./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_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 624e111eb11fc6cb53be17248f0e61e18bd8cc958dfb511134351ecf4f085f78 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 12:52:56,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 12:52:56,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 12:52:56,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 12:52:56,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 12:52:56,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 12:52:56,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 12:52:56,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 12:52:56,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 12:52:56,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 12:52:56,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 12:52:56,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 12:52:56,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 12:52:56,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 12:52:56,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 12:52:56,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 12:52:56,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 12:52:56,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 12:52:56,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 12:52:56,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 12:52:56,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 12:52:56,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 12:52:56,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 12:52:56,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 12:52:56,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 12:52:56,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 12:52:56,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 12:52:56,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 12:52:56,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 12:52:56,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 12:52:56,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 12:52:56,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 12:52:56,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 12:52:56,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 12:52:56,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 12:52:56,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 12:52:56,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 12:52:56,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 12:52:56,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 12:52:56,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 12:52:56,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 12:52:56,410 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 12:52:56,434 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 12:52:56,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 12:52:56,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 12:52:56,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 12:52:56,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 12:52:56,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 12:52:56,436 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 12:52:56,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 12:52:56,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 12:52:56,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 12:52:56,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 12:52:56,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 12:52:56,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 12:52:56,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 12:52:56,438 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 12:52:56,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 12:52:56,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 12:52:56,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 12:52:56,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 12:52:56,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:52:56,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 12:52:56,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 12:52:56,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 12:52:56,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 12:52:56,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 12:52:56,439 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 12:52:56,439 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 12:52:56,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 12:52:56,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 12:52:56,440 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 624e111eb11fc6cb53be17248f0e61e18bd8cc958dfb511134351ecf4f085f78 [2021-11-02 12:52:56,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 12:52:56,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 12:52:56,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 12:52:56,627 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 12:52:56,628 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 12:52:56,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i [2021-11-02 12:52:56,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec5b0146/ca45f1b2a090459190c0b75c08354b39/FLAGfc6772751 [2021-11-02 12:52:57,257 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 12:52:57,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i [2021-11-02 12:52:57,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec5b0146/ca45f1b2a090459190c0b75c08354b39/FLAGfc6772751 [2021-11-02 12:52:57,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec5b0146/ca45f1b2a090459190c0b75c08354b39 [2021-11-02 12:52:57,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 12:52:57,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 12:52:57,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 12:52:57,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 12:52:57,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 12:52:57,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:52:57" (1/1) ... [2021-11-02 12:52:57,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4e348d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:57, skipping insertion in model container [2021-11-02 12:52:57,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:52:57" (1/1) ... [2021-11-02 12:52:57,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 12:52:57,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 12:52:57,707 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i[4495,4508] [2021-11-02 12:52:57,711 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i[4555,4568] [2021-11-02 12:52:57,723 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:52:57,726 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:52:58,430 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:58,433 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:58,434 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:58,435 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:58,436 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:58,445 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:58,454 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:58,459 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:58,463 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:58,746 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:52:58,749 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:52:58,750 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:52:58,750 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:52:58,751 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:52:58,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:52:58,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:52:58,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:52:58,755 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:52:58,755 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:52:58,859 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:52:58,991 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:58,992 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:59,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:52:59,105 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 12:52:59,126 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i[4495,4508] [2021-11-02 12:52:59,127 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i[4555,4568] [2021-11-02 12:52:59,128 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:52:59,129 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:52:59,160 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:59,160 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:59,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:59,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:59,162 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:59,168 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:59,168 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:59,169 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:59,169 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:59,200 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:52:59,201 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:52:59,201 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:52:59,202 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:52:59,204 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:52:59,205 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:52:59,205 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:52:59,205 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:52:59,205 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:52:59,210 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:52:59,233 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:52:59,285 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:59,285 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:59,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:52:59,476 INFO L208 MainTranslator]: Completed translation [2021-11-02 12:52:59,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:59 WrapperNode [2021-11-02 12:52:59,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 12:52:59,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 12:52:59,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 12:52:59,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 12:52:59,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:59" (1/1) ... [2021-11-02 12:52:59,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:59" (1/1) ... [2021-11-02 12:52:59,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 12:52:59,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 12:52:59,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 12:52:59,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 12:52:59,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:59" (1/1) ... [2021-11-02 12:52:59,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:59" (1/1) ... [2021-11-02 12:52:59,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:59" (1/1) ... [2021-11-02 12:52:59,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:59" (1/1) ... [2021-11-02 12:52:59,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:59" (1/1) ... [2021-11-02 12:52:59,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:59" (1/1) ... [2021-11-02 12:52:59,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:59" (1/1) ... [2021-11-02 12:52:59,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 12:52:59,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 12:52:59,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 12:52:59,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 12:52:59,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:59" (1/1) ... [2021-11-02 12:52:59,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:52:59,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:52:59,833 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) [2021-11-02 12:52:59,859 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 [2021-11-02 12:52:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 12:52:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 12:52:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 12:52:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 12:52:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 12:52:59,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 12:52:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 12:52:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 12:52:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 12:52:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 12:52:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 12:53:04,709 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 12:53:04,710 INFO L299 CfgBuilder]: Removed 87 assume(true) statements. [2021-11-02 12:53:04,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:53:04 BoogieIcfgContainer [2021-11-02 12:53:04,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 12:53:04,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 12:53:04,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 12:53:04,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 12:53:04,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:52:57" (1/3) ... [2021-11-02 12:53:04,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d7e3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:53:04, skipping insertion in model container [2021-11-02 12:53:04,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:59" (2/3) ... [2021-11-02 12:53:04,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d7e3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:53:04, skipping insertion in model container [2021-11-02 12:53:04,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:53:04" (3/3) ... [2021-11-02 12:53:04,722 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_u8_harness.i [2021-11-02 12:53:04,727 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 12:53:04,727 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-02 12:53:04,768 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 12:53:04,774 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 [2021-11-02 12:53:04,775 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-02 12:53:04,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 173 states have (on average 1.4855491329479769) internal successors, (257), 184 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:04,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 12:53:04,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:04,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:04,799 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:04,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:04,803 INFO L85 PathProgramCache]: Analyzing trace with hash -27136647, now seen corresponding path program 1 times [2021-11-02 12:53:04,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:04,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556856184] [2021-11-02 12:53:04,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:04,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:05,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:05,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556856184] [2021-11-02 12:53:05,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556856184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:05,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:05,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 12:53:05,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042851245] [2021-11-02 12:53:05,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 12:53:05,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:05,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 12:53:05,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:53:05,419 INFO L87 Difference]: Start difference. First operand has 185 states, 173 states have (on average 1.4855491329479769) internal successors, (257), 184 states have internal predecessors, (257), 0 states have call successors, (0), 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 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:07,499 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 [] [2021-11-02 12:53:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:08,453 INFO L93 Difference]: Finished difference Result 366 states and 509 transitions. [2021-11-02 12:53:08,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 12:53:08,456 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-02 12:53:08,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:08,465 INFO L225 Difference]: With dead ends: 366 [2021-11-02 12:53:08,466 INFO L226 Difference]: Without dead ends: 180 [2021-11-02 12:53:08,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:53:08,473 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2735.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.39ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2976.25ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:08,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 235 Unknown, 0 Unchecked, 3.39ms Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 1 Unknown, 0 Unchecked, 2976.25ms Time] [2021-11-02 12:53:08,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-02 12:53:08,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-11-02 12:53:08,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 169 states have (on average 1.3609467455621302) internal successors, (230), 179 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 230 transitions. [2021-11-02 12:53:08,517 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 230 transitions. Word has length 38 [2021-11-02 12:53:08,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:08,517 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 230 transitions. [2021-11-02 12:53:08,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 230 transitions. [2021-11-02 12:53:08,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 12:53:08,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:08,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:08,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 12:53:08,520 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:08,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:08,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2001073661, now seen corresponding path program 1 times [2021-11-02 12:53:08,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:08,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139368437] [2021-11-02 12:53:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:08,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:08,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:08,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:08,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139368437] [2021-11-02 12:53:08,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139368437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:08,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:08,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:53:08,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383896868] [2021-11-02 12:53:08,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:53:08,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:08,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:53:08,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:53:08,755 INFO L87 Difference]: Start difference. First operand 180 states and 230 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:10,802 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 [] [2021-11-02 12:53:12,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:12,082 INFO L93 Difference]: Finished difference Result 334 states and 426 transitions. [2021-11-02 12:53:12,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:53:12,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-02 12:53:12,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:12,084 INFO L225 Difference]: With dead ends: 334 [2021-11-02 12:53:12,086 INFO L226 Difference]: Without dead ends: 180 [2021-11-02 12:53:12,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.66ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:53:12,088 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 321 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2994.