -733552955, now seen corresponding path program 1 times [2021-11-05 12:37:45,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:45,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423276723] [2021-11-05 12:37:45,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:45,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:46,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:46,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423276723] [2021-11-05 12:37:46,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423276723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:46,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:46,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:37:46,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572528965] [2021-11-05 12:37:46,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:46,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:37:46,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:46,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:37:46,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:37:46,116 INFO L87 Difference]: Start difference. First operand 479 states and 601 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:46,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:46,400 INFO L93 Difference]: Finished difference Result 962 states and 1219 transitions. [2021-11-05 12:37:46,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:37:46,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-05 12:37:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:46,404 INFO L225 Difference]: With dead ends: 962 [2021-11-05 12:37:46,404 INFO L226 Difference]: Without dead ends: 559 [2021-11-05 12:37:46,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:37:46,407 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 89 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 220.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.59ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 237.18ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:46,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 750 Invalid, 80 Unknown, 0 Unchecked, 1.59ms Time], IncrementalHoareTripleChecker [13 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 237.18ms Time] [2021-11-05 12:37:46,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-11-05 12:37:46,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 495. [2021-11-05 12:37:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 482 states have (on average 1.2759336099585061) internal successors, (615), 494 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:46,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 615 transitions. [2021-11-05 12:37:46,428 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 615 transitions. Word has length 78 [2021-11-05 12:37:46,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:46,429 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 615 transitions. [2021-11-05 12:37:46,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:46,429 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 615 transitions. [2021-11-05 12:37:46,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 12:37:46,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:46,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:37:46,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 12:37:46,431 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:37:46,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:46,432 INFO L85 PathProgramCache]: Analyzing trace with hash -544811959, now seen corresponding path program 1 times [2021-11-05 12:37:46,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:46,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867067863] [2021-11-05 12:37:46,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:46,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:47,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:47,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:47,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867067863] [2021-11-05 12:37:47,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867067863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:47,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:47,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:37:47,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797852909] [2021-11-05 12:37:47,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:47,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:37:47,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:47,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:37:47,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:37:47,095 INFO L87 Difference]: Start difference. First operand 495 states and 615 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:47,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:47,810 INFO L93 Difference]: Finished difference Result 1075 states and 1328 transitions. [2021-11-05 12:37:47,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:37:47,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-05 12:37:47,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:47,812 INFO L225 Difference]: With dead ends: 1075 [2021-11-05 12:37:47,813 INFO L226 Difference]: Without dead ends: 662 [2021-11-05 12:37:47,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 261.97ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:37:47,814 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 155 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 522.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.79ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 554.61ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:47,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 1979 Invalid, 196 Unknown, 0 Unchecked, 2.79ms Time], IncrementalHoareTripleChecker [22 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 554.61ms Time] [2021-11-05 12:37:47,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-11-05 12:37:47,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 495. [2021-11-05 12:37:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 482 states have (on average 1.2697095435684647) internal successors, (612), 494 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:47,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 612 transitions. [2021-11-05 12:37:47,826 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 612 transitions. Word has length 79 [2021-11-05 12:37:47,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:47,826 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 612 transitions. [2021-11-05 12:37:47,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:47,826 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 612 transitions. [2021-11-05 12:37:47,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-05 12:37:47,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:47,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:37:47,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 12:37:47,828 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:37:47,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:47,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1220520658, now seen corresponding path program 1 times [2021-11-05 12:37:47,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:47,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134167843] [2021-11-05 12:37:47,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:47,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:48,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:48,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134167843] [2021-11-05 12:37:48,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134167843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:48,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:48,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:37:48,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54133204] [2021-11-05 12:37:48,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:48,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:37:48,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:48,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:37:48,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:37:48,388 INFO L87 Difference]: Start difference. First operand 495 states and 612 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:50,433 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 [] [2021-11-05 12:37:51,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:51,446 INFO L93 Difference]: Finished difference Result 1037 states and 1282 transitions. [2021-11-05 12:37:51,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:37:51,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-05 12:37:51,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:51,448 INFO L225 Difference]: With dead ends: 1037 [2021-11-05 12:37:51,448 INFO L226 Difference]: Without dead ends: 633 [2021-11-05 12:37:51,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 83.90ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:37:51,449 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 386 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2663.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.41ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2993.44ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:51,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 885 Invalid, 205 Unknown, 0 Unchecked, 3.41ms Time], IncrementalHoareTripleChecker [20 Valid, 184 Invalid, 1 Unknown, 0 Unchecked, 2993.44ms Time] [2021-11-05 12:37:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-11-05 12:37:51,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 495. [2021-11-05 12:37:51,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 482 states have (on average 1.2531120331950207) internal successors, (604), 494 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 604 transitions. [2021-11-05 12:37:51,464 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 604 transitions. Word has length 81 [2021-11-05 12:37:51,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:51,464 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 604 transitions. [2021-11-05 12:37:51,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:51,464 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 604 transitions. [2021-11-05 12:37:51,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-05 12:37:51,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:51,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:37:51,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 12:37:51,466 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:37:51,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:51,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1858292912, now seen corresponding path program 1 times [2021-11-05 12:37:51,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:51,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248625025] [2021-11-05 12:37:51,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:51,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:52,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:52,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248625025] [2021-11-05 12:37:52,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248625025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:52,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:52,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:37:52,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52651720] [2021-11-05 12:37:52,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:52,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:37:52,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:52,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:37:52,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:37:52,128 INFO L87 Difference]: Start difference. First operand 495 states and 604 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) [2021-11-05 12:37:54,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:56,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:58,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:00,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:38:00,114 INFO L93 Difference]: Finished difference Result 728 states and 869 transitions. [2021-11-05 12:38:00,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 12:38:00,115 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 [2021-11-05 12:38:00,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:38:00,117 INFO L225 Difference]: With dead ends: 728 [2021-11-05 12:38:00,117 INFO L226 Difference]: Without dead ends: 601 [2021-11-05 12:38:00,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 341.06ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:38:00,118 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 637 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7282.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.88ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7784.43ms IncrementalHoareTripleChecker+Time [2021-11-05 12:38:00,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 1058 Invalid, 401 Unknown, 0 Unchecked, 5.88ms Time], IncrementalHoareTripleChecker [15 Valid, 383 Invalid, 3 Unknown, 0 Unchecked, 7784.43ms Time] [2021-11-05 12:38:00,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-11-05 12:38:00,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 443. [2021-11-05 12:38:00,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 430 states have (on average 1.2465116279069768) internal successors, (536), 442 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:00,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 536 transitions. [2021-11-05 12:38:00,129 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 536 transitions. Word has length 81 [2021-11-05 12:38:00,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:38:00,130 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 536 transitions. [2021-11-05 12:38:00,130 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) [2021-11-05 12:38:00,130 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 536 transitions. [2021-11-05 12:38:00,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 12:38:00,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:38:00,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:38:00,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 12:38:00,131 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:38:00,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:38:00,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2017431216, now seen corresponding path program 1 times [2021-11-05 12:38:00,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:38:00,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741542171] [2021-11-05 12:38:00,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:38:00,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:38:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:38:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:38:00,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:38:00,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741542171] [2021-11-05 12:38:00,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741542171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:38:00,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:38:00,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:38:00,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604284963] [2021-11-05 12:38:00,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:38:00,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:38:00,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:38:00,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:38:00,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:38:00,493 INFO L87 Difference]: Start difference. First operand 443 states and 536 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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) [2021-11-05 12:38:01,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:38:01,042 INFO L93 Difference]: Finished difference Result 679 states and 803 transitions. [2021-11-05 12:38:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:38:01,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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 [2021-11-05 12:38:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:38:01,045 INFO L225 Difference]: With dead ends: 679 [2021-11-05 12:38:01,045 INFO L226 Difference]: Without dead ends: 675 [2021-11-05 12:38:01,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 171.27ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:38:01,045 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 245 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 412.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.08ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 442.72ms IncrementalHoareTripleChecker+Time [2021-11-05 12:38:01,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1103 Invalid, 145 Unknown, 0 Unchecked, 3.08ms Time], IncrementalHoareTripleChecker [19 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 442.72ms Time] [2021-11-05 12:38:01,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-11-05 12:38:01,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 455. [2021-11-05 12:38:01,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 442 states have (on average 1.239819004524887) internal successors, (548), 454 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 548 transitions. [2021-11-05 12:38:01,059 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 548 transitions. Word has length 82 [2021-11-05 12:38:01,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:38:01,059 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 548 transitions. [2021-11-05 12:38:01,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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) [2021-11-05 12:38:01,059 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 548 transitions. [2021-11-05 12:38:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 12:38:01,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:38:01,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:38:01,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 12:38:01,060 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:38:01,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:38:01,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1022528614, now seen corresponding path program 1 times [2021-11-05 12:38:01,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:38:01,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673707929] [2021-11-05 12:38:01,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:38:01,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:38:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:38:02,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:38:02,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:38:02,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673707929] [2021-11-05 12:38:02,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673707929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:38:02,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:38:02,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:38:02,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150902484] [2021-11-05 12:38:02,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:38:02,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:38:02,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:38:02,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:38:02,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:38:02,065 INFO L87 Difference]: Start difference. First operand 455 states and 548 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 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) [2021-11-05 12:38:04,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:06,292 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:08,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:10,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:13,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:38:13,307 INFO L93 Difference]: Finished difference Result 1171 states and 1420 transitions. [2021-11-05 12:38:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:38:13,308 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 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 [2021-11-05 12:38:13,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:38:13,310 INFO L225 Difference]: With dead ends: 1171 [2021-11-05 12:38:13,310 INFO L226 Difference]: Without dead ends: 849 [2021-11-05 12:38:13,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1072.14ms TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2021-11-05 12:38:13,312 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 1492 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 50 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9740.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.78ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10452.36ms IncrementalHoareTripleChecker+Time [2021-11-05 12:38:13,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1492 Valid, 1520 Invalid, 613 Unknown, 0 Unchecked, 8.78ms Time], IncrementalHoareTripleChecker [50 Valid, 559 Invalid, 4 Unknown, 0 Unchecked, 10452.36ms Time] [2021-11-05 12:38:13,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-05 12:38:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 684. [2021-11-05 12:38:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 671 states have (on average 1.247391952309985) internal successors, (837), 683 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:13,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 837 transitions. [2021-11-05 12:38:13,330 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 837 transitions. Word has length 86 [2021-11-05 12:38:13,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:38:13,330 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 837 transitions. [2021-11-05 12:38:13,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 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) [2021-11-05 12:38:13,331 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 837 transitions. [2021-11-05 12:38:13,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 12:38:13,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:38:13,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:38:13,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 12:38:13,332 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:38:13,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:38:13,333 INFO L85 PathProgramCache]: Analyzing trace with hash 593301109, now seen corresponding path program 1 times [2021-11-05 12:38:13,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:38:13,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392135892] [2021-11-05 12:38:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:38:13,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:38:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:38:13,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:38:13,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:38:13,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392135892] [2021-11-05 12:38:13,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392135892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:38:13,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:38:13,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:38:13,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318338010] [2021-11-05 12:38:13,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:38:13,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:38:13,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:38:13,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:38:13,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:38:13,679 INFO L87 Difference]: Start difference. First operand 684 states and 837 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 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) [2021-11-05 12:38:13,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:38:13,874 INFO L93 Difference]: Finished difference Result 1134 states and 1378 transitions. [2021-11-05 12:38:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:38:13,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 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 [2021-11-05 12:38:13,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:38:13,877 INFO L225 Difference]: With dead ends: 1134 [2021-11-05 12:38:13,877 INFO L226 Difference]: Without dead ends: 981 [2021-11-05 12:38:13,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 193.31ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:38:13,878 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 298 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.14ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.91ms IncrementalHoareTripleChecker+Time [2021-11-05 12:38:13,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 1283 Invalid, 24 Unknown, 0 Unchecked, 1.14ms Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 72.91ms Time] [2021-11-05 12:38:13,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2021-11-05 12:38:13,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 874. [2021-11-05 12:38:13,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 861 states have (on average 1.2415795586527294) internal successors, (1069), 873 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:13,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1069 transitions. [2021-11-05 12:38:13,904 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1069 transitions. Word has length 86 [2021-11-05 12:38:13,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:38:13,904 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 1069 transitions. [2021-11-05 12:38:13,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 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) [2021-11-05 12:38:13,905 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1069 transitions. [2021-11-05 12:38:13,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 12:38:13,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:38:13,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:38:13,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 12:38:13,907 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:38:13,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:38:13,907 INFO L85 PathProgramCache]: Analyzing trace with hash 764363176, now seen corresponding path program 1 times [2021-11-05 12:38:13,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:38:13,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495889560] [2021-11-05 12:38:13,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:38:13,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:38:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:38:14,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:38:14,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:38:14,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495889560] [2021-11-05 12:38:14,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495889560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:38:14,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:38:14,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:38:14,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584912179] [2021-11-05 12:38:14,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:38:14,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:38:14,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:38:14,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:38:14,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:38:14,520 INFO L87 Difference]: Start difference. First operand 874 states and 1069 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 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) [2021-11-05 12:38:16,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:18,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:20,868 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 [] [2021-11-05 12:38:22,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:38:22,481 INFO L93 Difference]: Finished difference Result 2160 states and 2653 transitions. [2021-11-05 12:38:22,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:38:22,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 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 [2021-11-05 12:38:22,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:38:22,485 INFO L225 Difference]: With dead ends: 2160 [2021-11-05 12:38:22,485 INFO L226 Difference]: Without dead ends: 1393 [2021-11-05 12:38:22,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 345.92ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:38:22,487 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 373 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 32 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7178.