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.62ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3260.03ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:12,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 0 Invalid, 349 Unknown, 0 Unchecked, 9.62ms Time], IncrementalHoareTripleChecker [7 Valid, 341 Invalid, 1 Unknown, 0 Unchecked, 3260.03ms Time] [2021-11-02 12:53:12,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-02 12:53:12,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-11-02 12:53:12,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 169 states have (on average 1.3431952662721893) internal successors, (227), 179 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:12,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 227 transitions. [2021-11-02 12:53:12,100 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 227 transitions. Word has length 38 [2021-11-02 12:53:12,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:12,101 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 227 transitions. [2021-11-02 12:53:12,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:12,101 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 227 transitions. [2021-11-02 12:53:12,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-02 12:53:12,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:12,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:12,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 12:53:12,103 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:12,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:12,103 INFO L85 PathProgramCache]: Analyzing trace with hash -58490273, now seen corresponding path program 1 times [2021-11-02 12:53:12,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:12,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777832024] [2021-11-02 12:53:12,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:12,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:12,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:12,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:12,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777832024] [2021-11-02 12:53:12,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777832024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:12,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:12,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:53:12,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809325900] [2021-11-02 12:53:12,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:53:12,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:12,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:53:12,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:53:12,329 INFO L87 Difference]: Start difference. First operand 180 states and 227 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:14,374 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 [] [2021-11-02 12:53:16,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:16,595 INFO L93 Difference]: Finished difference Result 395 states and 506 transitions. [2021-11-02 12:53:16,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:53:16,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-02 12:53:16,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:16,597 INFO L225 Difference]: With dead ends: 395 [2021-11-02 12:53:16,597 INFO L226 Difference]: Without dead ends: 240 [2021-11-02 12:53:16,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.12ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:53:16,599 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 129 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3871.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.87ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4184.20ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:16,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 0 Invalid, 730 Unknown, 0 Unchecked, 10.87ms Time], IncrementalHoareTripleChecker [21 Valid, 708 Invalid, 1 Unknown, 0 Unchecked, 4184.20ms Time] [2021-11-02 12:53:16,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-02 12:53:16,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 192. [2021-11-02 12:53:16,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 181 states have (on average 1.3204419889502763) internal successors, (239), 191 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 239 transitions. [2021-11-02 12:53:16,608 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 239 transitions. Word has length 50 [2021-11-02 12:53:16,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:16,608 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 239 transitions. [2021-11-02 12:53:16,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:16,608 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 239 transitions. [2021-11-02 12:53:16,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-02 12:53:16,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:16,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:16,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 12:53:16,609 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:16,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:16,610 INFO L85 PathProgramCache]: Analyzing trace with hash 785515229, now seen corresponding path program 1 times [2021-11-02 12:53:16,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:16,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527254783] [2021-11-02 12:53:16,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:16,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:16,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:16,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:16,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527254783] [2021-11-02 12:53:16,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527254783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:16,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:16,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:53:16,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126220846] [2021-11-02 12:53:16,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:53:16,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:16,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:53:16,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:53:16,897 INFO L87 Difference]: Start difference. First operand 192 states and 239 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:18,942 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 [] [2021-11-02 12:53:20,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:20,450 INFO L93 Difference]: Finished difference Result 313 states and 386 transitions. [2021-11-02 12:53:20,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:53:20,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-02 12:53:20,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:20,452 INFO L225 Difference]: With dead ends: 313 [2021-11-02 12:53:20,452 INFO L226 Difference]: Without dead ends: 192 [2021-11-02 12:53:20,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 136.89ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:53:20,453 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 481 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3142.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.58ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3422.94ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:20,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 0 Invalid, 385 Unknown, 0 Unchecked, 7.58ms Time], IncrementalHoareTripleChecker [5 Valid, 379 Invalid, 1 Unknown, 0 Unchecked, 3422.94ms Time] [2021-11-02 12:53:20,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-02 12:53:20,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-11-02 12:53:20,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 181 states have (on average 1.3149171270718232) internal successors, (238), 191 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:20,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 238 transitions. [2021-11-02 12:53:20,463 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 238 transitions. Word has length 50 [2021-11-02 12:53:20,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:20,463 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 238 transitions. [2021-11-02 12:53:20,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:20,463 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 238 transitions. [2021-11-02 12:53:20,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 12:53:20,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:20,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:20,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 12:53:20,465 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:20,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:20,465 INFO L85 PathProgramCache]: Analyzing trace with hash -628747704, now seen corresponding path program 1 times [2021-11-02 12:53:20,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:20,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698712972] [2021-11-02 12:53:20,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:20,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:20,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:20,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:20,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698712972] [2021-11-02 12:53:20,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698712972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:20,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:20,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:53:20,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298203139] [2021-11-02 12:53:20,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:53:20,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:20,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:53:20,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:53:20,771 INFO L87 Difference]: Start difference. First operand 192 states and 238 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:22,817 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 [] [2021-11-02 12:53:24,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:24,599 INFO L93 Difference]: Finished difference Result 264 states and 319 transitions. [2021-11-02 12:53:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:53:24,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-02 12:53:24,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:24,601 INFO L225 Difference]: With dead ends: 264 [2021-11-02 12:53:24,601 INFO L226 Difference]: Without dead ends: 192 [2021-11-02 12:53:24,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 244.10ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:53:24,602 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 623 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3321.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.78ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3618.68ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:24,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 0 Invalid, 444 Unknown, 0 Unchecked, 10.78ms Time], IncrementalHoareTripleChecker [6 Valid, 437 Invalid, 1 Unknown, 0 Unchecked, 3618.68ms Time] [2021-11-02 12:53:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-02 12:53:24,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-11-02 12:53:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 181 states have (on average 1.3038674033149171) internal successors, (236), 191 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:24,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 236 transitions. [2021-11-02 12:53:24,607 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 236 transitions. Word has length 56 [2021-11-02 12:53:24,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:24,607 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 236 transitions. [2021-11-02 12:53:24,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:24,607 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 236 transitions. [2021-11-02 12:53:24,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 12:53:24,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:24,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:24,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 12:53:24,609 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:24,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:24,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1564101757, now seen corresponding path program 1 times [2021-11-02 12:53:24,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:24,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604861233] [2021-11-02 12:53:24,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:24,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:25,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:25,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604861233] [2021-11-02 12:53:25,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604861233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:25,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:25,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:53:25,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712074409] [2021-11-02 12:53:25,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:53:25,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:25,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:53:25,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:53:25,215 INFO L87 Difference]: Start difference. First operand 192 states and 236 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:27,262 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 [] [2021-11-02 12:53:30,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:30,463 INFO L93 Difference]: Finished difference Result 308 states and 365 transitions. [2021-11-02 12:53:30,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:53:30,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-02 12:53:30,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:30,465 INFO L225 Difference]: With dead ends: 308 [2021-11-02 12:53:30,465 INFO L226 Difference]: Without dead ends: 295 [2021-11-02 12:53:30,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 254.26ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:53:30,466 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 227 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4677.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.36ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5043.40ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:30,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 0 Invalid, 1043 Unknown, 0 Unchecked, 11.36ms Time], IncrementalHoareTripleChecker [40 Valid, 1002 Invalid, 1 Unknown, 0 Unchecked, 5043.40ms Time] [2021-11-02 12:53:30,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-02 12:53:30,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 198. [2021-11-02 12:53:30,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 187 states have (on average 1.2887700534759359) internal successors, (241), 197 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:30,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 241 transitions. [2021-11-02 12:53:30,473 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 241 transitions. Word has length 62 [2021-11-02 12:53:30,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:30,473 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 241 transitions. [2021-11-02 12:53:30,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:30,473 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 241 transitions. [2021-11-02 12:53:30,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 12:53:30,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:30,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:30,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 12:53:30,474 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:30,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:30,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2012168309, now seen corresponding path program 1 times [2021-11-02 12:53:30,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:30,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006984992] [2021-11-02 12:53:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:30,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:30,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:30,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:30,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006984992] [2021-11-02 12:53:30,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006984992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:30,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:30,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:53:30,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385207394] [2021-11-02 12:53:30,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:53:30,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:30,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:53:30,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:53:30,757 INFO L87 Difference]: Start difference. First operand 198 states and 241 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:32,804 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 [] [2021-11-02 12:53:35,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:35,367 INFO L93 Difference]: Finished difference Result 592 states and 721 transitions. [2021-11-02 12:53:35,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:53:35,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-02 12:53:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:35,371 INFO L225 Difference]: With dead ends: 592 [2021-11-02 12:53:35,371 INFO L226 Difference]: Without dead ends: 416 [2021-11-02 12:53:35,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 125.48ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:53:35,372 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 564 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4116.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.37ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4465.43ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:35,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [564 Valid, 0 Invalid, 741 Unknown, 0 Unchecked, 11.37ms Time], IncrementalHoareTripleChecker [33 Valid, 707 Invalid, 1 Unknown, 0 Unchecked, 4465.43ms Time] [2021-11-02 12:53:35,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-11-02 12:53:35,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 238. [2021-11-02 12:53:35,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 227 states have (on average 1.2863436123348018) internal successors, (292), 237 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:35,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 292 transitions. [2021-11-02 12:53:35,380 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 292 transitions. Word has length 66 [2021-11-02 12:53:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:35,381 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 292 transitions. [2021-11-02 12:53:35,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:35,381 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 292 transitions. [2021-11-02 12:53:35,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 12:53:35,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:35,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:35,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 12:53:35,382 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:35,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:35,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1602740617, now seen corresponding path program 1 times [2021-11-02 12:53:35,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:35,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482063582] [2021-11-02 12:53:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:35,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:36,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:36,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:36,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482063582] [2021-11-02 12:53:36,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482063582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:36,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:36,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:53:36,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398467498] [2021-11-02 12:53:36,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:53:36,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:36,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:53:36,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:53:36,016 INFO L87 Difference]: Start difference. First operand 238 states and 292 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:38,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:41,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:41,821 INFO L93 Difference]: Finished difference Result 535 states and 646 transitions. [2021-11-02 12:53:41,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 12:53:41,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-02 12:53:41,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:41,823 INFO L225 Difference]: With dead ends: 535 [2021-11-02 12:53:41,823 INFO L226 Difference]: Without dead ends: 396 [2021-11-02 12:53:41,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 809.75ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:53:41,824 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 749 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4787.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.80ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5133.81ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:41,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 0 Invalid, 1227 Unknown, 0 Unchecked, 12.80ms Time], IncrementalHoareTripleChecker [36 Valid, 1190 Invalid, 1 Unknown, 0 Unchecked, 5133.81ms Time] [2021-11-02 12:53:41,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-02 12:53:41,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 253. [2021-11-02 12:53:41,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 242 states have (on average 1.28099173553719) internal successors, (310), 252 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:41,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 310 transitions. [2021-11-02 12:53:41,830 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 310 transitions. Word has length 66 [2021-11-02 12:53:41,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:41,830 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 310 transitions. [2021-11-02 12:53:41,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:41,830 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 310 transitions. [2021-11-02 12:53:41,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 12:53:41,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:41,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:41,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 12:53:41,831 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:41,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:41,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1103878777, now seen corresponding path program 1 times [2021-11-02 12:53:41,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:41,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633228208] [2021-11-02 12:53:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:41,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:44,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:44,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633228208] [2021-11-02 12:53:44,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633228208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:44,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:44,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:53:44,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869030258] [2021-11-02 12:53:44,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:53:44,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:44,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:53:44,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:53:44,065 INFO L87 Difference]: Start difference. First operand 253 states and 310 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:46,193 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 [] [2021-11-02 12:53:52,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:52,024 INFO L93 Difference]: Finished difference Result 698 states and 857 transitions. [2021-11-02 12:53:52,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:53:52,025 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-02 12:53:52,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:52,026 INFO L225 Difference]: With dead ends: 698 [2021-11-02 12:53:52,026 INFO L226 Difference]: Without dead ends: 479 [2021-11-02 12:53:52,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 787.78ms TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-11-02 12:53:52,029 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 842 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6752.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.36ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7297.47ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:52,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 0 Invalid, 1751 Unknown, 0 Unchecked, 14.36ms Time], IncrementalHoareTripleChecker [28 Valid, 1722 Invalid, 1 Unknown, 0 Unchecked, 7297.47ms Time] [2021-11-02 12:53:52,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-11-02 12:53:52,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 256. [2021-11-02 12:53:52,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 245 states have (on average 1.2816326530612245) internal successors, (314), 255 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 314 transitions. [2021-11-02 12:53:52,039 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 314 transitions. Word has length 66 [2021-11-02 12:53:52,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:52,039 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 314 transitions. [2021-11-02 12:53:52,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:52,040 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 314 transitions. [2021-11-02 12:53:52,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 12:53:52,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:52,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:52,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 12:53:52,042 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:52,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:52,042 INFO L85 PathProgramCache]: Analyzing trace with hash -598346, now seen corresponding path program 1 times [2021-11-02 12:53:52,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:52,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303357864] [2021-11-02 12:53:52,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:52,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:53,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:53,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303357864] [2021-11-02 12:53:53,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303357864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:53,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:53,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 12:53:53,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038144154] [2021-11-02 12:53:53,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 12:53:53,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:53,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 12:53:53,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:53:53,442 INFO L87 Difference]: Start difference. First operand 256 states and 314 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:55,569 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 [] [2021-11-02 12:54:14,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:14,524 INFO L93 Difference]: Finished difference Result 875 states and 1072 transitions. [2021-11-02 12:54:14,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-02 12:54:14,525 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-02 12:54:14,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:14,527 INFO L225 Difference]: With dead ends: 875 [2021-11-02 12:54:14,527 INFO L226 Difference]: Without dead ends: 641 [2021-11-02 12:54:14,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 3661.04ms TimeCoverageRelationStatistics Valid=495, Invalid=1761, Unknown=0, NotChecked=0, Total=2256 [2021-11-02 12:54:14,528 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1528 mSDsluCounter, 3364 mSDsCounter, 0 mSdLazyCounter, 5619 mSolverCounterSat, 112 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16952.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.11ms SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 5619 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17946.68ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:14,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 0 Invalid, 5732 Unknown, 0 Unchecked, 51.11ms Time], IncrementalHoareTripleChecker [112 Valid, 5619 Invalid, 1 Unknown, 0 Unchecked, 17946.68ms Time] [2021-11-02 12:54:14,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-11-02 12:54:14,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 289. [2021-11-02 12:54:14,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 278 states have (on average 1.2338129496402879) internal successors, (343), 288 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 343 transitions. [2021-11-02 12:54:14,551 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 343 transitions. Word has length 73 [2021-11-02 12:54:14,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:14,554 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 343 transitions. [2021-11-02 12:54:14,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:14,554 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 343 transitions. [2021-11-02 12:54:14,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 12:54:14,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:14,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:14,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 12:54:14,556 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:14,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:14,556 INFO L85 PathProgramCache]: Analyzing trace with hash -434327432, now seen corresponding path program 1 times [2021-11-02 12:54:14,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:14,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842181882] [2021-11-02 12:54:14,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:14,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:15,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:15,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842181882] [2021-11-02 12:54:15,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842181882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:15,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:15,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:54:15,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617485142] [2021-11-02 12:54:15,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:54:15,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:15,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:54:15,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:54:15,042 INFO L87 Difference]: Start difference. First operand 289 states and 343 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:17,091 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 [] [2021-11-02 12:54:26,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:26,741 INFO L93 Difference]: Finished difference Result 1137 states and 1353 transitions. [2021-11-02 12:54:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-02 12:54:26,742 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-02 12:54:26,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:26,744 INFO L225 Difference]: With dead ends: 1137 [2021-11-02 12:54:26,744 INFO L226 Difference]: Without dead ends: 933 [2021-11-02 12:54:26,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1560.29ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-11-02 12:54:26,745 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 907 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 2569 mSolverCounterSat, 55 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9466.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.71ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2569 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10184.22ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:26,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 0 Invalid, 2625 Unknown, 0 Unchecked, 23.71ms Time], IncrementalHoareTripleChecker [55 Valid, 2569 Invalid, 1 Unknown, 0 Unchecked, 10184.22ms Time] [2021-11-02 12:54:26,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-11-02 12:54:26,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 300. [2021-11-02 12:54:26,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 289 states have (on average 1.231833910034602) internal successors, (356), 299 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:26,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 356 transitions. [2021-11-02 12:54:26,754 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 356 transitions. Word has length 73 [2021-11-02 12:54:26,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:26,754 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 356 transitions. [2021-11-02 12:54:26,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:26,755 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 356 transitions. [2021-11-02 12:54:26,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 12:54:26,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:26,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:26,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 12:54:26,756 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:26,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:26,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1185559822, now seen corresponding path program 1 times [2021-11-02 12:54:26,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:26,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302929728] [2021-11-02 12:54:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:26,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:27,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:27,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302929728] [2021-11-02 12:54:27,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302929728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:27,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:27,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 12:54:27,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644877662] [2021-11-02 12:54:27,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 12:54:27,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:27,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 12:54:27,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:54:27,583 INFO L87 Difference]: Start difference. First operand 300 states and 356 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:29,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:37,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:37,149 INFO L93 Difference]: Finished difference Result 630 states and 742 transitions. [2021-11-02 12:54:37,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 12:54:37,149 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-02 12:54:37,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:37,151 INFO L225 Difference]: With dead ends: 630 [2021-11-02 12:54:37,151 INFO L226 Difference]: Without dead ends: 479 [2021-11-02 12:54:37,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 956.97ms TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2021-11-02 12:54:37,152 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 915 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8392.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.78ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8917.63ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:37,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 0 Invalid, 2249 Unknown, 0 Unchecked, 18.78ms Time], IncrementalHoareTripleChecker [34 Valid, 2214 Invalid, 1 Unknown, 0 Unchecked, 8917.63ms Time] [2021-11-02 12:54:37,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-11-02 12:54:37,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 300. [2021-11-02 12:54:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 289 states have (on average 1.231833910034602) internal successors, (356), 299 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:37,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 356 transitions. [2021-11-02 12:54:37,159 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 356 transitions. Word has length 73 [2021-11-02 12:54:37,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:37,159 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 356 transitions. [2021-11-02 12:54:37,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:37,159 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 356 transitions. [2021-11-02 12:54:37,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 12:54:37,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:37,160 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] [2021-11-02 12:54:37,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 12:54:37,160 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:37,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1462352711, now seen corresponding path program 1 times [2021-11-02 12:54:37,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:37,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264065651] [2021-11-02 12:54:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:37,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:37,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:37,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:37,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264065651] [2021-11-02 12:54:37,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264065651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:37,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:37,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:54:37,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547861222] [2021-11-02 12:54:37,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:54:37,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:37,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:54:37,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:54:37,578 INFO L87 Difference]: Start difference. First operand 300 states and 356 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:39,621 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 [] [2021-11-02 12:54:44,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:44,591 INFO L93 Difference]: Finished difference Result 643 states and 748 transitions. [2021-11-02 12:54:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:54:44,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-02 12:54:44,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:44,592 INFO L225 Difference]: With dead ends: 643 [2021-11-02 12:54:44,593 INFO L226 Difference]: Without dead ends: 363 [2021-11-02 12:54:44,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 252.98ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:54:44,593 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 119 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6466.