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.11ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7677.02ms IncrementalHoareTripleChecker+Time [2021-11-05 12:38:22,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 1061 Invalid, 409 Unknown, 0 Unchecked, 5.11ms Time], IncrementalHoareTripleChecker [32 Valid, 374 Invalid, 3 Unknown, 0 Unchecked, 7677.02ms Time] [2021-11-05 12:38:22,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-11-05 12:38:22,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 917. [2021-11-05 12:38:22,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 904 states have (on average 1.2444690265486726) internal successors, (1125), 916 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:22,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1125 transitions. [2021-11-05 12:38:22,513 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1125 transitions. Word has length 86 [2021-11-05 12:38:22,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:38:22,514 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 1125 transitions. [2021-11-05 12:38:22,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 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) [2021-11-05 12:38:22,514 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1125 transitions. [2021-11-05 12:38:22,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 12:38:22,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:38:22,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:38:22,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 12:38:22,515 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:38:22,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:38:22,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1444421546, now seen corresponding path program 1 times [2021-11-05 12:38:22,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:38:22,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779755308] [2021-11-05 12:38:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:38:22,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:38:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:38:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:38:23,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:38:23,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779755308] [2021-11-05 12:38:23,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779755308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:38:23,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:38:23,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:38:23,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119241884] [2021-11-05 12:38:23,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:38:23,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:38:23,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:38:23,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:38:23,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:38:23,864 INFO L87 Difference]: Start difference. First operand 917 states and 1125 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 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) [2021-11-05 12:38:25,909 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 [] [2021-11-05 12:38:28,019 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:30,174 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:32,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:39,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:38:39,267 INFO L93 Difference]: Finished difference Result 2611 states and 3127 transitions. [2021-11-05 12:38:39,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-05 12:38:39,268 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 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 [2021-11-05 12:38:39,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:38:39,277 INFO L225 Difference]: With dead ends: 2611 [2021-11-05 12:38:39,278 INFO L226 Difference]: Without dead ends: 2457 [2021-11-05 12:38:39,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 4032.09ms TimeCoverageRelationStatistics Valid=764, Invalid=2776, Unknown=0, NotChecked=0, Total=3540 [2021-11-05 12:38:39,283 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 3019 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 69 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10899.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3019 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.13ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11662.62ms IncrementalHoareTripleChecker+Time [2021-11-05 12:38:39,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3019 Valid, 2058 Invalid, 917 Unknown, 0 Unchecked, 15.13ms Time], IncrementalHoareTripleChecker [69 Valid, 844 Invalid, 4 Unknown, 0 Unchecked, 11662.62ms Time] [2021-11-05 12:38:39,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2021-11-05 12:38:39,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 945. [2021-11-05 12:38:39,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 932 states have (on average 1.2414163090128756) internal successors, (1157), 944 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:39,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1157 transitions. [2021-11-05 12:38:39,336 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1157 transitions. Word has length 86 [2021-11-05 12:38:39,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:38:39,336 INFO L470 AbstractCegarLoop]: Abstraction has 945 states and 1157 transitions. [2021-11-05 12:38:39,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 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) [2021-11-05 12:38:39,337 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1157 transitions. [2021-11-05 12:38:39,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-05 12:38:39,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:38:39,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:38:39,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 12:38:39,338 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:38:39,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:38:39,339 INFO L85 PathProgramCache]: Analyzing trace with hash 466581414, now seen corresponding path program 1 times [2021-11-05 12:38:39,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:38:39,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250679872] [2021-11-05 12:38:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:38:39,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:38:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:38:40,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:38:40,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:38:40,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250679872] [2021-11-05 12:38:40,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250679872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:38:40,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:38:40,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:38:40,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168812251] [2021-11-05 12:38:40,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:38:40,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:38:40,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:38:40,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:38:40,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:38:40,440 INFO L87 Difference]: Start difference. First operand 945 states and 1157 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 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) [2021-11-05 12:38:42,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:44,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:46,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:49,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:38:49,784 INFO L93 Difference]: Finished difference Result 1984 states and 2391 transitions. [2021-11-05 12:38:49,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 12:38:49,784 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 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 [2021-11-05 12:38:49,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:38:49,789 INFO L225 Difference]: With dead ends: 1984 [2021-11-05 12:38:49,789 INFO L226 Difference]: Without dead ends: 1802 [2021-11-05 12:38:49,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1284.21ms TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2021-11-05 12:38:49,792 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 2532 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 41 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7894.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2532 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.70ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8369.91ms IncrementalHoareTripleChecker+Time [2021-11-05 12:38:49,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2532 Valid, 1737 Invalid, 663 Unknown, 0 Unchecked, 9.70ms Time], IncrementalHoareTripleChecker [41 Valid, 619 Invalid, 3 Unknown, 0 Unchecked, 8369.91ms Time] [2021-11-05 12:38:49,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2021-11-05 12:38:49,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1039. [2021-11-05 12:38:49,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1026 states have (on average 1.2387914230019492) internal successors, (1271), 1038 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:49,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1271 transitions. [2021-11-05 12:38:49,829 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1271 transitions. Word has length 87 [2021-11-05 12:38:49,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:38:49,831 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 1271 transitions. [2021-11-05 12:38:49,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 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) [2021-11-05 12:38:49,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1271 transitions. [2021-11-05 12:38:49,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-05 12:38:49,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:38:49,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:38:49,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 12:38:49,833 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:38:49,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:38:49,833 INFO L85 PathProgramCache]: Analyzing trace with hash 600594920, now seen corresponding path program 1 times [2021-11-05 12:38:49,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:38:49,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057168734] [2021-11-05 12:38:49,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:38:49,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:38:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:38:53,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:38:53,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:38:53,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057168734] [2021-11-05 12:38:53,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057168734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:38:53,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:38:53,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 12:38:53,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076503124] [2021-11-05 12:38:53,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:38:53,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:38:53,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:38:53,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:38:53,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:38:53,116 INFO L87 Difference]: Start difference. First operand 1039 states and 1271 transitions. Second operand has 16 states, 16 states have (on average 5.4375) internal successors, (87), 16 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) [2021-11-05 12:38:55,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:57,341 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:59,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:01,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:03,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:06,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:08,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:14,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:39:14,794 INFO L93 Difference]: Finished difference Result 1522 states and 1817 transitions. [2021-11-05 12:39:14,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-05 12:39:14,795 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.4375) internal successors, (87), 16 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 [2021-11-05 12:39:14,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:39:14,799 INFO L225 Difference]: With dead ends: 1522 [2021-11-05 12:39:14,799 INFO L226 Difference]: Without dead ends: 1520 [2021-11-05 12:39:14,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 3655.02ms TimeCoverageRelationStatistics Valid=482, Invalid=1240, Unknown=0, NotChecked=0, Total=1722 [2021-11-05 12:39:14,800 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 3289 mSDsluCounter, 2007 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 59 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17305.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3289 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.31ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18760.40ms IncrementalHoareTripleChecker+Time [2021-11-05 12:39:14,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3289 Valid, 2197 Invalid, 1100 Unknown, 0 Unchecked, 17.31ms Time], IncrementalHoareTripleChecker [59 Valid, 1034 Invalid, 7 Unknown, 0 Unchecked, 18760.40ms Time] [2021-11-05 12:39:14,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-11-05 12:39:14,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1078. [2021-11-05 12:39:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1065 states have (on average 1.2384976525821596) internal successors, (1319), 1077 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1319 transitions. [2021-11-05 12:39:14,832 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1319 transitions. Word has length 87 [2021-11-05 12:39:14,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:39:14,833 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 1319 transitions. [2021-11-05 12:39:14,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.4375) internal successors, (87), 16 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) [2021-11-05 12:39:14,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1319 transitions. [2021-11-05 12:39:14,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-05 12:39:14,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:39:14,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:39:14,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 12:39:14,835 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:39:14,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:39:14,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1451715357, now seen corresponding path program 1 times [2021-11-05 12:39:14,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:39:14,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036469670] [2021-11-05 12:39:14,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:39:14,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:39:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:39:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:39:18,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:39:18,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036469670] [2021-11-05 12:39:18,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036469670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:39:18,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:39:18,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:39:18,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025785851] [2021-11-05 12:39:18,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:39:18,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:39:18,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:39:18,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:39:18,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:39:18,337 INFO L87 Difference]: Start difference. First operand 1078 states and 1319 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) [2021-11-05 12:39:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:39:19,626 INFO L93 Difference]: Finished difference Result 2437 states and 2987 transitions. [2021-11-05 12:39:19,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:39:19,627 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 [2021-11-05 12:39:19,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:39:19,630 INFO L225 Difference]: With dead ends: 2437 [2021-11-05 12:39:19,630 INFO L226 Difference]: Without dead ends: 1518 [2021-11-05 12:39:19,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 756.56ms TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:39:19,647 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 1582 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 705.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.36ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 754.88ms IncrementalHoareTripleChecker+Time [2021-11-05 12:39:19,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1582 Valid, 922 Invalid, 252 Unknown, 0 Unchecked, 4.36ms Time], IncrementalHoareTripleChecker [18 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 754.88ms Time] [2021-11-05 12:39:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-11-05 12:39:19,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1380. [2021-11-05 12:39:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1367 states have (on average 1.2435991221653255) internal successors, (1700), 1379 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:19,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1700 transitions. [2021-11-05 12:39:19,692 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1700 transitions. Word has length 87 [2021-11-05 12:39:19,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:39:19,692 INFO L470 AbstractCegarLoop]: Abstraction has 1380 states and 1700 transitions. [2021-11-05 12:39:19,692 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) [2021-11-05 12:39:19,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1700 transitions. [2021-11-05 12:39:19,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-05 12:39:19,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:39:19,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:39:19,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 12:39:19,694 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:39:19,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:39:19,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1832928425, now seen corresponding path program 1 times [2021-11-05 12:39:19,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:39:19,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009721973] [2021-11-05 12:39:19,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:39:19,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:39:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:39:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:39:20,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:39:20,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009721973] [2021-11-05 12:39:20,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009721973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:39:20,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:39:20,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:39:20,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883750034] [2021-11-05 12:39:20,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:39:20,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:39:20,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:39:20,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:39:20,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:39:20,369 INFO L87 Difference]: Start difference. First operand 1380 states and 1700 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) [2021-11-05 12:39:21,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:39:21,014 INFO L93 Difference]: Finished difference Result 3025 states and 3702 transitions. [2021-11-05 12:39:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:39:21,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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 [2021-11-05 12:39:21,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:39:21,018 INFO L225 Difference]: With dead ends: 3025 [2021-11-05 12:39:21,018 INFO L226 Difference]: Without dead ends: 1662 [2021-11-05 12:39:21,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 250.90ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:39:21,020 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 123 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 455.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.33ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 484.21ms IncrementalHoareTripleChecker+Time [2021-11-05 12:39:21,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 1594 Invalid, 189 Unknown, 0 Unchecked, 2.33ms Time], IncrementalHoareTripleChecker [22 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 484.21ms Time] [2021-11-05 12:39:21,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2021-11-05 12:39:21,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1357. [2021-11-05 12:39:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1344 states have (on average 1.2313988095238095) internal successors, (1655), 1356 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:21,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1655 transitions. [2021-11-05 12:39:21,061 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1655 transitions. Word has length 91 [2021-11-05 12:39:21,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:39:21,061 INFO L470 AbstractCegarLoop]: Abstraction has 1357 states and 1655 transitions. [2021-11-05 12:39:21,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) [2021-11-05 12:39:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1655 transitions. [2021-11-05 12:39:21,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:39:21,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:39:21,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:39:21,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 12:39:21,063 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:39:21,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:39:21,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1541645744, now seen corresponding path program 1 times [2021-11-05 12:39:21,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:39:21,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951931725] [2021-11-05 12:39:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:39:21,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:39:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:39:21,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:39:21,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:39:21,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951931725] [2021-11-05 12:39:21,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951931725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:39:21,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:39:21,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:39:21,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422700919] [2021-11-05 12:39:21,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:39:21,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:39:21,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:39:21,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:39:21,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:39:21,494 INFO L87 Difference]: Start difference. First operand 1357 states and 1655 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:23,538 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 [] [2021-11-05 12:39:25,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:26,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:39:26,934 INFO L93 Difference]: Finished difference Result 3965 states and 4832 transitions. [2021-11-05 12:39:26,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:39:26,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:39:26,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:39:26,942 INFO L225 Difference]: With dead ends: 3965 [2021-11-05 12:39:26,942 INFO L226 Difference]: Without dead ends: 2680 [2021-11-05 12:39:26,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 117.35ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:39:26,965 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 327 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4803.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.36ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5292.56ms IncrementalHoareTripleChecker+Time [2021-11-05 12:39:26,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 758 Invalid, 274 Unknown, 0 Unchecked, 3.36ms Time], IncrementalHoareTripleChecker [17 Valid, 255 Invalid, 2 Unknown, 0 Unchecked, 5292.56ms Time] [2021-11-05 12:39:26,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2021-11-05 12:39:27,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1518. [2021-11-05 12:39:27,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1505 states have (on average 1.2325581395348837) internal successors, (1855), 1517 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 1855 transitions. [2021-11-05 12:39:27,057 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 1855 transitions. Word has length 93 [2021-11-05 12:39:27,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:39:27,058 INFO L470 AbstractCegarLoop]: Abstraction has 1518 states and 1855 transitions. [2021-11-05 12:39:27,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:27,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 1855 transitions. [2021-11-05 12:39:27,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:39:27,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:39:27,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:39:27,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 12:39:27,078 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:39:27,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:39:27,078 INFO L85 PathProgramCache]: Analyzing trace with hash -791746894, now seen corresponding path program 1 times [2021-11-05 12:39:27,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:39:27,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365653678] [2021-11-05 12:39:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:39:27,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:39:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:39:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:39:27,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:39:27,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365653678] [2021-11-05 12:39:27,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365653678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:39:27,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:39:27,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:39:27,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50443466] [2021-11-05 12:39:27,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:39:27,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:39:27,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:39:27,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:39:27,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:39:27,238 INFO L87 Difference]: Start difference. First operand 1518 states and 1855 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:27,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:39:27,494 INFO L93 Difference]: Finished difference Result 3090 states and 3763 transitions. [2021-11-05 12:39:27,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:39:27,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:39:27,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:39:27,498 INFO L225 Difference]: With dead ends: 3090 [2021-11-05 12:39:27,498 INFO L226 Difference]: Without dead ends: 1583 [2021-11-05 12:39:27,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.08ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:39:27,500 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 20 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 155.