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.51ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6827.23ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:44,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 0 Invalid, 1594 Unknown, 0 Unchecked, 10.51ms Time], IncrementalHoareTripleChecker [36 Valid, 1557 Invalid, 1 Unknown, 0 Unchecked, 6827.23ms Time] [2021-11-02 12:54:44,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-11-02 12:54:44,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 300. [2021-11-02 12:54:44,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 289 states have (on average 1.207612456747405) internal successors, (349), 299 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 349 transitions. [2021-11-02 12:54:44,603 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 349 transitions. Word has length 74 [2021-11-02 12:54:44,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:44,603 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 349 transitions. [2021-11-02 12:54:44,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:44,604 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 349 transitions. [2021-11-02 12:54:44,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 12:54:44,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:44,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:44,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 12:54:44,605 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:44,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:44,605 INFO L85 PathProgramCache]: Analyzing trace with hash -357955561, now seen corresponding path program 1 times [2021-11-02 12:54:44,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:44,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678344323] [2021-11-02 12:54:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:44,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:44,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:44,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678344323] [2021-11-02 12:54:44,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678344323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:44,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:44,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:54:44,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735161001] [2021-11-02 12:54:44,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:54:44,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:44,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:54:44,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:54:44,741 INFO L87 Difference]: Start difference. First operand 300 states and 349 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) [2021-11-02 12:54:47,016 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 [] [2021-11-02 12:54:49,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:49,210 INFO L93 Difference]: Finished difference Result 569 states and 661 transitions. [2021-11-02 12:54:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:54:49,210 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 [2021-11-02 12:54:49,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:49,211 INFO L225 Difference]: With dead ends: 569 [2021-11-02 12:54:49,211 INFO L226 Difference]: Without dead ends: 267 [2021-11-02 12:54:49,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:54:49,212 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4114.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.46ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4420.45ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:49,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 674 Unknown, 0 Unchecked, 2.46ms Time], IncrementalHoareTripleChecker [18 Valid, 655 Invalid, 1 Unknown, 0 Unchecked, 4420.45ms Time] [2021-11-02 12:54:49,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-02 12:54:49,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 249. [2021-11-02 12:54:49,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 238 states have (on average 1.1764705882352942) internal successors, (280), 248 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:49,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 280 transitions. [2021-11-02 12:54:49,219 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 280 transitions. Word has length 78 [2021-11-02 12:54:49,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:49,219 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 280 transitions. [2021-11-02 12:54:49,219 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) [2021-11-02 12:54:49,219 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 280 transitions. [2021-11-02 12:54:49,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 12:54:49,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:49,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:49,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 12:54:49,220 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:49,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:49,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1086849495, now seen corresponding path program 1 times [2021-11-02 12:54:49,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:49,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450828472] [2021-11-02 12:54:49,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:49,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:49,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:49,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:49,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450828472] [2021-11-02 12:54:49,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450828472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:49,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:49,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:54:49,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182208192] [2021-11-02 12:54:49,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:54:49,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:49,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:54:49,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:54:49,614 INFO L87 Difference]: Start difference. First operand 249 states and 280 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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) [2021-11-02 12:54:52,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:59,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:59,456 INFO L93 Difference]: Finished difference Result 631 states and 703 transitions. [2021-11-02 12:54:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 12:54:59,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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 [2021-11-02 12:54:59,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:59,458 INFO L225 Difference]: With dead ends: 631 [2021-11-02 12:54:59,458 INFO L226 Difference]: Without dead ends: 478 [2021-11-02 12:54:59,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 863.69ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-11-02 12:54:59,458 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 427 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8543.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.29ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9046.15ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:59,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 0 Invalid, 2526 Unknown, 0 Unchecked, 15.29ms Time], IncrementalHoareTripleChecker [35 Valid, 2490 Invalid, 1 Unknown, 0 Unchecked, 9046.15ms Time] [2021-11-02 12:54:59,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-02 12:54:59,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 249. [2021-11-02 12:54:59,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 238 states have (on average 1.1764705882352942) internal successors, (280), 248 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:59,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 280 transitions. [2021-11-02 12:54:59,465 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 280 transitions. Word has length 78 [2021-11-02 12:54:59,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:59,465 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 280 transitions. [2021-11-02 12:54:59,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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) [2021-11-02 12:54:59,465 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 280 transitions. [2021-11-02 12:54:59,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 12:54:59,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:59,466 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] [2021-11-02 12:54:59,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 12:54:59,466 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:59,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:59,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2116208793, now seen corresponding path program 1 times [2021-11-02 12:54:59,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:59,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747875437] [2021-11-02 12:54:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:59,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:01,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:01,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747875437] [2021-11-02 12:55:01,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747875437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:01,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:01,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:55:01,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691732201] [2021-11-02 12:55:01,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:55:01,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:01,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:55:01,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:55:01,936 INFO L87 Difference]: Start difference. First operand 249 states and 280 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) [2021-11-02 12:55:03,982 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 [] [2021-11-02 12:55:12,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:12,229 INFO L93 Difference]: Finished difference Result 594 states and 675 transitions. [2021-11-02 12:55:12,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 12:55:12,229 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 [2021-11-02 12:55:12,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:12,231 INFO L225 Difference]: With dead ends: 594 [2021-11-02 12:55:12,231 INFO L226 Difference]: Without dead ends: 441 [2021-11-02 12:55:12,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1330.65ms TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2021-11-02 12:55:12,231 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 700 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8852.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.46ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9374.39ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:12,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 0 Invalid, 2492 Unknown, 0 Unchecked, 21.46ms Time], IncrementalHoareTripleChecker [28 Valid, 2463 Invalid, 1 Unknown, 0 Unchecked, 9374.39ms Time] [2021-11-02 12:55:12,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-02 12:55:12,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 220. [2021-11-02 12:55:12,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 209 states have (on average 1.1913875598086126) internal successors, (249), 219 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 249 transitions. [2021-11-02 12:55:12,238 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 249 transitions. Word has length 78 [2021-11-02 12:55:12,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:12,238 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 249 transitions. [2021-11-02 12:55:12,238 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) [2021-11-02 12:55:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 249 transitions. [2021-11-02 12:55:12,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 12:55:12,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:12,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:12,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 12:55:12,239 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:55:12,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:12,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2027922652, now seen corresponding path program 1 times [2021-11-02 12:55:12,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:12,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918348156] [2021-11-02 12:55:12,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:12,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:12,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:12,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918348156] [2021-11-02 12:55:12,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918348156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:12,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:12,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:55:12,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120675547] [2021-11-02 12:55:12,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:55:12,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:12,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:55:12,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:55:12,543 INFO L87 Difference]: Start difference. First operand 220 states and 249 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 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) [2021-11-02 12:55:15,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:20,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:20,455 INFO L93 Difference]: Finished difference Result 863 states and 980 transitions. [2021-11-02 12:55:20,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 12:55:20,456 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 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 [2021-11-02 12:55:20,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:20,458 INFO L225 Difference]: With dead ends: 863 [2021-11-02 12:55:20,458 INFO L226 Difference]: Without dead ends: 677 [2021-11-02 12:55:20,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 330.77ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:55:20,459 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 761 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7096.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.56ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7577.78ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:20,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 0 Invalid, 1607 Unknown, 0 Unchecked, 13.56ms Time], IncrementalHoareTripleChecker [18 Valid, 1588 Invalid, 1 Unknown, 0 Unchecked, 7577.78ms Time] [2021-11-02 12:55:20,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2021-11-02 12:55:20,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 228. [2021-11-02 12:55:20,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 217 states have (on average 1.1843317972350231) internal successors, (257), 227 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:20,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 257 transitions. [2021-11-02 12:55:20,466 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 257 transitions. Word has length 81 [2021-11-02 12:55:20,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:20,466 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 257 transitions. [2021-11-02 12:55:20,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 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) [2021-11-02 12:55:20,467 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 257 transitions. [2021-11-02 12:55:20,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 12:55:20,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:20,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:20,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 12:55:20,467 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:55:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:20,468 INFO L85 PathProgramCache]: Analyzing trace with hash -2065220710, now seen corresponding path program 1 times [2021-11-02 12:55:20,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:20,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253050423] [2021-11-02 12:55:20,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:20,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:20,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:20,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253050423] [2021-11-02 12:55:20,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253050423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:20,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:20,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:55:20,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405838432] [2021-11-02 12:55:20,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:55:20,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:20,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:55:20,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:55:20,997 INFO L87 Difference]: Start difference. First operand 228 states and 257 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) [2021-11-02 12:55:23,585 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:29,708 INFO L93 Difference]: Finished difference Result 561 states and 630 transitions. [2021-11-02 12:55:29,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:55:29,708 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 [2021-11-02 12:55:29,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:29,710 INFO L225 Difference]: With dead ends: 561 [2021-11-02 12:55:29,710 INFO L226 Difference]: Without dead ends: 420 [2021-11-02 12:55:29,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1232.87ms TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:55:29,710 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 579 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7160.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.30ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7638.80ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:29,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 0 Invalid, 1639 Unknown, 0 Unchecked, 13.30ms Time], IncrementalHoareTripleChecker [36 Valid, 1602 Invalid, 1 Unknown, 0 Unchecked, 7638.80ms Time] [2021-11-02 12:55:29,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-02 12:55:29,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 253. [2021-11-02 12:55:29,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 242 states have (on average 1.1694214876033058) internal successors, (283), 252 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:29,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 283 transitions. [2021-11-02 12:55:29,717 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 283 transitions. Word has length 81 [2021-11-02 12:55:29,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:29,718 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 283 transitions. [2021-11-02 12:55:29,718 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) [2021-11-02 12:55:29,718 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 283 transitions. [2021-11-02 12:55:29,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 12:55:29,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:29,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:29,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 12:55:29,719 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:55:29,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:29,719 INFO L85 PathProgramCache]: Analyzing trace with hash 641398684, now seen corresponding path program 1 times [2021-11-02 12:55:29,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:29,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397929379] [2021-11-02 12:55:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:29,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:30,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:30,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397929379] [2021-11-02 12:55:30,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397929379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:30,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:30,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 12:55:30,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350551767] [2021-11-02 12:55:30,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 12:55:30,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:30,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 12:55:30,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:55:30,850 INFO L87 Difference]: Start difference. First operand 253 states and 283 transitions. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:33,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:44,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:44,662 INFO L93 Difference]: Finished difference Result 632 states and 705 transitions. [2021-11-02 12:55:44,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 12:55:44,663 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-02 12:55:44,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:44,665 INFO L225 Difference]: With dead ends: 632 [2021-11-02 12:55:44,665 INFO L226 Difference]: Without dead ends: 462 [2021-11-02 12:55:44,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 3064.44ms TimeCoverageRelationStatistics Valid=380, Invalid=1026, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 12:55:44,666 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 782 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 2806 mSolverCounterSat, 70 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10530.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.63ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2806 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11158.86ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:44,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 0 Invalid, 2877 Unknown, 0 Unchecked, 23.63ms Time], IncrementalHoareTripleChecker [70 Valid, 2806 Invalid, 1 Unknown, 0 Unchecked, 11158.86ms Time] [2021-11-02 12:55:44,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-02 12:55:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 221. [2021-11-02 12:55:44,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 210 states have (on average 1.1857142857142857) internal successors, (249), 220 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 249 transitions. [2021-11-02 12:55:44,675 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 249 transitions. Word has length 81 [2021-11-02 12:55:44,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:44,675 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 249 transitions. [2021-11-02 12:55:44,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:44,675 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 249 transitions. [2021-11-02 12:55:44,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 12:55:44,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:44,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:44,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 12:55:44,676 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:55:44,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:44,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1036195386, now seen corresponding path program 1 times [2021-11-02 12:55:44,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:44,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999082321] [2021-11-02 12:55:44,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:44,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:45,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:45,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999082321] [2021-11-02 12:55:45,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999082321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:45,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:45,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:55:45,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816976752] [2021-11-02 12:55:45,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:55:45,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:45,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:55:45,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:55:45,034 INFO L87 Difference]: Start difference. First operand 221 states and 249 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:47,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:52,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:52,129 INFO L93 Difference]: Finished difference Result 527 states and 596 transitions. [2021-11-02 12:55:52,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:55:52,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 12:55:52,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:52,131 INFO L225 Difference]: With dead ends: 527 [2021-11-02 12:55:52,131 INFO L226 Difference]: Without dead ends: 376 [2021-11-02 12:55:52,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 522.24ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:55:52,132 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 291 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6306.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.33ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6679.39ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:52,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 0 Invalid, 1241 Unknown, 0 Unchecked, 8.33ms Time], IncrementalHoareTripleChecker [23 Valid, 1217 Invalid, 1 Unknown, 0 Unchecked, 6679.39ms Time] [2021-11-02 12:55:52,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-02 12:55:52,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 238. [2021-11-02 12:55:52,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 227 states have (on average 1.171806167400881) internal successors, (266), 237 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:52,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 266 transitions. [2021-11-02 12:55:52,154 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 266 transitions. Word has length 84 [2021-11-02 12:55:52,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:52,154 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 266 transitions. [2021-11-02 12:55:52,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:52,154 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 266 transitions. [2021-11-02 12:55:52,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 12:55:52,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:52,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:52,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 12:55:52,155 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:55:52,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:52,156 INFO L85 PathProgramCache]: Analyzing trace with hash 887032648, now seen corresponding path program 1 times [2021-11-02 12:55:52,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:52,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010272615] [2021-11-02 12:55:52,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:52,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:52,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:52,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010272615] [2021-11-02 12:55:52,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010272615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:52,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:52,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:55:52,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412080493] [2021-11-02 12:55:52,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:55:52,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:52,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:55:52,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:55:52,591 INFO L87 Difference]: Start difference. First operand 238 states and 266 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:55,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:56:00,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:56:00,810 INFO L93 Difference]: Finished difference Result 503 states and 556 transitions. [2021-11-02 12:56:00,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 12:56:00,811 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 12:56:00,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:56:00,812 INFO L225 Difference]: With dead ends: 503 [2021-11-02 12:56:00,812 INFO L226 Difference]: Without dead ends: 421 [2021-11-02 12:56:00,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 925.83ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-11-02 12:56:00,813 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 653 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7001.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.99ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7425.85ms IncrementalHoareTripleChecker+Time [2021-11-02 12:56:00,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 0 Invalid, 1914 Unknown, 0 Unchecked, 11.99ms Time], IncrementalHoareTripleChecker [47 Valid, 1866 Invalid, 1 Unknown, 0 Unchecked, 7425.85ms Time] [2021-11-02 12:56:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-02 12:56:00,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 253. [2021-11-02 12:56:00,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 242 states have (on average 1.1735537190082646) internal successors, (284), 252 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 284 transitions. [2021-11-02 12:56:00,821 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 284 transitions. Word has length 84 [2021-11-02 12:56:00,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:56:00,821 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 284 transitions. [2021-11-02 12:56:00,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:00,822 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 284 transitions. [2021-11-02 12:56:00,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 12:56:00,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:56:00,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:56:00,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 12:56:00,823 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:56:00,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:56:00,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1145198086, now seen corresponding path program 1 times [2021-11-02 12:56:00,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:56:00,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123507953] [2021-11-02 12:56:00,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:56:00,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:56:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:56:01,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:56:01,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:56:01,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123507953] [2021-11-02 12:56:01,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123507953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:56:01,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:56:01,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 12:56:01,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808460252] [2021-11-02 12:56:01,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 12:56:01,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:56:01,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 12:56:01,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:56:01,636 INFO L87 Difference]: Start difference. First operand 253 states and 284 transitions. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:03,685 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 [] [2021-11-02 12:56:08,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:56:08,780 INFO L93 Difference]: Finished difference Result 634 states and 712 transitions. [2021-11-02 12:56:08,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 12:56:08,781 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 12:56:08,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:56:08,782 INFO L225 Difference]: With dead ends: 634 [2021-11-02 12:56:08,782 INFO L226 Difference]: Without dead ends: 472 [2021-11-02 12:56:08,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1309.72ms TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-11-02 12:56:08,783 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 890 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 55 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5767.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.13ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6178.05ms IncrementalHoareTripleChecker+Time [2021-11-02 12:56:08,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 0 Invalid, 1575 Unknown, 0 Unchecked, 10.13ms Time], IncrementalHoareTripleChecker [55 Valid, 1519 Invalid, 1 Unknown, 0 Unchecked, 6178.05ms Time] [2021-11-02 12:56:08,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-02 12:56:08,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 281. [2021-11-02 12:56:08,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 270 states have (on average 1.1555555555555554) internal successors, (312), 280 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:08,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 312 transitions. [2021-11-02 12:56:08,790 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 312 transitions. Word has length 84 [2021-11-02 12:56:08,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:56:08,791 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 312 transitions. [2021-11-02 12:56:08,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:08,791 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 312 transitions. [2021-11-02 12:56:08,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 12:56:08,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:56:08,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:56:08,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 12:56:08,792 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:56:08,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:56:08,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1013192456, now seen corresponding path program 1 times [2021-11-02 12:56:08,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:56:08,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243259155] [2021-11-02 12:56:08,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:56:08,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:56:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:56:09,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:56:09,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:56:09,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243259155] [2021-11-02 12:56:09,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243259155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:56:09,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:56:09,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:56:09,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361356352] [2021-11-02 12:56:09,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:56:09,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:56:09,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:56:09,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:56:09,239 INFO L87 Difference]: Start difference. First operand 281 states and 312 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:11,728 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:56:15,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:56:15,064 INFO L93 Difference]: Finished difference Result 539 states and 609 transitions. [2021-11-02 12:56:15,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:56:15,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 12:56:15,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:56:15,065 INFO L225 Difference]: With dead ends: 539 [2021-11-02 12:56:15,065 INFO L226 Difference]: Without dead ends: 393 [2021-11-02 12:56:15,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 317.81ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:56:15,066 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 306 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5267.