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.77ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.09ms IncrementalHoareTripleChecker+Time [2021-11-05 12:39:27,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 717 Invalid, 67 Unknown, 0 Unchecked, 0.77ms Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 167.09ms Time] [2021-11-05 12:39:27,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2021-11-05 12:39:27,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1499. [2021-11-05 12:39:27,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1486 states have (on average 1.2099596231493943) internal successors, (1798), 1498 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:27,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 1798 transitions. [2021-11-05 12:39:27,555 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 1798 transitions. Word has length 93 [2021-11-05 12:39:27,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:39:27,555 INFO L470 AbstractCegarLoop]: Abstraction has 1499 states and 1798 transitions. [2021-11-05 12:39:27,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:27,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 1798 transitions. [2021-11-05 12:39:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:39:27,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:39:27,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:39:27,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 12:39:27,557 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:39:27,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:39:27,558 INFO L85 PathProgramCache]: Analyzing trace with hash 809678318, now seen corresponding path program 1 times [2021-11-05 12:39:27,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:39:27,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722917997] [2021-11-05 12:39:27,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:39:27,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:39:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:39:27,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:39:27,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:39:27,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722917997] [2021-11-05 12:39:27,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722917997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:39:27,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:39:27,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:39:27,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494311983] [2021-11-05 12:39:27,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:39:27,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:39:27,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:39:27,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:39:27,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:39:27,729 INFO L87 Difference]: Start difference. First operand 1499 states and 1798 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:27,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:39:27,966 INFO L93 Difference]: Finished difference Result 2369 states and 2816 transitions. [2021-11-05 12:39:27,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:39:27,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:39:27,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:39:27,970 INFO L225 Difference]: With dead ends: 2369 [2021-11-05 12:39:27,970 INFO L226 Difference]: Without dead ends: 1073 [2021-11-05 12:39:27,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.65ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:39:27,972 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 98 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 168.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.07ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 179.99ms IncrementalHoareTripleChecker+Time [2021-11-05 12:39:27,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 685 Invalid, 72 Unknown, 0 Unchecked, 1.07ms Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 179.99ms Time] [2021-11-05 12:39:27,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-11-05 12:39:28,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 958. [2021-11-05 12:39:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 945 states have (on average 1.1841269841269841) internal successors, (1119), 957 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:28,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1119 transitions. [2021-11-05 12:39:28,003 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1119 transitions. Word has length 93 [2021-11-05 12:39:28,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:39:28,004 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 1119 transitions. [2021-11-05 12:39:28,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:28,004 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1119 transitions. [2021-11-05 12:39:28,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:39:28,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:39:28,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:39:28,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-05 12:39:28,006 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:39:28,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:39:28,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1013450858, now seen corresponding path program 1 times [2021-11-05 12:39:28,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:39:28,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779006838] [2021-11-05 12:39:28,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:39:28,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:39:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:39:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:39:28,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:39:28,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779006838] [2021-11-05 12:39:28,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779006838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:39:28,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:39:28,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:39:28,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045836786] [2021-11-05 12:39:28,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:39:28,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:39:28,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:39:28,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:39:28,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:39:28,787 INFO L87 Difference]: Start difference. First operand 958 states and 1119 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:30,831 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 [] [2021-11-05 12:39:32,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:35,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:37,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:39,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:42,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:39:42,324 INFO L93 Difference]: Finished difference Result 2096 states and 2466 transitions. [2021-11-05 12:39:42,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 12:39:42,324 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:39:42,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:39:42,329 INFO L225 Difference]: With dead ends: 2096 [2021-11-05 12:39:42,329 INFO L226 Difference]: Without dead ends: 1856 [2021-11-05 12:39:42,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1082.52ms TimeCoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2021-11-05 12:39:42,330 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 1659 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 43 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11794.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.24ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12640.56ms IncrementalHoareTripleChecker+Time [2021-11-05 12:39:42,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1659 Valid, 1539 Invalid, 612 Unknown, 0 Unchecked, 8.24ms Time], IncrementalHoareTripleChecker [43 Valid, 564 Invalid, 5 Unknown, 0 Unchecked, 12640.56ms Time] [2021-11-05 12:39:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2021-11-05 12:39:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1093. [2021-11-05 12:39:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1080 states have (on average 1.1870370370370371) internal successors, (1282), 1092 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:42,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1282 transitions. [2021-11-05 12:39:42,370 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1282 transitions. Word has length 93 [2021-11-05 12:39:42,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:39:42,370 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 1282 transitions. [2021-11-05 12:39:42,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:42,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1282 transitions. [2021-11-05 12:39:42,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:39:42,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:39:42,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:39:42,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-05 12:39:42,375 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:39:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:39:42,375 INFO L85 PathProgramCache]: Analyzing trace with hash -95835017, now seen corresponding path program 1 times [2021-11-05 12:39:42,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:39:42,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350679128] [2021-11-05 12:39:42,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:39:42,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:39:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:39:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:39:45,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:39:45,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350679128] [2021-11-05 12:39:45,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350679128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:39:45,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:39:45,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:39:45,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63960268] [2021-11-05 12:39:45,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:39:45,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:39:45,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:39:45,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:39:45,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:39:45,377 INFO L87 Difference]: Start difference. First operand 1093 states and 1282 transitions. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:47,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:49,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:51,832 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:53,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:56,125 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:58,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:07,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:40:07,475 INFO L93 Difference]: Finished difference Result 1756 states and 2013 transitions. [2021-11-05 12:40:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-05 12:40:07,475 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:40:07,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:40:07,479 INFO L225 Difference]: With dead ends: 1756 [2021-11-05 12:40:07,480 INFO L226 Difference]: Without dead ends: 1754 [2021-11-05 12:40:07,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 6525.24ms TimeCoverageRelationStatistics Valid=420, Invalid=1302, Unknown=0, NotChecked=0, Total=1722 [2021-11-05 12:40:07,481 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 2708 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 78 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14875.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2708 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.73ms SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16054.53ms IncrementalHoareTripleChecker+Time [2021-11-05 12:40:07,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2708 Valid, 1598 Invalid, 890 Unknown, 0 Unchecked, 12.73ms Time], IncrementalHoareTripleChecker [78 Valid, 806 Invalid, 6 Unknown, 0 Unchecked, 16054.53ms Time] [2021-11-05 12:40:07,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2021-11-05 12:40:07,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1135. [2021-11-05 12:40:07,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1122 states have (on average 1.1889483065953654) internal successors, (1334), 1134 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1334 transitions. [2021-11-05 12:40:07,523 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1334 transitions. Word has length 93 [2021-11-05 12:40:07,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:40:07,523 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 1334 transitions. [2021-11-05 12:40:07,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1334 transitions. [2021-11-05 12:40:07,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:40:07,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:40:07,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:40:07,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-05 12:40:07,525 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:40:07,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:40:07,526 INFO L85 PathProgramCache]: Analyzing trace with hash 755285420, now seen corresponding path program 1 times [2021-11-05 12:40:07,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:40:07,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680564289] [2021-11-05 12:40:07,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:40:07,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:40:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:40:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:40:11,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:40:11,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680564289] [2021-11-05 12:40:11,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680564289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:40:11,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:40:11,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:40:11,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129026206] [2021-11-05 12:40:11,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:40:11,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:40:11,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:40:11,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:40:11,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:40:11,151 INFO L87 Difference]: Start difference. First operand 1135 states and 1334 transitions. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:13,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:15,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:17,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:21,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:40:21,416 INFO L93 Difference]: Finished difference Result 2062 states and 2426 transitions. [2021-11-05 12:40:21,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-05 12:40:21,417 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:40:21,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:40:21,421 INFO L225 Difference]: With dead ends: 2062 [2021-11-05 12:40:21,421 INFO L226 Difference]: Without dead ends: 1834 [2021-11-05 12:40:21,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 2350.06ms TimeCoverageRelationStatistics Valid=346, Invalid=776, Unknown=0, NotChecked=0, Total=1122 [2021-11-05 12:40:21,423 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 2169 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 46 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7690.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2169 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.26ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8288.25ms IncrementalHoareTripleChecker+Time [2021-11-05 12:40:21,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2169 Valid, 1778 Invalid, 560 Unknown, 0 Unchecked, 10.26ms Time], IncrementalHoareTripleChecker [46 Valid, 511 Invalid, 3 Unknown, 0 Unchecked, 8288.25ms Time] [2021-11-05 12:40:21,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2021-11-05 12:40:21,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1147. [2021-11-05 12:40:21,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1134 states have (on average 1.1869488536155204) internal successors, (1346), 1146 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:21,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1346 transitions. [2021-11-05 12:40:21,493 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1346 transitions. Word has length 93 [2021-11-05 12:40:21,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:40:21,493 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 1346 transitions. [2021-11-05 12:40:21,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:21,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1346 transitions. [2021-11-05 12:40:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:40:21,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:40:21,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:40:21,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-05 12:40:21,495 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:40:21,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:40:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash -677724762, now seen corresponding path program 1 times [2021-11-05 12:40:21,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:40:21,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749064506] [2021-11-05 12:40:21,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:40:21,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:40:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:40:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:40:22,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:40:22,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749064506] [2021-11-05 12:40:22,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749064506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:40:22,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:40:22,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:40:22,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385012984] [2021-11-05 12:40:22,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:40:22,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:40:22,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:40:22,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:40:22,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:40:22,419 INFO L87 Difference]: Start difference. First operand 1147 states and 1346 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:24,468 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 [] [2021-11-05 12:40:26,627 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:28,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:31,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:33,214 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:36,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:40:36,162 INFO L93 Difference]: Finished difference Result 2161 states and 2525 transitions. [2021-11-05 12:40:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 12:40:36,175 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:40:36,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:40:36,191 INFO L225 Difference]: With dead ends: 2161 [2021-11-05 12:40:36,192 INFO L226 Difference]: Without dead ends: 1734 [2021-11-05 12:40:36,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1112.96ms TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2021-11-05 12:40:36,193 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 860 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 31 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11834.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.84ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12859.84ms IncrementalHoareTripleChecker+Time [2021-11-05 12:40:36,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 1703 Invalid, 621 Unknown, 0 Unchecked, 6.84ms Time], IncrementalHoareTripleChecker [31 Valid, 585 Invalid, 5 Unknown, 0 Unchecked, 12859.84ms Time] [2021-11-05 12:40:36,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2021-11-05 12:40:36,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1617. [2021-11-05 12:40:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1604 states have (on average 1.1832917705735662) internal successors, (1898), 1616 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 1898 transitions. [2021-11-05 12:40:36,252 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 1898 transitions. Word has length 93 [2021-11-05 12:40:36,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:40:36,253 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 1898 transitions. [2021-11-05 12:40:36,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:36,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 1898 transitions. [2021-11-05 12:40:36,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:40:36,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:40:36,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:40:36,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-05 12:40:36,257 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:40:36,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:40:36,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2333608, now seen corresponding path program 1 times [2021-11-05 12:40:36,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:40:36,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852179454] [2021-11-05 12:40:36,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:40:36,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:40:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:40:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:40:36,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:40:36,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852179454] [2021-11-05 12:40:36,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852179454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:40:36,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:40:36,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:40:36,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334565133] [2021-11-05 12:40:36,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:40:36,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:40:36,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:40:36,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:40:36,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:40:36,699 INFO L87 Difference]: Start difference. First operand 1617 states and 1898 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:38,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:40,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:41,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:40:41,927 INFO L93 Difference]: Finished difference Result 2287 states and 2701 transitions. [2021-11-05 12:40:41,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:40:41,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:40:41,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:40:41,931 INFO L225 Difference]: With dead ends: 2287 [2021-11-05 12:40:41,931 INFO L226 Difference]: Without dead ends: 1920 [2021-11-05 12:40:41,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 86.65ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:40:41,932 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 183 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4729.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.18ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5112.04ms IncrementalHoareTripleChecker+Time [2021-11-05 12:40:41,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 977 Invalid, 234 Unknown, 0 Unchecked, 3.18ms Time], IncrementalHoareTripleChecker [14 Valid, 218 Invalid, 2 Unknown, 0 Unchecked, 5112.04ms Time] [2021-11-05 12:40:41,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2021-11-05 12:40:41,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1617. [2021-11-05 12:40:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1604 states have (on average 1.1726932668329177) internal successors, (1881), 1616 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 1881 transitions. [2021-11-05 12:40:41,989 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 1881 transitions. Word has length 93 [2021-11-05 12:40:41,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:40:41,989 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 1881 transitions. [2021-11-05 12:40:41,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:41,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 1881 transitions. [2021-11-05 12:40:41,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:40:41,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:40:41,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:40:41,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-05 12:40:41,991 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:40:41,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:40:41,992 INFO L85 PathProgramCache]: Analyzing trace with hash -243995676, now seen corresponding path program 1 times [2021-11-05 12:40:41,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:40:41,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167939673] [2021-11-05 12:40:41,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:40:41,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:40:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:40:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:40:42,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:40:42,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167939673] [2021-11-05 12:40:42,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167939673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:40:42,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:40:42,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:40:42,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654294801] [2021-11-05 12:40:42,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:40:42,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:40:42,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:40:42,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:40:42,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:40:42,854 INFO L87 Difference]: Start difference. First operand 1617 states and 1881 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:45,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:47,142 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:49,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:51,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:55,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:40:55,616 INFO L93 Difference]: Finished difference Result 2061 states and 2344 transitions. [2021-11-05 12:40:55,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 12:40:55,617 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:40:55,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:40:55,620 INFO L225 Difference]: With dead ends: 2061 [2021-11-05 12:40:55,620 INFO L226 Difference]: Without dead ends: 1751 [2021-11-05 12:40:55,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1598.08ms TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2021-11-05 12:40:55,621 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 1022 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 43 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10428.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.49ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11319.47ms IncrementalHoareTripleChecker+Time [2021-11-05 12:40:55,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1022 Valid, 2199 Invalid, 768 Unknown, 0 Unchecked, 10.49ms Time], IncrementalHoareTripleChecker [43 Valid, 721 Invalid, 4 Unknown, 0 Unchecked, 11319.47ms Time] [2021-11-05 12:40:55,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2021-11-05 12:40:55,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1470. [2021-11-05 12:40:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1457 states have (on average 1.1702127659574468) internal successors, (1705), 1469 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:55,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1705 transitions. [2021-11-05 12:40:55,681 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1705 transitions. Word has length 93 [2021-11-05 12:40:55,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:40:55,681 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 1705 transitions. [2021-11-05 12:40:55,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:55,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1705 transitions. [2021-11-05 12:40:55,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:40:55,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:40:55,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:40:55,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-05 12:40:55,707 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:40:55,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:40:55,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1799236596, now seen corresponding path program 1 times [2021-11-05 12:40:55,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:40:55,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970729484] [2021-11-05 12:40:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:40:55,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:40:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:40:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:40:55,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:40:55,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970729484] [2021-11-05 12:40:55,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970729484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:40:55,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:40:55,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:40:55,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315342439] [2021-11-05 12:40:55,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:40:55,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:40:55,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:40:55,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:40:55,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:40:55,884 INFO L87 Difference]: Start difference. First operand 1470 states and 1705 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:56,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:40:56,146 INFO L93 Difference]: Finished difference Result 2933 states and 3407 transitions. [2021-11-05 12:40:56,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:40:56,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:40:56,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:40:56,149 INFO L225 Difference]: With dead ends: 2933 [2021-11-05 12:40:56,150 INFO L226 Difference]: Without dead ends: 1590 [2021-11-05 12:40:56,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:40:56,152 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 17 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 169.