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.10ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5603.28ms IncrementalHoareTripleChecker+Time [2021-11-02 12:56:15,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 0 Invalid, 1191 Unknown, 0 Unchecked, 7.10ms Time], IncrementalHoareTripleChecker [12 Valid, 1178 Invalid, 1 Unknown, 0 Unchecked, 5603.28ms Time] [2021-11-02 12:56:15,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-11-02 12:56:15,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 291. [2021-11-02 12:56:15,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 280 states have (on average 1.1464285714285714) internal successors, (321), 290 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 321 transitions. [2021-11-02 12:56:15,077 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 321 transitions. Word has length 84 [2021-11-02 12:56:15,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:56:15,077 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 321 transitions. [2021-11-02 12:56:15,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:15,077 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 321 transitions. [2021-11-02 12:56:15,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 12:56:15,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:56:15,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:56:15,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-02 12:56:15,078 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:56:15,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:56:15,079 INFO L85 PathProgramCache]: Analyzing trace with hash -575155446, now seen corresponding path program 1 times [2021-11-02 12:56:15,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:56:15,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428836425] [2021-11-02 12:56:15,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:56:15,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:56:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:56:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:56:17,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:56:17,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428836425] [2021-11-02 12:56:17,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428836425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:56:17,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:56:17,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 12:56:17,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802341987] [2021-11-02 12:56:17,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 12:56:17,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:56:17,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 12:56:17,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:56:17,783 INFO L87 Difference]: Start difference. First operand 291 states and 321 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:19,830 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 [] [2021-11-02 12:56:28,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:56:28,077 INFO L93 Difference]: Finished difference Result 601 states and 667 transitions. [2021-11-02 12:56:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 12:56:28,077 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 12:56:28,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:56:28,079 INFO L225 Difference]: With dead ends: 601 [2021-11-02 12:56:28,079 INFO L226 Difference]: Without dead ends: 492 [2021-11-02 12:56:28,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 2063.27ms TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2021-11-02 12:56:28,080 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1220 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8284.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.43ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8771.95ms IncrementalHoareTripleChecker+Time [2021-11-02 12:56:28,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 0 Invalid, 2189 Unknown, 0 Unchecked, 22.43ms Time], IncrementalHoareTripleChecker [54 Valid, 2134 Invalid, 1 Unknown, 0 Unchecked, 8771.95ms Time] [2021-11-02 12:56:28,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-11-02 12:56:28,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 371. [2021-11-02 12:56:28,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 360 states have (on average 1.1277777777777778) internal successors, (406), 370 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:28,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 406 transitions. [2021-11-02 12:56:28,090 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 406 transitions. Word has length 84 [2021-11-02 12:56:28,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:56:28,090 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 406 transitions. [2021-11-02 12:56:28,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:28,090 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 406 transitions. [2021-11-02 12:56:28,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 12:56:28,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:56:28,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:56:28,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 12:56:28,091 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:56:28,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:56:28,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2008165628, now seen corresponding path program 1 times [2021-11-02 12:56:28,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:56:28,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094004654] [2021-11-02 12:56:28,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:56:28,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:56:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:56:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:56:28,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:56:28,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094004654] [2021-11-02 12:56:28,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094004654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:56:28,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:56:28,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:56:28,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853312833] [2021-11-02 12:56:28,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:56:28,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:56:28,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:56:28,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:56:28,653 INFO L87 Difference]: Start difference. First operand 371 states and 406 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:30,699 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 [] [2021-11-02 12:56:37,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:56:37,297 INFO L93 Difference]: Finished difference Result 619 states and 682 transitions. [2021-11-02 12:56:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 12:56:37,298 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 12:56:37,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:56:37,299 INFO L225 Difference]: With dead ends: 619 [2021-11-02 12:56:37,299 INFO L226 Difference]: Without dead ends: 546 [2021-11-02 12:56:37,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1457.45ms TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2021-11-02 12:56:37,300 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 660 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1843 mSolverCounterSat, 48 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6980.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.98ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1843 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7396.70ms IncrementalHoareTripleChecker+Time [2021-11-02 12:56:37,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 0 Invalid, 1892 Unknown, 0 Unchecked, 15.98ms Time], IncrementalHoareTripleChecker [48 Valid, 1843 Invalid, 1 Unknown, 0 Unchecked, 7396.70ms Time] [2021-11-02 12:56:37,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-11-02 12:56:37,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 384. [2021-11-02 12:56:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 373 states have (on average 1.1340482573726542) internal successors, (423), 383 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:37,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 423 transitions. [2021-11-02 12:56:37,316 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 423 transitions. Word has length 84 [2021-11-02 12:56:37,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:56:37,316 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 423 transitions. [2021-11-02 12:56:37,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:37,317 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 423 transitions. [2021-11-02 12:56:37,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 12:56:37,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:56:37,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:56:37,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-02 12:56:37,318 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:56:37,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:56:37,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1328107258, now seen corresponding path program 1 times [2021-11-02 12:56:37,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:56:37,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968499007] [2021-11-02 12:56:37,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:56:37,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:56:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:56:40,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:56:40,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:56:40,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968499007] [2021-11-02 12:56:40,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968499007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:56:40,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:56:40,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:56:40,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693485697] [2021-11-02 12:56:40,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:56:40,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:56:40,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:56:40,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:56:40,293 INFO L87 Difference]: Start difference. First operand 384 states and 423 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:42,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:56:50,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:56:50,310 INFO L93 Difference]: Finished difference Result 636 states and 705 transitions. [2021-11-02 12:56:50,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 12:56:50,311 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 12:56:50,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:56:50,312 INFO L225 Difference]: With dead ends: 636 [2021-11-02 12:56:50,312 INFO L226 Difference]: Without dead ends: 541 [2021-11-02 12:56:50,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1871.00ms TimeCoverageRelationStatistics Valid=191, Invalid=459, Unknown=0, NotChecked=0, Total=650 [2021-11-02 12:56:50,313 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1160 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 81 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8010.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.71ms SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8509.31ms IncrementalHoareTripleChecker+Time [2021-11-02 12:56:50,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1160 Valid, 0 Invalid, 1899 Unknown, 0 Unchecked, 18.71ms Time], IncrementalHoareTripleChecker [81 Valid, 1817 Invalid, 1 Unknown, 0 Unchecked, 8509.31ms Time] [2021-11-02 12:56:50,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-11-02 12:56:50,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 440. [2021-11-02 12:56:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 429 states have (on average 1.1515151515151516) internal successors, (494), 439 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 494 transitions. [2021-11-02 12:56:50,329 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 494 transitions. Word has length 84 [2021-11-02 12:56:50,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:56:50,330 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 494 transitions. [2021-11-02 12:56:50,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 494 transitions. [2021-11-02 12:56:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 12:56:50,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:56:50,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:56:50,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-02 12:56:50,331 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:56:50,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:56:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash -963374140, now seen corresponding path program 1 times [2021-11-02 12:56:50,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:56:50,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938527190] [2021-11-02 12:56:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:56:50,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:56:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:56:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:56:54,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:56:54,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938527190] [2021-11-02 12:56:54,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938527190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:56:54,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:56:54,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-02 12:56:54,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520216590] [2021-11-02 12:56:54,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-02 12:56:54,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:56:54,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-02 12:56:54,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-11-02 12:56:54,549 INFO L87 Difference]: Start difference. First operand 440 states and 494 transitions. Second operand has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:56,597 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 [] [2021-11-02 12:57:24,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:57:24,606 INFO L93 Difference]: Finished difference Result 784 states and 866 transitions. [2021-11-02 12:57:24,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-02 12:57:24,606 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 12:57:24,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:57:24,608 INFO L225 Difference]: With dead ends: 784 [2021-11-02 12:57:24,608 INFO L226 Difference]: Without dead ends: 718 [2021-11-02 12:57:24,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 8754.38ms TimeCoverageRelationStatistics Valid=852, Invalid=3704, Unknown=0, NotChecked=0, Total=4556 [2021-11-02 12:57:24,610 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1982 mSDsluCounter, 4595 mSDsCounter, 0 mSdLazyCounter, 7245 mSolverCounterSat, 155 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21687.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 67.34ms SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 7245 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22879.50ms IncrementalHoareTripleChecker+Time [2021-11-02 12:57:24,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1982 Valid, 0 Invalid, 7401 Unknown, 0 Unchecked, 67.34ms Time], IncrementalHoareTripleChecker [155 Valid, 7245 Invalid, 1 Unknown, 0 Unchecked, 22879.50ms Time] [2021-11-02 12:57:24,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-11-02 12:57:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 440. [2021-11-02 12:57:24,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 429 states have (on average 1.1515151515151516) internal successors, (494), 439 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 494 transitions. [2021-11-02 12:57:24,630 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 494 transitions. Word has length 84 [2021-11-02 12:57:24,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:57:24,631 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 494 transitions. [2021-11-02 12:57:24,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:24,631 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 494 transitions. [2021-11-02 12:57:24,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 12:57:24,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:57:24,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:57:24,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-02 12:57:24,632 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:57:24,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:57:24,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1743245254, now seen corresponding path program 1 times [2021-11-02 12:57:24,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:57:24,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945655227] [2021-11-02 12:57:24,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:57:24,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:57:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:57:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:57:28,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:57:28,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945655227] [2021-11-02 12:57:28,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945655227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:57:28,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:57:28,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-02 12:57:28,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842698314] [2021-11-02 12:57:28,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-02 12:57:28,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:57:28,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-02 12:57:28,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-11-02 12:57:28,390 INFO L87 Difference]: Start difference. First operand 440 states and 494 transitions. Second operand has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 23 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:30,656 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 [] [2021-11-02 12:57:50,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:57:50,450 INFO L93 Difference]: Finished difference Result 667 states and 738 transitions. [2021-11-02 12:57:50,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-02 12:57:50,451 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 23 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 12:57:50,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:57:50,453 INFO L225 Difference]: With dead ends: 667 [2021-11-02 12:57:50,453 INFO L226 Difference]: Without dead ends: 601 [2021-11-02 12:57:50,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 7749.79ms TimeCoverageRelationStatistics Valid=656, Invalid=2424, Unknown=0, NotChecked=0, Total=3080 [2021-11-02 12:57:50,454 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1662 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 5072 mSolverCounterSat, 171 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14831.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.74ms SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 5072 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15696.08ms IncrementalHoareTripleChecker+Time [2021-11-02 12:57:50,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1662 Valid, 0 Invalid, 5244 Unknown, 0 Unchecked, 39.74ms Time], IncrementalHoareTripleChecker [171 Valid, 5072 Invalid, 1 Unknown, 0 Unchecked, 15696.08ms Time] [2021-11-02 12:57:50,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-11-02 12:57:50,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 432. [2021-11-02 12:57:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 421 states have (on average 1.152019002375297) internal successors, (485), 431 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:50,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 485 transitions. [2021-11-02 12:57:50,477 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 485 transitions. Word has length 84 [2021-11-02 12:57:50,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:57:50,478 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 485 transitions. [2021-11-02 12:57:50,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 23 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:50,478 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 485 transitions. [2021-11-02 12:57:50,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 12:57:50,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:57:50,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:57:50,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-02 12:57:50,479 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:57:50,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:57:50,480 INFO L85 PathProgramCache]: Analyzing trace with hash -289759361, now seen corresponding path program 1 times [2021-11-02 12:57:50,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:57:50,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617668952] [2021-11-02 12:57:50,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:57:50,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:57:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:57:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:57:50,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:57:50,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617668952] [2021-11-02 12:57:50,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617668952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:57:50,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:57:50,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:57:50,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818099018] [2021-11-02 12:57:50,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:57:50,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:57:50,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:57:50,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:57:50,853 INFO L87 Difference]: Start difference. First operand 432 states and 485 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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) [2021-11-02 12:57:53,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:57:58,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:57:58,059 INFO L93 Difference]: Finished difference Result 597 states and 674 transitions. [2021-11-02 12:57:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 12:57:58,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 [2021-11-02 12:57:58,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:57:58,061 INFO L225 Difference]: With dead ends: 597 [2021-11-02 12:57:58,061 INFO L226 Difference]: Without dead ends: 580 [2021-11-02 12:57:58,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 506.45ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:57:58,062 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 236 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 88 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6238.