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 181.50ms IncrementalHoareTripleChecker+Time [2021-11-05 12:40:56,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 713 Invalid, 72 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 181.50ms Time] [2021-11-05 12:40:56,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-11-05 12:40:56,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1500. [2021-11-05 12:40:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1487 states have (on average 1.1634162743779422) internal successors, (1730), 1499 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:56,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1730 transitions. [2021-11-05 12:40:56,206 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1730 transitions. Word has length 93 [2021-11-05 12:40:56,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:40:56,206 INFO L470 AbstractCegarLoop]: Abstraction has 1500 states and 1730 transitions. [2021-11-05 12:40:56,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:56,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1730 transitions. [2021-11-05 12:40:56,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:40:56,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:40:56,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:40:56,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-05 12:40:56,208 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:40:56,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:40:56,209 INFO L85 PathProgramCache]: Analyzing trace with hash -769877298, now seen corresponding path program 1 times [2021-11-05 12:40:56,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:40:56,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204375441] [2021-11-05 12:40:56,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:40:56,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:40:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:40:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:40:56,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:40:56,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204375441] [2021-11-05 12:40:56,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204375441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:40:56,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:40:56,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:40:56,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848641165] [2021-11-05 12:40:56,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:40:56,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:40:56,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:40:56,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:40:56,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:40:56,806 INFO L87 Difference]: Start difference. First operand 1500 states and 1730 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:58,854 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 [] [2021-11-05 12:40:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:40:59,501 INFO L93 Difference]: Finished difference Result 1960 states and 2271 transitions. [2021-11-05 12:40:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:40:59,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:40:59,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:40:59,504 INFO L225 Difference]: With dead ends: 1960 [2021-11-05 12:40:59,504 INFO L226 Difference]: Without dead ends: 1470 [2021-11-05 12:40:59,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 87.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:40:59,506 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 30 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2395.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.68ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2599.09ms IncrementalHoareTripleChecker+Time [2021-11-05 12:40:59,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 597 Invalid, 126 Unknown, 0 Unchecked, 1.68ms Time], IncrementalHoareTripleChecker [11 Valid, 114 Invalid, 1 Unknown, 0 Unchecked, 2599.09ms Time] [2021-11-05 12:40:59,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-11-05 12:40:59,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1470. [2021-11-05 12:40:59,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1457 states have (on average 1.1564859299931365) internal successors, (1685), 1469 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1685 transitions. [2021-11-05 12:40:59,557 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1685 transitions. Word has length 93 [2021-11-05 12:40:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:40:59,557 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 1685 transitions. [2021-11-05 12:40:59,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1685 transitions. [2021-11-05 12:40:59,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:40:59,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:40:59,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:40:59,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-05 12:40:59,559 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:40:59,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:40:59,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1449935668, now seen corresponding path program 1 times [2021-11-05 12:40:59,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:40:59,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788876089] [2021-11-05 12:40:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:40:59,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:41:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:41:01,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:41:01,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:41:01,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788876089] [2021-11-05 12:41:01,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788876089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:41:01,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:41:01,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:41:01,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122742115] [2021-11-05 12:41:01,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:41:01,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:41:01,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:41:01,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:41:01,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:41:01,947 INFO L87 Difference]: Start difference. First operand 1470 states and 1685 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:03,993 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 [] [2021-11-05 12:41:05,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:41:05,080 INFO L93 Difference]: Finished difference Result 2822 states and 3244 transitions. [2021-11-05 12:41:05,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:41:05,081 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:41:05,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:41:05,082 INFO L225 Difference]: With dead ends: 2822 [2021-11-05 12:41:05,083 INFO L226 Difference]: Without dead ends: 1486 [2021-11-05 12:41:05,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 526.39ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:41:05,087 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 298 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2640.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.50ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2832.91ms IncrementalHoareTripleChecker+Time [2021-11-05 12:41:05,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 1280 Invalid, 221 Unknown, 0 Unchecked, 2.50ms Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 1 Unknown, 0 Unchecked, 2832.91ms Time] [2021-11-05 12:41:05,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-11-05 12:41:05,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1474. [2021-11-05 12:41:05,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1461 states have (on average 1.1560574948665299) internal successors, (1689), 1473 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 1689 transitions. [2021-11-05 12:41:05,167 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 1689 transitions. Word has length 93 [2021-11-05 12:41:05,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:41:05,167 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 1689 transitions. [2021-11-05 12:41:05,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:05,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 1689 transitions. [2021-11-05 12:41:05,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-05 12:41:05,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:41:05,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:41:05,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-05 12:41:05,169 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:41:05,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:41:05,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1636337183, now seen corresponding path program 1 times [2021-11-05 12:41:05,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:41:05,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467512320] [2021-11-05 12:41:05,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:41:05,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:41:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:41:05,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:41:05,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:41:05,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467512320] [2021-11-05 12:41:05,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467512320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:41:05,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:41:05,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:41:05,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476845516] [2021-11-05 12:41:05,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:41:05,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:41:05,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:41:05,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:41:05,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:41:05,628 INFO L87 Difference]: Start difference. First operand 1474 states and 1689 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:06,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:41:06,710 INFO L93 Difference]: Finished difference Result 2213 states and 2535 transitions. [2021-11-05 12:41:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:41:06,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-05 12:41:06,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:41:06,714 INFO L225 Difference]: With dead ends: 2213 [2021-11-05 12:41:06,714 INFO L226 Difference]: Without dead ends: 2209 [2021-11-05 12:41:06,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 389.57ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:41:06,715 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 252 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 737.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.08ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 785.40ms IncrementalHoareTripleChecker+Time [2021-11-05 12:41:06,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 1728 Invalid, 305 Unknown, 0 Unchecked, 4.08ms Time], IncrementalHoareTripleChecker [51 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 785.40ms Time] [2021-11-05 12:41:06,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2021-11-05 12:41:06,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 1528. [2021-11-05 12:41:06,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1515 states have (on average 1.1504950495049504) internal successors, (1743), 1527 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:06,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 1743 transitions. [2021-11-05 12:41:06,772 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 1743 transitions. Word has length 95 [2021-11-05 12:41:06,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:41:06,772 INFO L470 AbstractCegarLoop]: Abstraction has 1528 states and 1743 transitions. [2021-11-05 12:41:06,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:06,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 1743 transitions. [2021-11-05 12:41:06,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-05 12:41:06,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:41:06,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:41:06,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-05 12:41:06,774 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:41:06,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:41:06,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1849283487, now seen corresponding path program 1 times [2021-11-05 12:41:06,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:41:06,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447159029] [2021-11-05 12:41:06,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:41:06,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:41:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:41:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:41:07,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:41:07,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447159029] [2021-11-05 12:41:07,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447159029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:41:07,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:41:07,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:41:07,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004451771] [2021-11-05 12:41:07,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:41:07,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:41:07,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:41:07,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:41:07,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:41:07,843 INFO L87 Difference]: Start difference. First operand 1528 states and 1743 transitions. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:09,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:12,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:14,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:16,438 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:18,583 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:20,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:22,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:26,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:41:26,465 INFO L93 Difference]: Finished difference Result 2083 states and 2341 transitions. [2021-11-05 12:41:26,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-05 12:41:26,466 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-05 12:41:26,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:41:26,468 INFO L225 Difference]: With dead ends: 2083 [2021-11-05 12:41:26,468 INFO L226 Difference]: Without dead ends: 1725 [2021-11-05 12:41:26,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1255.52ms TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2021-11-05 12:41:26,469 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 1023 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 37 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16285.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.23ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17665.88ms IncrementalHoareTripleChecker+Time [2021-11-05 12:41:26,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1023 Valid, 1818 Invalid, 765 Unknown, 0 Unchecked, 9.23ms Time], IncrementalHoareTripleChecker [37 Valid, 721 Invalid, 7 Unknown, 0 Unchecked, 17665.88ms Time] [2021-11-05 12:41:26,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2021-11-05 12:41:26,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1524. [2021-11-05 12:41:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1511 states have (on average 1.1455989410986103) internal successors, (1731), 1523 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:26,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 1731 transitions. [2021-11-05 12:41:26,548 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 1731 transitions. Word has length 95 [2021-11-05 12:41:26,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:41:26,549 INFO L470 AbstractCegarLoop]: Abstraction has 1524 states and 1731 transitions. [2021-11-05 12:41:26,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:26,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 1731 transitions. [2021-11-05 12:41:26,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-05 12:41:26,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:41:26,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:41:26,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-05 12:41:26,550 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:41:26,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:41:26,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1136546407, now seen corresponding path program 1 times [2021-11-05 12:41:26,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:41:26,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270516141] [2021-11-05 12:41:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:41:26,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:41:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:41:27,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:41:27,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:41:27,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270516141] [2021-11-05 12:41:27,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270516141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:41:27,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:41:27,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:41:27,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019194437] [2021-11-05 12:41:27,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:41:27,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:41:27,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:41:27,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:41:27,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:41:27,149 INFO L87 Difference]: Start difference. First operand 1524 states and 1731 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:29,195 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 [] [2021-11-05 12:41:31,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:33,644 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:34,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:41:34,831 INFO L93 Difference]: Finished difference Result 1719 states and 1940 transitions. [2021-11-05 12:41:34,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:41:34,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-05 12:41:34,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:41:34,834 INFO L225 Difference]: With dead ends: 1719 [2021-11-05 12:41:34,834 INFO L226 Difference]: Without dead ends: 1587 [2021-11-05 12:41:34,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 239.49ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:41:34,835 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 570 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6897.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.77ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7507.15ms IncrementalHoareTripleChecker+Time [2021-11-05 12:41:34,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 808 Invalid, 300 Unknown, 0 Unchecked, 3.77ms Time], IncrementalHoareTripleChecker [10 Valid, 287 Invalid, 3 Unknown, 0 Unchecked, 7507.15ms Time] [2021-11-05 12:41:34,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2021-11-05 12:41:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1500. [2021-11-05 12:41:34,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1487 states have (on average 1.1398789509078682) internal successors, (1695), 1499 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:34,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1695 transitions. [2021-11-05 12:41:34,890 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1695 transitions. Word has length 96 [2021-11-05 12:41:34,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:41:34,891 INFO L470 AbstractCegarLoop]: Abstraction has 1500 states and 1695 transitions. [2021-11-05 12:41:34,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:34,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1695 transitions. [2021-11-05 12:41:34,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-05 12:41:34,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:41:34,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:41:34,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-05 12:41:34,893 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:41:34,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:41:34,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1686002742, now seen corresponding path program 1 times [2021-11-05 12:41:34,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:41:34,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300566046] [2021-11-05 12:41:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:41:34,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:41:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:41:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:41:36,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:41:36,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300566046] [2021-11-05 12:41:36,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300566046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:41:36,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:41:36,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-05 12:41:36,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840083445] [2021-11-05 12:41:36,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:41:36,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-05 12:41:36,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:41:36,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-05 12:41:36,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:41:36,943 INFO L87 Difference]: Start difference. First operand 1500 states and 1695 transitions. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:38,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:41,192 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:43,338 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:45,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:47,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:49,733 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:51,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:54,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:01,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:42:01,095 INFO L93 Difference]: Finished difference Result 2303 states and 2581 transitions. [2021-11-05 12:42:01,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-05 12:42:01,096 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-05 12:42:01,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:42:01,099 INFO L225 Difference]: With dead ends: 2303 [2021-11-05 12:42:01,099 INFO L226 Difference]: Without dead ends: 2019 [2021-11-05 12:42:01,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 3819.58ms TimeCoverageRelationStatistics Valid=380, Invalid=1026, Unknown=0, NotChecked=0, Total=1406 [2021-11-05 12:42:01,100 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 1974 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 66 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19734.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.54ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21139.57ms IncrementalHoareTripleChecker+Time [2021-11-05 12:42:01,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1974 Valid, 2420 Invalid, 1221 Unknown, 0 Unchecked, 16.54ms Time], IncrementalHoareTripleChecker [66 Valid, 1147 Invalid, 8 Unknown, 0 Unchecked, 21139.57ms Time] [2021-11-05 12:42:01,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2021-11-05 12:42:01,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 1533. [2021-11-05 12:42:01,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1520 states have (on average 1.138157894736842) internal successors, (1730), 1532 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:01,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 1730 transitions. [2021-11-05 12:42:01,156 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 1730 transitions. Word has length 96 [2021-11-05 12:42:01,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:42:01,156 INFO L470 AbstractCegarLoop]: Abstraction has 1533 states and 1730 transitions. [2021-11-05 12:42:01,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:01,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 1730 transitions. [2021-11-05 12:42:01,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-05 12:42:01,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:42:01,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:42:01,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-05 12:42:01,159 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:42:01,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:42:01,159 INFO L85 PathProgramCache]: Analyzing trace with hash -606083529, now seen corresponding path program 1 times [2021-11-05 12:42:01,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:42:01,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006786481] [2021-11-05 12:42:01,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:42:01,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:42:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:42:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:42:06,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:42:06,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006786481] [2021-11-05 12:42:06,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006786481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:42:06,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:42:06,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:42:06,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593393750] [2021-11-05 12:42:06,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:42:06,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:42:06,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:42:06,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:42:06,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:42:06,701 INFO L87 Difference]: Start difference. First operand 1533 states and 1730 transitions. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:08,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:10,888 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:13,041 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:15,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:17,343 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:19,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:21,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:25,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:42:25,200 INFO L93 Difference]: Finished difference Result 2053 states and 2284 transitions. [2021-11-05 12:42:25,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:42:25,201 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-05 12:42:25,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:42:25,203 INFO L225 Difference]: With dead ends: 2053 [2021-11-05 12:42:25,203 INFO L226 Difference]: Without dead ends: 1579 [2021-11-05 12:42:25,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1489.85ms TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-11-05 12:42:25,204 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 1043 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 15 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16362.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.36ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17532.78ms IncrementalHoareTripleChecker+Time [2021-11-05 12:42:25,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 2328 Invalid, 815 Unknown, 0 Unchecked, 12.36ms Time], IncrementalHoareTripleChecker [15 Valid, 793 Invalid, 7 Unknown, 0 Unchecked, 17532.78ms Time] [2021-11-05 12:42:25,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-11-05 12:42:25,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1155. [2021-11-05 12:42:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1142 states have (on average 1.12784588441331) internal successors, (1288), 1154 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:25,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1288 transitions. [2021-11-05 12:42:25,250 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1288 transitions. Word has length 96 [2021-11-05 12:42:25,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:42:25,250 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1288 transitions. [2021-11-05 12:42:25,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:25,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1288 transitions. [2021-11-05 12:42:25,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 12:42:25,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:42:25,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:42:25,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-05 12:42:25,252 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:42:25,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:42:25,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1330967370, now seen corresponding path program 1 times [2021-11-05 12:42:25,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:42:25,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48190056] [2021-11-05 12:42:25,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:42:25,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:42:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:42:25,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:42:25,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:42:25,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48190056] [2021-11-05 12:42:25,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48190056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:42:25,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:42:25,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:42:25,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149184752] [2021-11-05 12:42:25,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:42:25,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:42:25,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:42:25,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:42:25,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:42:25,947 INFO L87 Difference]: Start difference. First operand 1155 states and 1288 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 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) [2021-11-05 12:42:27,990 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 [] [2021-11-05 12:42:30,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:32,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:34,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:37,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:42:37,332 INFO L93 Difference]: Finished difference Result 2573 states and 2875 transitions. [2021-11-05 12:42:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 12:42:37,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 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 [2021-11-05 12:42:37,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:42:37,335 INFO L225 Difference]: With dead ends: 2573 [2021-11-05 12:42:37,335 INFO L226 Difference]: Without dead ends: 2310 [2021-11-05 12:42:37,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 730.57ms TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:42:37,336 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 1452 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 24 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9975.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.65ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10722.15ms IncrementalHoareTripleChecker+Time [2021-11-05 12:42:37,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1452 Valid, 1682 Invalid, 613 Unknown, 0 Unchecked, 9.65ms Time], IncrementalHoareTripleChecker [24 Valid, 585 Invalid, 4 Unknown, 0 Unchecked, 10722.15ms Time] [2021-11-05 12:42:37,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-11-05 12:42:37,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 1375. [2021-11-05 12:42:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1362 states have (on average 1.1255506607929515) internal successors, (1533), 1374 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:37,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1533 transitions. [2021-11-05 12:42:37,413 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1533 transitions. Word has length 98 [2021-11-05 12:42:37,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:42:37,413 INFO L470 AbstractCegarLoop]: Abstraction has 1375 states and 1533 transitions. [2021-11-05 12:42:37,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 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) [2021-11-05 12:42:37,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1533 transitions. [2021-11-05 12:42:37,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 12:42:37,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:42:37,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:42:37,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-05 12:42:37,416 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:42:37,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:42:37,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1072801932, now seen corresponding path program 1 times [2021-11-05 12:42:37,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:42:37,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807155776] [2021-11-05 12:42:37,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:42:37,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:42:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:42:38,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:42:38,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:42:38,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807155776] [2021-11-05 12:42:38,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807155776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:42:38,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:42:38,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:42:38,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020238173] [2021-11-05 12:42:38,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:42:38,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:42:38,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:42:38,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:42:38,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:42:38,438 INFO L87 Difference]: Start difference. First operand 1375 states and 1533 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 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) [2021-11-05 12:42:40,482 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 [] [2021-11-05 12:42:42,740 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:44,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:47,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:49,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:54,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:42:54,796 INFO L93 Difference]: Finished difference Result 3044 states and 3370 transitions. [2021-11-05 12:42:54,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-05 12:42:54,797 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 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 [2021-11-05 12:42:54,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:42:54,800 INFO L225 Difference]: With dead ends: 3044 [2021-11-05 12:42:54,801 INFO L226 Difference]: Without dead ends: 2816 [2021-11-05 12:42:54,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 2755.81ms TimeCoverageRelationStatistics Valid=513, Invalid=1649, Unknown=0, NotChecked=0, Total=2162 [2021-11-05 12:42:54,802 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 3069 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 68 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12848.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3069 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.27ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13783.44ms IncrementalHoareTripleChecker+Time [2021-11-05 12:42:54,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3069 Valid, 2002 Invalid, 881 Unknown, 0 Unchecked, 15.27ms Time], IncrementalHoareTripleChecker [68 Valid, 808 Invalid, 5 Unknown, 0 Unchecked, 13783.44ms Time] [2021-11-05 12:42:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-11-05 12:42:54,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 1304. [2021-11-05 12:42:54,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1291 states have (on average 1.1239349341595661) internal successors, (1451), 1303 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1451 transitions. [2021-11-05 12:42:54,887 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1451 transitions. Word has length 98 [2021-11-05 12:42:54,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:42:54,888 INFO L470 AbstractCegarLoop]: Abstraction has 1304 states and 1451 transitions. [2021-11-05 12:42:54,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 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) [2021-11-05 12:42:54,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1451 transitions. [2021-11-05 12:42:54,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 12:42:54,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:42:54,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:42:54,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-05 12:42:54,890 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:42:54,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:42:54,890 INFO L85 PathProgramCache]: Analyzing trace with hash 69565262, now seen corresponding path program 1 times [2021-11-05 12:42:54,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:42:54,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184880895] [2021-11-05 12:42:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:42:54,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:42:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:42:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:42:58,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:42:58,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184880895] [2021-11-05 12:42:58,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184880895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:42:58,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:42:58,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 12:42:58,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019712341] [2021-11-05 12:42:58,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:42:58,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:42:58,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:42:58,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:42:58,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:42:58,041 INFO L87 Difference]: Start difference. First operand 1304 states and 1451 transitions. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 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) [2021-11-05 12:43:00,200 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:02,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:04,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:06,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:08,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:11,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:17,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:43:17,318 INFO L93 Difference]: Finished difference Result 1612 states and 1781 transitions. [2021-11-05 12:43:17,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-05 12:43:17,319 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 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 [2021-11-05 12:43:17,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:43:17,320 INFO L225 Difference]: With dead ends: 1612 [2021-11-05 12:43:17,320 INFO L226 Difference]: Without dead ends: 1431 [2021-11-05 12:43:17,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 3250.56ms TimeCoverageRelationStatistics Valid=325, Invalid=1007, Unknown=0, NotChecked=0, Total=1332 [2021-11-05 12:43:17,321 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1498 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 67 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15666.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 2996 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.20ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16735.21ms IncrementalHoareTripleChecker+Time [2021-11-05 12:43:17,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 2996 Invalid, 1228 Unknown, 0 Unchecked, 16.20ms Time], IncrementalHoareTripleChecker [67 Valid, 1155 Invalid, 6 Unknown, 0 Unchecked, 16735.21ms Time] [2021-11-05 12:43:17,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2021-11-05 12:43:17,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1229. [2021-11-05 12:43:17,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1216 states have (on average 1.1233552631578947) internal successors, (1366), 1228 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:43:17,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1366 transitions. [2021-11-05 12:43:17,370 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1366 transitions. Word has length 98 [2021-11-05 12:43:17,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:43:17,371 INFO L470 AbstractCegarLoop]: Abstraction has 1229 states and 1366 transitions. [2021-11-05 12:43:17,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 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) [2021-11-05 12:43:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1366 transitions. [2021-11-05 12:43:17,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-05 12:43:17,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:43:17,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:43:17,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-05 12:43:17,372 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:43:17,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:43:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1478558085, now seen corresponding path program 1 times [2021-11-05 12:43:17,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:43:17,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883954666] [2021-11-05 12:43:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:43:17,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:43:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:43:21,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:43:21,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:43:21,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883954666] [2021-11-05 12:43:21,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883954666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:43:21,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:43:21,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:43:21,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002104319] [2021-11-05 12:43:21,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:43:21,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:43:21,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:43:21,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:43:21,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:43:21,408 INFO L87 Difference]: Start difference. First operand 1229 states and 1366 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 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) [2021-11-05 12:43:23,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:25,635 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:27,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:43:27,263 INFO L93 Difference]: Finished difference Result 1585 states and 1757 transitions. [2021-11-05 12:43:27,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:43:27,263 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 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 [2021-11-05 12:43:27,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:43:27,265 INFO L225 Difference]: With dead ends: 1585 [2021-11-05 12:43:27,265 INFO L226 Difference]: Without dead ends: 1324 [2021-11-05 12:43:27,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 588.38ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:43:27,266 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 788 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5094.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.19ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5526.43ms IncrementalHoareTripleChecker+Time [2021-11-05 12:43:27,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 1338 Invalid, 398 Unknown, 0 Unchecked, 5.19ms Time], IncrementalHoareTripleChecker [24 Valid, 372 Invalid, 2 Unknown, 0 Unchecked, 5526.43ms Time] [2021-11-05 12:43:27,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-11-05 12:43:27,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 926. [2021-11-05 12:43:27,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 913 states have (on average 1.1073384446878423) internal successors, (1011), 925 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:43:27,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1011 transitions. [2021-11-05 12:43:27,322 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1011 transitions. Word has length 99 [2021-11-05 12:43:27,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:43:27,322 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1011 transitions. [2021-11-05 12:43:27,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 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) [2021-11-05 12:43:27,322 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1011 transitions. [2021-11-05 12:43:27,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-05 12:43:27,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:43:27,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:43:27,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-05 12:43:27,324 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:43:27,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:43:27,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1329006131, now seen corresponding path program 1 times [2021-11-05 12:43:27,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:43:27,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606119262] [2021-11-05 12:43:27,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:43:27,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:43:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:43:28,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:43:28,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:43:28,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606119262] [2021-11-05 12:43:28,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606119262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:43:28,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:43:28,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:43:28,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347759695] [2021-11-05 12:43:28,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:43:28,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:43:28,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:43:28,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:43:28,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:43:28,170 INFO L87 Difference]: Start difference. First operand 926 states and 1011 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 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) [2021-11-05 12:43:30,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:32,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:34,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:36,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:38,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:43:38,942 INFO L93 Difference]: Finished difference Result 1034 states and 1119 transitions. [2021-11-05 12:43:38,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:43:38,943 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 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 [2021-11-05 12:43:38,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:43:38,944 INFO L225 Difference]: With dead ends: 1034 [2021-11-05 12:43:38,944 INFO L226 Difference]: Without dead ends: 866 [2021-11-05 12:43:38,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 743.72ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:43:38,944 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 303 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 15 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9381.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.61ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10206.40ms IncrementalHoareTripleChecker+Time [2021-11-05 12:43:38,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 1488 Invalid, 458 Unknown, 0 Unchecked, 5.61ms Time], IncrementalHoareTripleChecker [15 Valid, 439 Invalid, 4 Unknown, 0 Unchecked, 10206.40ms Time] [2021-11-05 12:43:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-11-05 12:43:38,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 812. [2021-11-05 12:43:38,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 799 states have (on average 1.1113892365456821) internal successors, (888), 811 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:43:38,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 888 transitions. [2021-11-05 12:43:38,978 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 888 transitions. Word has length 99 [2021-11-05 12:43:38,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:43:38,979 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 888 transitions. [2021-11-05 12:43:38,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 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) [2021-11-05 12:43:38,979 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 888 transitions. [2021-11-05 12:43:38,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-05 12:43:38,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:43:38,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:43:38,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-05 12:43:38,980 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:43:38,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:43:38,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1397652545, now seen corresponding path program 1 times [2021-11-05 12:43:38,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:43:38,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29574078] [2021-11-05 12:43:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:43:38,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:43:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:43:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:43:44,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:43:44,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29574078] [2021-11-05 12:43:44,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29574078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:43:44,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:43:44,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:43:44,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376746063] [2021-11-05 12:43:44,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:43:44,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:43:44,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:43:44,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:43:44,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:43:44,161 INFO L87 Difference]: Start difference. First operand 812 states and 888 transitions. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 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) [2021-11-05 12:43:46,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:48,405 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:50,556 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:52,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:54,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:43:54,912 INFO L93 Difference]: Finished difference Result 1003 states and 1097 transitions. [2021-11-05 12:43:54,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 12:43:54,913 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 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 [2021-11-05 12:43:54,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:43:54,914 INFO L225 Difference]: With dead ends: 1003 [2021-11-05 12:43:54,914 INFO L226 Difference]: Without dead ends: 651 [2021-11-05 12:43:54,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1834.42ms TimeCoverageRelationStatistics Valid=247, Invalid=509, Unknown=0, NotChecked=0, Total=756 [2021-11-05 12:43:54,915 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1900 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 96 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8874.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.11ms SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9483.52ms IncrementalHoareTripleChecker+Time [2021-11-05 12:43:54,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1900 Valid, 743 Invalid, 368 Unknown, 0 Unchecked, 5.11ms Time], IncrementalHoareTripleChecker [96 Valid, 268 Invalid, 4 Unknown, 0 Unchecked, 9483.52ms Time] [2021-11-05 12:43:54,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-11-05 12:43:54,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 611. [2021-11-05 12:43:54,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 598 states have (on average 1.105351170568562) internal successors, (661), 610 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:43:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 661 transitions. [2021-11-05 12:43:54,942 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 661 transitions. Word has length 99 [2021-11-05 12:43:54,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:43:54,942 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 661 transitions. [2021-11-05 12:43:54,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 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) [2021-11-05 12:43:54,943 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 661 transitions. [2021-11-05 12:43:54,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-05 12:43:54,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:43:54,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:43:54,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-05 12:43:54,944 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:43:54,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:43:54,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1736857598, now seen corresponding path program 1 times [2021-11-05 12:43:54,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:43:54,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118088263] [2021-11-05 12:43:54,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:43:54,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:44:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:44:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:44:04,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:44:04,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118088263] [2021-11-05 12:44:04,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118088263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:44:04,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:44:04,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-05 12:44:04,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482809011] [2021-11-05 12:44:04,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:44:04,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-05 12:44:04,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:44:04,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-05 12:44:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2021-11-05 12:44:04,891 INFO L87 Difference]: Start difference. First operand 611 states and 661 transitions. Second operand has 27 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:44:07,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:09,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:11,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:13,630 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:15,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:17,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:20,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:22,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:24,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:26,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:28,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:30,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:32,992 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:35,117 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:37,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:39,451 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:51,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:44:51,305 INFO L93 Difference]: Finished difference Result 1177 states and 1279 transitions. [2021-11-05 12:44:51,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-05 12:44:51,307 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-05 12:44:51,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:44:51,308 INFO L225 Difference]: With dead ends: 1177 [2021-11-05 12:44:51,308 INFO L226 Difference]: Without dead ends: 1033 [2021-11-05 12:44:51,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 8276.64ms TimeCoverageRelationStatistics Valid=608, Invalid=1648, Unknown=0, NotChecked=0, Total=2256 [2021-11-05 12:44:51,309 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 2353 mSDsluCounter, 3143 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 105 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37649.