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.76ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6780.91ms IncrementalHoareTripleChecker+Time [2021-11-02 12:57:58,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 0 Invalid, 1459 Unknown, 0 Unchecked, 7.76ms Time], IncrementalHoareTripleChecker [88 Valid, 1370 Invalid, 1 Unknown, 0 Unchecked, 6780.91ms Time] [2021-11-02 12:57:58,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-11-02 12:57:58,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 442. [2021-11-02 12:57:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 431 states have (on average 1.1461716937354989) internal successors, (494), 441 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:58,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 494 transitions. [2021-11-02 12:57:58,075 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 494 transitions. Word has length 86 [2021-11-02 12:57:58,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:57:58,075 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 494 transitions. [2021-11-02 12:57:58,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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) [2021-11-02 12:57:58,076 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 494 transitions. [2021-11-02 12:57:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 12:57:58,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:57:58,077 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] [2021-11-02 12:57:58,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-02 12:57:58,077 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:57:58,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:57:58,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1099105987, now seen corresponding path program 1 times [2021-11-02 12:57:58,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:57:58,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397611570] [2021-11-02 12:57:58,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:57:58,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:57:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:57:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:57:58,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:57:58,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397611570] [2021-11-02 12:57:58,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397611570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:57:58,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:57:58,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:57:58,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497237526] [2021-11-02 12:57:58,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:57:58,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:57:58,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:57:58,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:57:58,394 INFO L87 Difference]: Start difference. First operand 442 states and 494 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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) [2021-11-02 12:58:01,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:05,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:05,878 INFO L93 Difference]: Finished difference Result 776 states and 869 transitions. [2021-11-02 12:58:05,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 12:58:05,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 [2021-11-02 12:58:05,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:05,880 INFO L225 Difference]: With dead ends: 776 [2021-11-02 12:58:05,880 INFO L226 Difference]: Without dead ends: 541 [2021-11-02 12:58:05,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 617.17ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:58:05,881 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 527 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6357.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.58ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6946.88ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:05,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 0 Invalid, 1227 Unknown, 0 Unchecked, 9.58ms Time], IncrementalHoareTripleChecker [22 Valid, 1204 Invalid, 1 Unknown, 0 Unchecked, 6946.88ms Time] [2021-11-02 12:58:05,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-11-02 12:58:05,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 423. [2021-11-02 12:58:05,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 412 states have (on average 1.145631067961165) internal successors, (472), 422 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:05,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 472 transitions. [2021-11-02 12:58:05,894 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 472 transitions. Word has length 86 [2021-11-02 12:58:05,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:05,894 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 472 transitions. [2021-11-02 12:58:05,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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) [2021-11-02 12:58:05,895 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 472 transitions. [2021-11-02 12:58:05,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 12:58:05,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:05,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:05,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-02 12:58:05,896 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:58:05,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:05,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2076833283, now seen corresponding path program 1 times [2021-11-02 12:58:05,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:05,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362290303] [2021-11-02 12:58:05,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:05,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:10,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:10,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362290303] [2021-11-02 12:58:10,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362290303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:10,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:10,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-02 12:58:10,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606532686] [2021-11-02 12:58:10,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 12:58:10,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:10,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 12:58:10,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:58:10,568 INFO L87 Difference]: Start difference. First operand 423 states and 472 transitions. Second operand has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 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) [2021-11-02 12:58:13,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:26,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:26,613 INFO L93 Difference]: Finished difference Result 678 states and 757 transitions. [2021-11-02 12:58:26,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-02 12:58:26,613 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 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 [2021-11-02 12:58:26,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:26,615 INFO L225 Difference]: With dead ends: 678 [2021-11-02 12:58:26,615 INFO L226 Difference]: Without dead ends: 674 [2021-11-02 12:58:26,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 5401.39ms TimeCoverageRelationStatistics Valid=729, Invalid=3053, Unknown=0, NotChecked=0, Total=3782 [2021-11-02 12:58:26,617 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1482 mSDsluCounter, 2039 mSDsCounter, 0 mSdLazyCounter, 3230 mSolverCounterSat, 234 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10435.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.26ms SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 3230 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11191.48ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:26,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 0 Invalid, 3465 Unknown, 0 Unchecked, 24.26ms Time], IncrementalHoareTripleChecker [234 Valid, 3230 Invalid, 1 Unknown, 0 Unchecked, 11191.48ms Time] [2021-11-02 12:58:26,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-11-02 12:58:26,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 423. [2021-11-02 12:58:26,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 412 states have (on average 1.1480582524271845) internal successors, (473), 422 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:26,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 473 transitions. [2021-11-02 12:58:26,630 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 473 transitions. Word has length 86 [2021-11-02 12:58:26,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:26,630 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 473 transitions. [2021-11-02 12:58:26,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 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) [2021-11-02 12:58:26,630 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 473 transitions. [2021-11-02 12:58:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:58:26,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:26,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:26,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-02 12:58:26,631 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:58:26,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:26,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1411227847, now seen corresponding path program 1 times [2021-11-02 12:58:26,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:26,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875799852] [2021-11-02 12:58:26,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:26,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:29,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:29,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875799852] [2021-11-02 12:58:29,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875799852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:29,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:29,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 12:58:29,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042908420] [2021-11-02 12:58:29,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 12:58:29,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:29,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 12:58:29,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:58:29,708 INFO L87 Difference]: Start difference. First operand 423 states and 473 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 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) [2021-11-02 12:58:32,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:38,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:38,991 INFO L93 Difference]: Finished difference Result 650 states and 733 transitions. [2021-11-02 12:58:38,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 12:58:38,992 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 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 [2021-11-02 12:58:38,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:38,993 INFO L225 Difference]: With dead ends: 650 [2021-11-02 12:58:38,993 INFO L226 Difference]: Without dead ends: 510 [2021-11-02 12:58:38,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2865.33ms TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-02 12:58:38,994 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1398 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 81 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6624.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.93ms SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7238.79ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:38,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1398 Valid, 0 Invalid, 1496 Unknown, 0 Unchecked, 14.93ms Time], IncrementalHoareTripleChecker [81 Valid, 1414 Invalid, 1 Unknown, 0 Unchecked, 7238.79ms Time] [2021-11-02 12:58:38,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-11-02 12:58:39,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 420. [2021-11-02 12:58:39,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 409 states have (on average 1.1418092909535453) internal successors, (467), 419 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:39,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 467 transitions. [2021-11-02 12:58:39,007 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 467 transitions. Word has length 87 [2021-11-02 12:58:39,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:39,008 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 467 transitions. [2021-11-02 12:58:39,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 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) [2021-11-02 12:58:39,008 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 467 transitions. [2021-11-02 12:58:39,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:58:39,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:39,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:39,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-02 12:58:39,009 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:58:39,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:39,009 INFO L85 PathProgramCache]: Analyzing trace with hash -279947773, now seen corresponding path program 1 times [2021-11-02 12:58:39,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:39,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145356215] [2021-11-02 12:58:39,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:39,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:43,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:43,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145356215] [2021-11-02 12:58:43,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145356215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:43,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:43,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 12:58:43,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894512965] [2021-11-02 12:58:43,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 12:58:43,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:43,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 12:58:43,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:58:43,376 INFO L87 Difference]: Start difference. First operand 420 states and 467 transitions. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2021-11-02 12:58:46,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:51,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:51,725 INFO L93 Difference]: Finished difference Result 717 states and 798 transitions. [2021-11-02 12:58:51,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 12:58:51,738 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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 [2021-11-02 12:58:51,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:51,739 INFO L225 Difference]: With dead ends: 717 [2021-11-02 12:58:51,739 INFO L226 Difference]: Without dead ends: 651 [2021-11-02 12:58:51,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1337.27ms TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2021-11-02 12:58:51,740 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1189 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6851.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.56ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7436.82ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:51,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1189 Valid, 0 Invalid, 1791 Unknown, 0 Unchecked, 12.56ms Time], IncrementalHoareTripleChecker [42 Valid, 1748 Invalid, 1 Unknown, 0 Unchecked, 7436.82ms Time] [2021-11-02 12:58:51,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-11-02 12:58:51,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 420. [2021-11-02 12:58:51,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 409 states have (on average 1.1393643031784841) internal successors, (466), 419 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:51,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 466 transitions. [2021-11-02 12:58:51,755 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 466 transitions. Word has length 87 [2021-11-02 12:58:51,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:51,755 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 466 transitions. [2021-11-02 12:58:51,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2021-11-02 12:58:51,756 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 466 transitions. [2021-11-02 12:58:51,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:58:51,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:51,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:51,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-02 12:58:51,757 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:58:51,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:51,757 INFO L85 PathProgramCache]: Analyzing trace with hash 400110597, now seen corresponding path program 1 times [2021-11-02 12:58:51,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:51,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110048103] [2021-11-02 12:58:51,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:51,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:54,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:54,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110048103] [2021-11-02 12:58:54,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110048103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:54,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:54,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:58:54,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451911490] [2021-11-02 12:58:54,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:58:54,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:54,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:58:54,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:58:54,723 INFO L87 Difference]: Start difference. First operand 420 states and 466 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2021-11-02 12:58:57,757 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:59:01,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:59:01,339 INFO L93 Difference]: Finished difference Result 616 states and 689 transitions. [2021-11-02 12:59:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:59:01,339 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 [2021-11-02 12:59:01,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:59:01,341 INFO L225 Difference]: With dead ends: 616 [2021-11-02 12:59:01,341 INFO L226 Difference]: Without dead ends: 500 [2021-11-02 12:59:01,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 647.73ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:59:01,341 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 962 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5688.