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 3449 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.23ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40424.03ms IncrementalHoareTripleChecker+Time [2021-11-05 12:44:51,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2353 Valid, 3449 Invalid, 1487 Unknown, 0 Unchecked, 20.23ms Time], IncrementalHoareTripleChecker [105 Valid, 1366 Invalid, 16 Unknown, 0 Unchecked, 40424.03ms Time] [2021-11-05 12:44:51,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-11-05 12:44:51,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 884. [2021-11-05 12:44:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 871 states have (on average 1.1090700344431688) internal successors, (966), 883 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:44:51,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 966 transitions. [2021-11-05 12:44:51,350 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 966 transitions. Word has length 101 [2021-11-05 12:44:51,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:44:51,351 INFO L470 AbstractCegarLoop]: Abstraction has 884 states and 966 transitions. [2021-11-05 12:44:51,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:44:51,351 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 966 transitions. [2021-11-05 12:44:51,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-05 12:44:51,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:44:51,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:44:51,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-05 12:44:51,352 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:44:51,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:44:51,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1314375689, now seen corresponding path program 1 times [2021-11-05 12:44:51,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:44:51,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325851457] [2021-11-05 12:44:51,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:44:51,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:44:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:44:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:44:55,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:44:55,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325851457] [2021-11-05 12:44:55,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325851457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:44:55,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:44:55,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 12:44:55,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569923078] [2021-11-05 12:44:55,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:44:55,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 12:44:55,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:44:55,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 12:44:55,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:44:55,528 INFO L87 Difference]: Start difference. First operand 884 states and 966 transitions. Second operand has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 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) [2021-11-05 12:44:57,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:59,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:45:01,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:45:03,997 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:45:06,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:45:16,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:45:16,244 INFO L93 Difference]: Finished difference Result 1591 states and 1744 transitions. [2021-11-05 12:45:16,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-05 12:45:16,244 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 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 [2021-11-05 12:45:16,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:45:16,246 INFO L225 Difference]: With dead ends: 1591 [2021-11-05 12:45:16,246 INFO L226 Difference]: Without dead ends: 1587 [2021-11-05 12:45:16,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 7087.81ms TimeCoverageRelationStatistics Valid=526, Invalid=1636, Unknown=0, NotChecked=0, Total=2162 [2021-11-05 12:45:16,247 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 1807 mSDsluCounter, 3043 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 140 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13472.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1807 SdHoareTripleChecker+Valid, 3419 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.20ms SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14400.87ms IncrementalHoareTripleChecker+Time [2021-11-05 12:45:16,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1807 Valid, 3419 Invalid, 1365 Unknown, 0 Unchecked, 19.20ms Time], IncrementalHoareTripleChecker [140 Valid, 1220 Invalid, 5 Unknown, 0 Unchecked, 14400.87ms Time] [2021-11-05 12:45:16,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2021-11-05 12:45:16,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1127. [2021-11-05 12:45:16,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1114 states have (on average 1.1166965888689409) internal successors, (1244), 1126 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:45:16,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1244 transitions. [2021-11-05 12:45:16,322 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1244 transitions. Word has length 103 [2021-11-05 12:45:16,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:45:16,322 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1244 transitions. [2021-11-05 12:45:16,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 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) [2021-11-05 12:45:16,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1244 transitions. [2021-11-05 12:45:16,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-05 12:45:16,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:45:16,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:45:16,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-05 12:45:16,324 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:45:16,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:45:16,324 INFO L85 PathProgramCache]: Analyzing trace with hash 212738741, now seen corresponding path program 1 times [2021-11-05 12:45:16,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:45:16,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800589892] [2021-11-05 12:45:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:45:16,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:45:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:45:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:45:19,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:45:19,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800589892] [2021-11-05 12:45:19,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800589892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:45:19,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:45:19,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:45:19,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384829893] [2021-11-05 12:45:19,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:45:19,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:45:19,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:45:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:45:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:45:19,017 INFO L87 Difference]: Start difference. First operand 1127 states and 1244 transitions. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:45:21,061 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 [] [2021-11-05 12:45:23,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:45:25,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:45:27,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:45:29,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:45:31,819 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:45:37,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:45:37,831 INFO L93 Difference]: Finished difference Result 1645 states and 1787 transitions. [2021-11-05 12:45:37,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-05 12:45:37,832 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-05 12:45:37,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:45:37,833 INFO L225 Difference]: With dead ends: 1645 [2021-11-05 12:45:37,833 INFO L226 Difference]: Without dead ends: 1643 [2021-11-05 12:45:37,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3303.03ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-11-05 12:45:37,834 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 1629 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 39 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14746.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.19ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15828.49ms IncrementalHoareTripleChecker+Time [2021-11-05 12:45:37,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1629 Valid, 1831 Invalid, 871 Unknown, 0 Unchecked, 11.19ms Time], IncrementalHoareTripleChecker [39 Valid, 826 Invalid, 6 Unknown, 0 Unchecked, 15828.49ms Time] [2021-11-05 12:45:37,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-11-05 12:45:37,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1220. [2021-11-05 12:45:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1207 states have (on average 1.1176470588235294) internal successors, (1349), 1219 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:45:37,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1349 transitions. [2021-11-05 12:45:37,926 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1349 transitions. Word has length 105 [2021-11-05 12:45:37,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:45:37,926 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 1349 transitions. [2021-11-05 12:45:37,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:45:37,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1349 transitions. [2021-11-05 12:45:37,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-05 12:45:37,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:45:37,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:45:37,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-05 12:45:37,928 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:45:37,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:45:37,928 INFO L85 PathProgramCache]: Analyzing trace with hash 195340878, now seen corresponding path program 1 times [2021-11-05 12:45:37,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:45:37,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960538000] [2021-11-05 12:45:37,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:45:37,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:45:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:45:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:45:42,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:45:42,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960538000] [2021-11-05 12:45:42,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960538000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:45:42,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:45:42,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:45:42,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657963883] [2021-11-05 12:45:42,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:45:42,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:45:42,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:45:42,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:45:42,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:45:42,289 INFO L87 Difference]: Start difference. First operand 1220 states and 1349 transitions. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:45:44,334 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 [] [2021-11-05 12:45:46,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:45:48,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:45:50,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:45:52,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:45:55,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:45:55,249 INFO L93 Difference]: Finished difference Result 1672 states and 1856 transitions. [2021-11-05 12:45:55,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:45:55,249 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-05 12:45:55,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:45:55,251 INFO L225 Difference]: With dead ends: 1672 [2021-11-05 12:45:55,251 INFO L226 Difference]: Without dead ends: 1320 [2021-11-05 12:45:55,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1409.19ms TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2021-11-05 12:45:55,251 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 429 mSDsluCounter, 1868 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 10 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11170.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.85ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11970.09ms IncrementalHoareTripleChecker+Time [2021-11-05 12:45:55,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 2201 Invalid, 426 Unknown, 0 Unchecked, 5.85ms Time], IncrementalHoareTripleChecker [10 Valid, 411 Invalid, 5 Unknown, 0 Unchecked, 11970.09ms Time] [2021-11-05 12:45:55,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-11-05 12:45:55,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1220. [2021-11-05 12:45:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1207 states have (on average 1.1126760563380282) internal successors, (1343), 1219 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:45:55,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1343 transitions. [2021-11-05 12:45:55,317 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1343 transitions. Word has length 105 [2021-11-05 12:45:55,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:45:55,318 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 1343 transitions. [2021-11-05 12:45:55,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:45:55,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1343 transitions. [2021-11-05 12:45:55,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-05 12:45:55,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:45:55,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:45:55,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-05 12:45:55,319 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:45:55,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:45:55,320 INFO L85 PathProgramCache]: Analyzing trace with hash -948228409, now seen corresponding path program 1 times [2021-11-05 12:45:55,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:45:55,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902226794] [2021-11-05 12:45:55,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:45:55,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:45:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:45:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:45:55,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:45:55,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902226794] [2021-11-05 12:45:55,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902226794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:45:55,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:45:55,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:45:55,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202929777] [2021-11-05 12:45:55,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:45:55,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:45:55,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:45:55,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:45:55,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:45:55,968 INFO L87 Difference]: Start difference. First operand 1220 states and 1343 transitions. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:45:58,012 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 [] [2021-11-05 12:46:00,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:46:00,383 INFO L93 Difference]: Finished difference Result 1591 states and 1760 transitions. [2021-11-05 12:46:00,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:46:00,384 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-05 12:46:00,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:46:00,385 INFO L225 Difference]: With dead ends: 1591 [2021-11-05 12:46:00,385 INFO L226 Difference]: Without dead ends: 1587 [2021-11-05 12:46:00,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 884.86ms TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-05 12:46:00,386 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 570 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 81 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3436.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.54ms SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3729.72ms IncrementalHoareTripleChecker+Time [2021-11-05 12:46:00,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 2263 Invalid, 602 Unknown, 0 Unchecked, 7.54ms Time], IncrementalHoareTripleChecker [81 Valid, 520 Invalid, 1 Unknown, 0 Unchecked, 3729.72ms Time] [2021-11-05 12:46:00,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2021-11-05 12:46:00,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1197. [2021-11-05 12:46:00,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1185 states have (on average 1.109704641350211) internal successors, (1315), 1196 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:46:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1315 transitions. [2021-11-05 12:46:00,457 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1315 transitions. Word has length 107 [2021-11-05 12:46:00,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:46:00,457 INFO L470 AbstractCegarLoop]: Abstraction has 1197 states and 1315 transitions. [2021-11-05 12:46:00,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:46:00,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1315 transitions. [2021-11-05 12:46:00,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-05 12:46:00,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:46:00,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:46:00,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-05 12:46:00,459 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:46:00,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:46:00,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1150084859, now seen corresponding path program 1 times [2021-11-05 12:46:00,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:46:00,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839965064] [2021-11-05 12:46:00,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:46:00,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:46:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:46:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:46:01,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:46:01,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839965064] [2021-11-05 12:46:01,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839965064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:46:01,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:46:01,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:46:01,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320258698] [2021-11-05 12:46:01,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:46:01,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:46:01,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:46:01,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:46:01,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:46:01,649 INFO L87 Difference]: Start difference. First operand 1197 states and 1315 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) [2021-11-05 12:46:03,698 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 [] [2021-11-05 12:46:05,867 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:46:08,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:46:08,362 INFO L93 Difference]: Finished difference Result 3232 states and 3603 transitions. [2021-11-05 12:46:08,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 12:46:08,363 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 [2021-11-05 12:46:08,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:46:08,365 INFO L225 Difference]: With dead ends: 3232 [2021-11-05 12:46:08,365 INFO L226 Difference]: Without dead ends: 2806 [2021-11-05 12:46:08,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 745.21ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:46:08,366 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 779 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5516.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.87ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5921.38ms IncrementalHoareTripleChecker+Time [2021-11-05 12:46:08,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 2167 Invalid, 464 Unknown, 0 Unchecked, 7.87ms Time], IncrementalHoareTripleChecker [11 Valid, 451 Invalid, 2 Unknown, 0 Unchecked, 5921.38ms Time] [2021-11-05 12:46:08,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2021-11-05 12:46:08,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 1232. [2021-11-05 12:46:08,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1220 states have (on average 1.1057377049180328) internal successors, (1349), 1231 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:46:08,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1349 transitions. [2021-11-05 12:46:08,464 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1349 transitions. Word has length 108 [2021-11-05 12:46:08,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:46:08,465 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 1349 transitions. [2021-11-05 12:46:08,465 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) [2021-11-05 12:46:08,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1349 transitions. [2021-11-05 12:46:08,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-05 12:46:08,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:46:08,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:46:08,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-05 12:46:08,467 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:46:08,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:46:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1961551642, now seen corresponding path program 1 times [2021-11-05 12:46:08,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:46:08,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460992802] [2021-11-05 12:46:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:46:08,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:46:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:46:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:46:10,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:46:10,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460992802] [2021-11-05 12:46:10,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460992802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:46:10,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:46:10,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 12:46:10,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004878122] [2021-11-05 12:46:10,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:46:10,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 12:46:10,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:46:10,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 12:46:10,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:46:10,626 INFO L87 Difference]: Start difference. First operand 1232 states and 1349 transitions. Second operand has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:46:12,672 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 [] [2021-11-05 12:46:14,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:46:16,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:46:19,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:46:21,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:46:23,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:46:25,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:46:27,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:46:29,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:46:32,120 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:46:34,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:46:36,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:46:41,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:46:41,599 INFO L93 Difference]: Finished difference Result 1765 states and 1935 transitions. [2021-11-05 12:46:41,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 12:46:41,600 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-05 12:46:41,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:46:41,601 INFO L225 Difference]: With dead ends: 1765 [2021-11-05 12:46:41,601 INFO L226 Difference]: Without dead ends: 930 [2021-11-05 12:46:41,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 2794.16ms TimeCoverageRelationStatistics Valid=294, Invalid=762, Unknown=0, NotChecked=0, Total=1056 [2021-11-05 12:46:41,602 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 1243 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 48 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27047.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.59ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29032.41ms IncrementalHoareTripleChecker+Time [2021-11-05 12:46:41,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1243 Valid, 1846 Invalid, 1003 Unknown, 0 Unchecked, 12.59ms Time], IncrementalHoareTripleChecker [48 Valid, 943 Invalid, 12 Unknown, 0 Unchecked, 29032.41ms Time] [2021-11-05 12:46:41,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2021-11-05 12:46:41,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 852. [2021-11-05 12:46:41,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 840 states have (on average 1.0976190476190477) internal successors, (922), 851 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) [2021-11-05 12:46:41,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 922 transitions. [2021-11-05 12:46:41,650 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 922 transitions. Word has length 110 [2021-11-05 12:46:41,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:46:41,650 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 922 transitions. [2021-11-05 12:46:41,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:46:41,650 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 922 transitions. [2021-11-05 12:46:41,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-05 12:46:41,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:46:41,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:46:41,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-05 12:46:41,652 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:46:41,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:46:41,652 INFO L85 PathProgramCache]: Analyzing trace with hash -494130780, now seen corresponding path program 1 times [2021-11-05 12:46:41,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:46:41,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189991180] [2021-11-05 12:46:41,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:46:41,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:46:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:46:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:46:43,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:46:43,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189991180] [2021-11-05 12:46:43,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189991180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:46:43,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:46:43,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:46:43,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451475875] [2021-11-05 12:46:43,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:46:43,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:46:43,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:46:43,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:46:43,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:46:43,512 INFO L87 Difference]: Start difference. First operand 852 states and 922 transitions. Second operand has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:46:45,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:46:47,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:46:49,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:46:51,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:46:55,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:46:55,594 INFO L93 Difference]: Finished difference Result 1709 states and 1860 transitions. [2021-11-05 12:46:55,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-05 12:46:55,595 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-05 12:46:55,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:46:55,596 INFO L225 Difference]: With dead ends: 1709 [2021-11-05 12:46:55,596 INFO L226 Difference]: Without dead ends: 1535 [2021-11-05 12:46:55,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1797.30ms TimeCoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-11-05 12:46:55,597 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 1489 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 47 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9870.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.67ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10521.81ms IncrementalHoareTripleChecker+Time [2021-11-05 12:46:55,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 1628 Invalid, 668 Unknown, 0 Unchecked, 8.67ms Time], IncrementalHoareTripleChecker [47 Valid, 617 Invalid, 4 Unknown, 0 Unchecked, 10521.81ms Time] [2021-11-05 12:46:55,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-11-05 12:46:55,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 944. [2021-11-05 12:46:55,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 932 states have (on average 1.0879828326180256) internal successors, (1014), 943 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:46:55,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1014 transitions. [2021-11-05 12:46:55,650 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1014 transitions. Word has length 122 [2021-11-05 12:46:55,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:46:55,651 INFO L470 AbstractCegarLoop]: Abstraction has 944 states and 1014 transitions. [2021-11-05 12:46:55,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:46:55,651 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1014 transitions. [2021-11-05 12:46:55,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-05 12:46:55,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:46:55,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:46:55,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-05 12:46:55,652 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:46:55,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:46:55,652 INFO L85 PathProgramCache]: Analyzing trace with hash -70484058, now seen corresponding path program 1 times [2021-11-05 12:46:55,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:46:55,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833635727] [2021-11-05 12:46:55,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:46:55,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:46:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:46:58,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:46:58,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:46:58,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833635727] [2021-11-05 12:46:58,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833635727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:46:58,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:46:58,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-05 12:46:58,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220416369] [2021-11-05 12:46:58,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:46:58,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-05 12:46:58,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:46:58,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-05 12:46:58,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-11-05 12:46:58,102 INFO L87 Difference]: Start difference. First operand 944 states and 1014 transitions. Second operand has 21 states, 21 states have (on average 5.809523809523809) internal successors, (122), 21 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:47:00,170 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 [] [2021-11-05 12:47:02,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:04,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:06,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:08,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:10,944 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:13,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:15,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:21,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:47:21,646 INFO L93 Difference]: Finished difference Result 1612 states and 1737 transitions. [2021-11-05 12:47:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-05 12:47:21,647 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.809523809523809) internal successors, (122), 21 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-05 12:47:21,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:47:21,648 INFO L225 Difference]: With dead ends: 1612 [2021-11-05 12:47:21,648 INFO L226 Difference]: Without dead ends: 1281 [2021-11-05 12:47:21,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 3724.04ms TimeCoverageRelationStatistics Valid=425, Invalid=1135, Unknown=0, NotChecked=0, Total=1560 [2021-11-05 12:47:21,649 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 3073 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 144 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19399.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3073 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.20ms SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20829.71ms IncrementalHoareTripleChecker+Time [2021-11-05 12:47:21,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3073 Valid, 2674 Invalid, 1211 Unknown, 0 Unchecked, 17.20ms Time], IncrementalHoareTripleChecker [144 Valid, 1059 Invalid, 8 Unknown, 0 Unchecked, 20829.71ms Time] [2021-11-05 12:47:21,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-11-05 12:47:21,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1114. [2021-11-05 12:47:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1102 states have (on average 1.0907441016333939) internal successors, (1202), 1113 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:47:21,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1202 transitions. [2021-11-05 12:47:21,714 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1202 transitions. Word has length 122 [2021-11-05 12:47:21,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:47:21,714 INFO L470 AbstractCegarLoop]: Abstraction has 1114 states and 1202 transitions. [2021-11-05 12:47:21,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.809523809523809) internal successors, (122), 21 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:47:21,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1202 transitions. [2021-11-05 12:47:21,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-05 12:47:21,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:47:21,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:47:21,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-05 12:47:21,716 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:47:21,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:47:21,717 INFO L85 PathProgramCache]: Analyzing trace with hash 768549604, now seen corresponding path program 1 times [2021-11-05 12:47:21,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:47:21,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405302904] [2021-11-05 12:47:21,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:47:21,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:47:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:47:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:47:29,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:47:29,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405302904] [2021-11-05 12:47:29,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405302904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:47:29,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:47:29,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-05 12:47:29,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070820461] [2021-11-05 12:47:29,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:47:29,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-05 12:47:29,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:47:29,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-05 12:47:29,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2021-11-05 12:47:29,651 INFO L87 Difference]: Start difference. First operand 1114 states and 1202 transitions. Second operand has 23 states, 23 states have (on average 5.304347826086956) internal successors, (122), 23 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:47:31,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:34,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:36,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:38,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:40,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:42,716 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:44,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:46,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:49,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:51,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:47:53,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:08,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:48:08,089 INFO L93 Difference]: Finished difference Result 1405 states and 1501 transitions. [2021-11-05 12:48:08,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-05 12:48:08,090 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.304347826086956) internal successors, (122), 23 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-05 12:48:08,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:48:08,091 INFO L225 Difference]: With dead ends: 1405 [2021-11-05 12:48:08,091 INFO L226 Difference]: Without dead ends: 1287 [2021-11-05 12:48:08,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 10563.61ms TimeCoverageRelationStatistics Valid=726, Invalid=2136, Unknown=0, NotChecked=0, Total=2862 [2021-11-05 12:48:08,092 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 2735 mSDsluCounter, 3777 mSDsCounter, 0 mSdLazyCounter, 1806 mSolverCounterSat, 124 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27829.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 4220 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.98ms SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1806 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29727.98ms IncrementalHoareTripleChecker+Time [2021-11-05 12:48:08,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 4220 Invalid, 1941 Unknown, 0 Unchecked, 25.98ms Time], IncrementalHoareTripleChecker [124 Valid, 1806 Invalid, 11 Unknown, 0 Unchecked, 29727.98ms Time] [2021-11-05 12:48:08,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-11-05 12:48:08,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 903. [2021-11-05 12:48:08,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 891 states have (on average 1.0886644219977553) internal successors, (970), 902 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:48:08,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 970 transitions. [2021-11-05 12:48:08,159 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 970 transitions. Word has length 122 [2021-11-05 12:48:08,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:48:08,159 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 970 transitions. [2021-11-05 12:48:08,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.304347826086956) internal successors, (122), 23 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:48:08,159 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 970 transitions. [2021-11-05 12:48:08,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-05 12:48:08,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:48:08,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:48:08,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-05 12:48:08,160 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:48:08,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:48:08,161 INFO L85 PathProgramCache]: Analyzing trace with hash -2105526243, now seen corresponding path program 1 times [2021-11-05 12:48:08,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:48:08,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339692639] [2021-11-05 12:48:08,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:48:08,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:48:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:48:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:48:10,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:48:10,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339692639] [2021-11-05 12:48:10,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339692639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:48:10,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:48:10,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-05 12:48:10,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541618281] [2021-11-05 12:48:10,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:48:10,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-05 12:48:10,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:48:10,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-05 12:48:10,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:48:10,593 INFO L87 Difference]: Start difference. First operand 903 states and 970 transitions. Second operand has 18 states, 18 states have (on average 6.888888888888889) internal successors, (124), 18 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) [2021-11-05 12:48:12,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:14,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:16,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:19,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:21,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:23,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:25,499 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:27,615 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:29,763 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:31,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:34,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:36,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:38,288 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 [] [2021-11-05 12:48:43,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:48:43,162 INFO L93 Difference]: Finished difference Result 1369 states and 1465 transitions. [2021-11-05 12:48:43,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 12:48:43,162 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.888888888888889) internal successors, (124), 18 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 [2021-11-05 12:48:43,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:48:43,164 INFO L225 Difference]: With dead ends: 1369 [2021-11-05 12:48:43,164 INFO L226 Difference]: Without dead ends: 1177 [2021-11-05 12:48:43,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 2830.16ms TimeCoverageRelationStatistics Valid=358, Invalid=902, Unknown=0, NotChecked=0, Total=1260 [2021-11-05 12:48:43,164 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 2570 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 110 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28636.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2570 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.16ms SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30536.71ms IncrementalHoareTripleChecker+Time [2021-11-05 12:48:43,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2570 Valid, 2114 Invalid, 1032 Unknown, 0 Unchecked, 13.16ms Time], IncrementalHoareTripleChecker [110 Valid, 909 Invalid, 13 Unknown, 0 Unchecked, 30536.71ms Time] [2021-11-05 12:48:43,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-11-05 12:48:43,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1030. [2021-11-05 12:48:43,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 1018 states have (on average 1.0884086444007859) internal successors, (1108), 1029 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:48:43,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1108 transitions. [2021-11-05 12:48:43,224 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1108 transitions. Word has length 124 [2021-11-05 12:48:43,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:48:43,225 INFO L470 AbstractCegarLoop]: Abstraction has 1030 states and 1108 transitions. [2021-11-05 12:48:43,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.888888888888889) internal successors, (124), 18 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) [2021-11-05 12:48:43,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1108 transitions. [2021-11-05 12:48:43,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-05 12:48:43,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:48:43,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:48:43,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-05 12:48:43,226 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:48:43,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:48:43,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1046938587, now seen corresponding path program 1 times [2021-11-05 12:48:43,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:48:43,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594179258] [2021-11-05 12:48:43,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:48:43,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:48:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:48:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:48:44,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:48:44,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594179258] [2021-11-05 12:48:44,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594179258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:48:44,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:48:44,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:48:44,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73710490] [2021-11-05 12:48:44,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:48:44,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:48:44,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:48:44,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:48:44,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:48:44,780 INFO L87 Difference]: Start difference. First operand 1030 states and 1108 transitions. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2021-11-05 12:48:46,826 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 [] [2021-11-05 12:48:49,117 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:51,260 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:53,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:55,520 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:48:57,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:49:01,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:49:01,091 INFO L93 Difference]: Finished difference Result 1914 states and 2074 transitions. [2021-11-05 12:49:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-05 12:49:01,091 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 [2021-11-05 12:49:01,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:49:01,093 INFO L225 Difference]: With dead ends: 1914 [2021-11-05 12:49:01,093 INFO L226 Difference]: Without dead ends: 1664 [2021-11-05 12:49:01,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1382.56ms TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2021-11-05 12:49:01,094 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 1821 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 45 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13977.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1821 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.78ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15101.19ms IncrementalHoareTripleChecker+Time [2021-11-05 12:49:01,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1821 Valid, 1576 Invalid, 732 Unknown, 0 Unchecked, 8.78ms Time], IncrementalHoareTripleChecker [45 Valid, 681 Invalid, 6 Unknown, 0 Unchecked, 15101.19ms Time] [2021-11-05 12:49:01,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2021-11-05 12:49:01,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1128. [2021-11-05 12:49:01,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1116 states have (on average 1.0797491039426523) internal successors, (1205), 1127 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:49:01,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1205 transitions. [2021-11-05 12:49:01,163 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1205 transitions. Word has length 124 [2021-11-05 12:49:01,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:49:01,163 INFO L470 AbstractCegarLoop]: Abstraction has 1128 states and 1205 transitions. [2021-11-05 12:49:01,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2021-11-05 12:49:01,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1205 transitions. [2021-11-05 12:49:01,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-05 12:49:01,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:49:01,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:49:01,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-05 12:49:01,165 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:49:01,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:49:01,166 INFO L85 PathProgramCache]: Analyzing trace with hash 149545309, now seen corresponding path program 1 times [2021-11-05 12:49:01,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:49:01,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302457400] [2021-11-05 12:49:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:49:01,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:49:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:49:05,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:49:05,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:49:05,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302457400] [2021-11-05 12:49:05,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302457400] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:49:05,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:49:05,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 12:49:05,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385077945] [2021-11-05 12:49:05,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:49:05,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 12:49:05,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:49:05,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 12:49:05,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:49:05,356 INFO L87 Difference]: Start difference. First operand 1128 states and 1205 transitions. Second operand has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 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) [2021-11-05 12:49:07,405 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 [] [2021-11-05 12:49:09,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:49:11,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:49:13,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:49:21,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:49:21,806 INFO L93 Difference]: Finished difference Result 1451 states and 1542 transitions. [2021-11-05 12:49:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-05 12:49:21,807 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 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 [2021-11-05 12:49:21,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:49:21,808 INFO L225 Difference]: With dead ends: 1451 [2021-11-05 12:49:21,808 INFO L226 Difference]: Without dead ends: 1259 [2021-11-05 12:49:21,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 4120.76ms TimeCoverageRelationStatistics Valid=293, Invalid=897, Unknown=0, NotChecked=0, Total=1190 [2021-11-05 12:49:21,809 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1346 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 73 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12180.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 2986 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.66ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13106.90ms IncrementalHoareTripleChecker+Time [2021-11-05 12:49:21,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 2986 Invalid, 1497 Unknown, 0 Unchecked, 17.66ms Time], IncrementalHoareTripleChecker [73 Valid, 1420 Invalid, 4 Unknown, 0 Unchecked, 13106.90ms Time] [2021-11-05 12:49:21,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2021-11-05 12:49:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1056. [2021-11-05 12:49:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1044 states have (on average 1.0795019157088122) internal successors, (1127), 1055 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:49:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1127 transitions. [2021-11-05 12:49:21,881 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1127 transitions. Word has length 124 [2021-11-05 12:49:21,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:49:21,882 INFO L470 AbstractCegarLoop]: Abstraction has 1056 states and 1127 transitions. [2021-11-05 12:49:21,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 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) [2021-11-05 12:49:21,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1127 transitions. [2021-11-05 12:49:21,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-05 12:49:21,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:49:21,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:49:21,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-05 12:49:21,883 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:49:21,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:49:21,884 INFO L85 PathProgramCache]: Analyzing trace with hash -120300828, now seen corresponding path program 1 times [2021-11-05 12:49:21,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:49:21,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122621253] [2021-11-05 12:49:21,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:49:21,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:49:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:49:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:49:34,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:49:34,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122621253] [2021-11-05 12:49:34,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122621253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:49:34,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:49:34,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-05 12:49:34,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635524688] [2021-11-05 12:49:34,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:49:34,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-05 12:49:34,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:49:34,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-05 12:49:34,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2021-11-05 12:49:34,396 INFO L87 Difference]: Start difference. First operand 1056 states and 1127 transitions. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:49:36,441 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 [] [2021-11-05 12:49:38,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:49:40,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:49:42,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:49:45,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:49:51,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:49:51,377 INFO L93 Difference]: Finished difference Result 1176 states and 1258 transitions. [2021-11-05 12:49:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-05 12:49:51,378 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-05 12:49:51,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:49:51,379 INFO L225 Difference]: With dead ends: 1176 [2021-11-05 12:49:51,379 INFO L226 Difference]: Without dead ends: 1059 [2021-11-05 12:49:51,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 5395.55ms TimeCoverageRelationStatistics Valid=546, Invalid=1616, Unknown=0, NotChecked=0, Total=2162 [2021-11-05 12:49:51,380 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 2503 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 133 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12257.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2503 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.88ms SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13263.26ms IncrementalHoareTripleChecker+Time [2021-11-05 12:49:51,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2503 Valid, 1400 Invalid, 822 Unknown, 0 Unchecked, 10.88ms Time], IncrementalHoareTripleChecker [133 Valid, 684 Invalid, 5 Unknown, 0 Unchecked, 13263.26ms Time] [2021-11-05 12:49:51,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2021-11-05 12:49:51,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1037. [2021-11-05 12:49:51,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 1026 states have (on average 1.0760233918128654) internal successors, (1104), 1036 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:49:51,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1104 transitions. [2021-11-05 12:49:51,443 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1104 transitions. Word has length 125 [2021-11-05 12:49:51,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:49:51,443 INFO L470 AbstractCegarLoop]: Abstraction has 1037 states and 1104 transitions. [2021-11-05 12:49:51,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:49:51,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1104 transitions. [2021-11-05 12:49:51,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-05 12:49:51,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:49:51,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:49:51,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-05 12:49:51,445 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:49:51,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:49:51,445 INFO L85 PathProgramCache]: Analyzing trace with hash -719755921, now seen corresponding path program 1 times [2021-11-05 12:49:51,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:49:51,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120134180] [2021-11-05 12:49:51,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:49:51,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:49:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:49:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:49:51,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:49:51,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120134180] [2021-11-05 12:49:51,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120134180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:49:51,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:49:51,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:49:51,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106389087] [2021-11-05 12:49:51,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:49:51,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:49:51,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:49:51,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:49:51,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:49:51,674 INFO L87 Difference]: Start difference. First operand 1037 states and 1104 transitions. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:49:51,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:49:51,896 INFO L93 Difference]: Finished difference Result 1552 states and 1676 transitions. [2021-11-05 12:49:51,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:49:51,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-05 12:49:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:49:51,898 INFO L225 Difference]: With dead ends: 1552 [2021-11-05 12:49:51,898 INFO L226 Difference]: Without dead ends: 1384 [2021-11-05 12:49:51,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 136.18ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:49:51,899 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 319 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.93ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.86ms IncrementalHoareTripleChecker+Time [2021-11-05 12:49:51,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 1271 Invalid, 24 Unknown, 0 Unchecked, 0.93ms Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 57.86ms Time] [2021-11-05 12:49:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-11-05 12:49:51,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1169. [2021-11-05 12:49:51,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1158 states have (on average 1.0656303972366148) internal successors, (1234), 1168 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:49:51,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1234 transitions. [2021-11-05 12:49:51,979 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1234 transitions. Word has length 126 [2021-11-05 12:49:51,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:49:51,979 INFO L470 AbstractCegarLoop]: Abstraction has 1169 states and 1234 transitions. [2021-11-05 12:49:51,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:49:51,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1234 transitions. [2021-11-05 12:49:51,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-05 12:49:51,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:49:51,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:49:51,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-05 12:49:51,981 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:49:51,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:49:51,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1624365142, now seen corresponding path program 1 times [2021-11-05 12:49:51,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:49:51,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070340372] [2021-11-05 12:49:51,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:49:51,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:49:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:49:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:49:57,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:49:57,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070340372] [2021-11-05 12:49:57,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070340372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:49:57,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:49:57,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:49:57,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126333737] [2021-11-05 12:49:57,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:49:57,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:49:57,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:49:57,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:49:57,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:49:57,303 INFO L87 Difference]: Start difference. First operand 1169 states and 1234 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 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) [2021-11-05 12:49:59,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:50:01,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:50:03,639 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:50:05,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:50:05,338 INFO L93 Difference]: Finished difference Result 1304 states and 1374 transitions. [2021-11-05 12:50:05,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:50:05,339 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 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 [2021-11-05 12:50:05,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:50:05,340 INFO L225 Difference]: With dead ends: 1304 [2021-11-05 12:50:05,340 INFO L226 Difference]: Without dead ends: 1259 [2021-11-05 12:50:05,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 554.29ms TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:50:05,341 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 629 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 21 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7138.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.13ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7672.44ms IncrementalHoareTripleChecker+Time [2021-11-05 12:50:05,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 1135 Invalid, 386 Unknown, 0 Unchecked, 5.13ms Time], IncrementalHoareTripleChecker [21 Valid, 362 Invalid, 3 Unknown, 0 Unchecked, 7672.44ms Time] [2021-11-05 12:50:05,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2021-11-05 12:50:05,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1176. [2021-11-05 12:50:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1165 states have (on average 1.065236051502146) internal successors, (1241), 1175 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:50:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1241 transitions. [2021-11-05 12:50:05,423 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1241 transitions. Word has length 129 [2021-11-05 12:50:05,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:50:05,423 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 1241 transitions. [2021-11-05 12:50:05,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 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) [2021-11-05 12:50:05,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1241 transitions. [2021-11-05 12:50:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-05 12:50:05,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:50:05,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:50:05,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-05 12:50:05,425 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:50:05,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:50:05,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1609008045, now seen corresponding path program 1 times [2021-11-05 12:50:05,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:50:05,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358119550] [2021-11-05 12:50:05,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:50:05,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:50:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:50:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:50:07,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:50:07,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358119550] [2021-11-05 12:50:07,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358119550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:50:07,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:50:07,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:50:07,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33858107] [2021-11-05 12:50:07,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:50:07,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:50:07,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:50:07,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:50:07,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:50:07,344 INFO L87 Difference]: Start difference. First operand 1176 states and 1241 transitions. Second operand has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 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) [2021-11-05 12:50:09,390 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 [] [2021-11-05 12:50:11,556 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:50:13,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:50:15,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:50:18,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:50:20,120 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:50:22,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:50:24,384 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 [] [2021-11-05 12:50:28,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:50:28,906 INFO L93 Difference]: Finished difference Result 1853 states and 1976 transitions. [2021-11-05 12:50:28,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-05 12:50:28,906 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 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 [2021-11-05 12:50:28,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:50:28,908 INFO L225 Difference]: With dead ends: 1853 [2021-11-05 12:50:28,908 INFO L226 Difference]: Without dead ends: 1373 [2021-11-05 12:50:28,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 2217.67ms TimeCoverageRelationStatistics Valid=346, Invalid=844, Unknown=0, NotChecked=0, Total=1190 [2021-11-05 12:50:28,909 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 1853 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 53 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18407.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.99ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19675.76ms IncrementalHoareTripleChecker+Time [2021-11-05 12:50:28,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1853 Valid, 1890 Invalid, 875 Unknown, 0 Unchecked, 10.99ms Time], IncrementalHoareTripleChecker [53 Valid, 814 Invalid, 8 Unknown, 0 Unchecked, 19675.76ms Time] [2021-11-05 12:50:28,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2021-11-05 12:50:28,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 904. [2021-11-05 12:50:28,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 893 states have (on average 1.0627099664053752) internal successors, (949), 903 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:50:28,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 949 transitions. [2021-11-05 12:50:28,980 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 949 transitions. Word has length 129 [2021-11-05 12:50:28,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:50:28,980 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 949 transitions. [2021-11-05 12:50:28,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 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) [2021-11-05 12:50:28,980 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 949 transitions. [2021-11-05 12:50:28,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-05 12:50:28,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:50:28,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:50:28,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-05 12:50:28,982 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:50:28,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:50:28,982 INFO L85 PathProgramCache]: Analyzing trace with hash -463545121, now seen corresponding path program 1 times [2021-11-05 12:50:28,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:50:28,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817903388] [2021-11-05 12:50:28,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:50:28,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:50:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:50:30,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:50:30,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:50:30,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817903388] [2021-11-05 12:50:30,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817903388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:50:30,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:50:30,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:50:30,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74045710] [2021-11-05 12:50:30,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:50:30,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:50:30,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:50:30,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:50:30,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:50:30,662 INFO L87 Difference]: Start difference. First operand 904 states and 949 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 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) [2021-11-05 12:50:32,707 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 [] [2021-11-05 12:50:34,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:50:37,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:50:39,200 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:50:41,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:50:41,262 INFO L93 Difference]: Finished difference Result 1210 states and 1282 transitions. [2021-11-05 12:50:41,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:50:41,263 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 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 [2021-11-05 12:50:41,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:50:41,264 INFO L225 Difference]: With dead ends: 1210 [2021-11-05 12:50:41,264 INFO L226 Difference]: Without dead ends: 1031 [2021-11-05 12:50:41,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 715.18ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:50:41,265 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 480 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 17 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9375.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.01ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10078.13ms IncrementalHoareTripleChecker+Time [2021-11-05 12:50:41,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 1280 Invalid, 474 Unknown, 0 Unchecked, 5.01ms Time], IncrementalHoareTripleChecker [17 Valid, 453 Invalid, 4 Unknown, 0 Unchecked, 10078.13ms Time] [2021-11-05 12:50:41,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2021-11-05 12:50:41,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 904. [2021-11-05 12:50:41,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 893 states have (on average 1.057110862262038) internal successors, (944), 903 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:50:41,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 944 transitions. [2021-11-05 12:50:41,323 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 944 transitions. Word has length 129 [2021-11-05 12:50:41,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:50:41,324 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 944 transitions. [2021-11-05 12:50:41,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 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) [2021-11-05 12:50:41,324 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 944 transitions. [2021-11-05 12:50:41,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-05 12:50:41,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:50:41,325 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:50:41,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-05 12:50:41,325 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:50:41,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:50:41,326 INFO L85 PathProgramCache]: Analyzing trace with hash -205379683, now seen corresponding path program 1 times [2021-11-05 12:50:41,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:50:41,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082177298] [2021-11-05 12:50:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:50:41,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:50:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:50:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:50:44,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:50:44,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082177298] [2021-11-05 12:50:44,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082177298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:50:44,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:50:44,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:50:44,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777038661] [2021-11-05 12:50:44,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:50:44,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:50:44,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:50:44,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:50:44,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:50:44,822 INFO L87 Difference]: Start difference. First operand 904 states and 944 transitions. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 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) [2021-11-05 12:50:46,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:50:49,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:50:50,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:50:50,424 INFO L93 Difference]: Finished difference Result 1050 states and 1103 transitions. [2021-11-05 12:50:50,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:50:50,424 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 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 [2021-11-05 12:50:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:50:50,426 INFO L225 Difference]: With dead ends: 1050 [2021-11-05 12:50:50,426 INFO L226 Difference]: Without dead ends: 1048 [2021-11-05 12:50:50,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 437.57ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:50:50,426 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 443 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5033.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5395.60ms IncrementalHoareTripleChecker+Time [2021-11-05 12:50:50,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 899 Invalid, 333 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [4 Valid, 327 Invalid, 2 Unknown, 0 Unchecked, 5395.60ms Time] [2021-11-05 12:50:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-11-05 12:50:50,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 902. [2021-11-05 12:50:50,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 892 states have (on average 1.054932735426009) internal successors, (941), 901 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:50:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 941 transitions. [2021-11-05 12:50:50,487 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 941 transitions. Word has length 129 [2021-11-05 12:50:50,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:50:50,488 INFO L470 AbstractCegarLoop]: Abstraction has 902 states and 941 transitions. [2021-11-05 12:50:50,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 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) [2021-11-05 12:50:50,488 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 941 transitions. [2021-11-05 12:50:50,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-05 12:50:50,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:50:50,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:50:50,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-05 12:50:50,490 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:50:50,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:50:50,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1866546561, now seen corresponding path program 1 times [2021-11-05 12:50:50,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:50:50,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077975] [2021-11-05 12:50:50,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:50:50,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:50:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:50:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:50:56,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:50:56,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077975] [2021-11-05 12:50:56,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:50:56,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:50:56,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 12:50:56,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717436997] [2021-11-05 12:50:56,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:50:56,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:50:56,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:50:56,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:50:56,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:50:56,650 INFO L87 Difference]: Start difference. First operand 902 states and 941 transitions. Second operand has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:50:58,697 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 [] [2021-11-05 12:51:00,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:51:03,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:51:05,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:51:07,346 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:51:12,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:51:12,189 INFO L93 Difference]: Finished difference Result 972 states and 1011 transitions. [2021-11-05 12:51:12,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 12:51:12,189 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-05 12:51:12,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:51:12,190 INFO L225 Difference]: With dead ends: 972 [2021-11-05 12:51:12,190 INFO L226 Difference]: Without dead ends: 747 [2021-11-05 12:51:12,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 3397.56ms TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2021-11-05 12:51:12,191 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 667 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 14 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12237.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.01ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13169.48ms IncrementalHoareTripleChecker+Time [2021-11-05 12:51:12,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 1666 Invalid, 741 Unknown, 0 Unchecked, 10.01ms Time], IncrementalHoareTripleChecker [14 Valid, 722 Invalid, 5 Unknown, 0 Unchecked, 13169.48ms Time] [2021-11-05 12:51:12,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-05 12:51:12,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 735. [2021-11-05 12:51:12,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 725 states have (on average 1.0524137931034483) internal successors, (763), 734 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:51:12,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 763 transitions. [2021-11-05 12:51:12,253 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 763 transitions. Word has length 132 [2021-11-05 12:51:12,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:51:12,253 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 763 transitions. [2021-11-05 12:51:12,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:51:12,254 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 763 transitions. [2021-11-05 12:51:12,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-05 12:51:12,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:51:12,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:51:12,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-05 12:51:12,255 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 12:51:12,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:51:12,255 INFO L85 PathProgramCache]: Analyzing trace with hash 287316514, now seen corresponding path program 1 times [2021-11-05 12:51:12,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:51:12,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044601886] [2021-11-05 12:51:12,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:51:12,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:51:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:51:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:51:13,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:51:13,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044601886] [2021-11-05 12:51:13,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044601886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:51:13,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:51:13,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:51:13,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821111483] [2021-11-05 12:51:13,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:51:13,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:51:13,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:51:13,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:51:13,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:51:13,205 INFO L87 Difference]: Start difference. First operand 735 states and 763 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:51:15,252 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 [] Killed by 15