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.47ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6245.53ms IncrementalHoareTripleChecker+Time [2021-11-02 12:59:01,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [962 Valid, 0 Invalid, 965 Unknown, 0 Unchecked, 6.47ms Time], IncrementalHoareTripleChecker [50 Valid, 914 Invalid, 1 Unknown, 0 Unchecked, 6245.53ms Time] [2021-11-02 12:59:01,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-02 12:59:01,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 416. [2021-11-02 12:59:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 405 states have (on average 1.1358024691358024) internal successors, (460), 415 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:01,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 460 transitions. [2021-11-02 12:59:01,356 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 460 transitions. Word has length 87 [2021-11-02 12:59:01,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:59:01,356 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 460 transitions. [2021-11-02 12:59:01,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2021-11-02 12:59:01,356 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 460 transitions. [2021-11-02 12:59:01,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 12:59:01,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:59:01,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:59:01,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-02 12:59:01,357 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:59:01,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:59:01,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1860876412, now seen corresponding path program 1 times [2021-11-02 12:59:01,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:59:01,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660245885] [2021-11-02 12:59:01,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:59:01,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:59:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:59:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:59:06,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:59:06,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660245885] [2021-11-02 12:59:06,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660245885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:59:06,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:59:06,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-02 12:59:06,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858774872] [2021-11-02 12:59:06,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 12:59:06,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:59:06,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 12:59:06,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-11-02 12:59:06,466 INFO L87 Difference]: Start difference. First operand 416 states and 460 transitions. Second operand has 20 states, 20 states have (on average 4.45) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:08,520 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 [] [2021-11-02 12:59:28,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:59:28,853 INFO L93 Difference]: Finished difference Result 755 states and 850 transitions. [2021-11-02 12:59:28,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-02 12:59:28,854 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.45) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-02 12:59:28,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:59:28,856 INFO L225 Difference]: With dead ends: 755 [2021-11-02 12:59:28,856 INFO L226 Difference]: Without dead ends: 751 [2021-11-02 12:59:28,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 8890.71ms TimeCoverageRelationStatistics Valid=980, Invalid=4276, Unknown=0, NotChecked=0, Total=5256 [2021-11-02 12:59:28,857 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1424 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 4057 mSolverCounterSat, 199 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13349.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.02ms SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 4057 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14279.77ms IncrementalHoareTripleChecker+Time [2021-11-02 12:59:28,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1424 Valid, 0 Invalid, 4257 Unknown, 0 Unchecked, 42.02ms Time], IncrementalHoareTripleChecker [199 Valid, 4057 Invalid, 1 Unknown, 0 Unchecked, 14279.77ms Time] [2021-11-02 12:59:28,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-11-02 12:59:28,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 401. [2021-11-02 12:59:28,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 391 states have (on average 1.1406649616368287) internal successors, (446), 400 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:28,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 446 transitions. [2021-11-02 12:59:28,876 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 446 transitions. Word has length 89 [2021-11-02 12:59:28,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:59:28,876 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 446 transitions. [2021-11-02 12:59:28,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.45) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:28,876 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 446 transitions. [2021-11-02 12:59:28,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 12:59:28,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:59:28,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:59:28,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-02 12:59:28,878 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:59:28,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:59:28,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1405622678, now seen corresponding path program 1 times [2021-11-02 12:59:28,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:59:28,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104704244] [2021-11-02 12:59:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:59:28,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:59:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:59:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:59:29,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:59:29,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104704244] [2021-11-02 12:59:29,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104704244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:59:29,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:59:29,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:59:29,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273102424] [2021-11-02 12:59:29,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:59:29,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:59:29,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:59:29,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:59:29,107 INFO L87 Difference]: Start difference. First operand 401 states and 446 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 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) [2021-11-02 12:59:31,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:59:33,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:59:33,543 INFO L93 Difference]: Finished difference Result 478 states and 527 transitions. [2021-11-02 12:59:33,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:59:33,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 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 [2021-11-02 12:59:33,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:59:33,545 INFO L225 Difference]: With dead ends: 478 [2021-11-02 12:59:33,545 INFO L226 Difference]: Without dead ends: 447 [2021-11-02 12:59:33,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 89.54ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:59:33,546 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 95 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4031.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4359.22ms IncrementalHoareTripleChecker+Time [2021-11-02 12:59:33,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 0 Invalid, 798 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [2 Valid, 795 Invalid, 1 Unknown, 0 Unchecked, 4359.22ms Time] [2021-11-02 12:59:33,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-02 12:59:33,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 404. [2021-11-02 12:59:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 394 states have (on average 1.1395939086294415) internal successors, (449), 403 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 449 transitions. [2021-11-02 12:59:33,563 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 449 transitions. Word has length 91 [2021-11-02 12:59:33,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:59:33,563 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 449 transitions. [2021-11-02 12:59:33,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 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) [2021-11-02 12:59:33,564 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 449 transitions. [2021-11-02 12:59:33,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 12:59:33,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:59:33,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:59:33,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-02 12:59:33,565 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:59:33,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:59:33,565 INFO L85 PathProgramCache]: Analyzing trace with hash 625525256, now seen corresponding path program 1 times [2021-11-02 12:59:33,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:59:33,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448104996] [2021-11-02 12:59:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:59:33,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:59:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:59:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:59:33,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:59:33,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448104996] [2021-11-02 12:59:33,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448104996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:59:33,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:59:33,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:59:33,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728231652] [2021-11-02 12:59:33,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:59:33,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:59:33,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:59:33,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:59:33,968 INFO L87 Difference]: Start difference. First operand 404 states and 449 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:36,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:59:39,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:59:39,070 INFO L93 Difference]: Finished difference Result 438 states and 486 transitions. [2021-11-02 12:59:39,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:59:39,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-02 12:59:39,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:59:39,071 INFO L225 Difference]: With dead ends: 438 [2021-11-02 12:59:39,072 INFO L226 Difference]: Without dead ends: 436 [2021-11-02 12:59:39,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 273.59ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:59:39,072 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 366 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4441.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.50ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4925.96ms IncrementalHoareTripleChecker+Time [2021-11-02 12:59:39,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 0 Invalid, 597 Unknown, 0 Unchecked, 4.50ms Time], IncrementalHoareTripleChecker [3 Valid, 593 Invalid, 1 Unknown, 0 Unchecked, 4925.96ms Time] [2021-11-02 12:59:39,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-11-02 12:59:39,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 402. [2021-11-02 12:59:39,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 393 states have (on average 1.1348600508905853) internal successors, (446), 401 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 446 transitions. [2021-11-02 12:59:39,087 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 446 transitions. Word has length 92 [2021-11-02 12:59:39,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:59:39,088 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 446 transitions. [2021-11-02 12:59:39,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:39,088 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 446 transitions. [2021-11-02 12:59:39,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 12:59:39,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:59:39,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:59:39,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-02 12:59:39,089 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:59:39,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:59:39,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1683476517, now seen corresponding path program 1 times [2021-11-02 12:59:39,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:59:39,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732597519] [2021-11-02 12:59:39,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:59:39,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:59:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:59:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:59:39,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:59:39,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732597519] [2021-11-02 12:59:39,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732597519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:59:39,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:59:39,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:59:39,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889431568] [2021-11-02 12:59:39,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:59:39,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:59:39,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:59:39,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:59:39,539 INFO L87 Difference]: Start difference. First operand 402 states and 446 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:42,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:59:48,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:59:48,836 INFO L93 Difference]: Finished difference Result 679 states and 766 transitions. [2021-11-02 12:59:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 12:59:48,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-02 12:59:48,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:59:48,838 INFO L225 Difference]: With dead ends: 679 [2021-11-02 12:59:48,838 INFO L226 Difference]: Without dead ends: 571 [2021-11-02 12:59:48,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1757.85ms TimeCoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2021-11-02 12:59:48,839 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 645 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 64 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7072.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.28ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7642.82ms IncrementalHoareTripleChecker+Time [2021-11-02 12:59:48,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 0 Invalid, 1700 Unknown, 0 Unchecked, 9.28ms Time], IncrementalHoareTripleChecker [64 Valid, 1635 Invalid, 1 Unknown, 0 Unchecked, 7642.82ms Time] [2021-11-02 12:59:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-11-02 12:59:48,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 440. [2021-11-02 12:59:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 431 states have (on average 1.1276102088167053) internal successors, (486), 439 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:48,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 486 transitions. [2021-11-02 12:59:48,861 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 486 transitions. Word has length 94 [2021-11-02 12:59:48,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:59:48,861 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 486 transitions. [2021-11-02 12:59:48,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:48,862 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 486 transitions. [2021-11-02 12:59:48,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 12:59:48,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:59:48,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:59:48,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-02 12:59:48,870 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:59:48,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:59:48,870 INFO L85 PathProgramCache]: Analyzing trace with hash -165511958, now seen corresponding path program 1 times [2021-11-02 12:59:48,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:59:48,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261665574] [2021-11-02 12:59:48,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:59:48,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:59:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:59:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:59:49,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:59:49,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261665574] [2021-11-02 12:59:49,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261665574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:59:49,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:59:49,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 12:59:49,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568690585] [2021-11-02 12:59:49,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 12:59:49,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:59:49,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 12:59:49,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:59:49,666 INFO L87 Difference]: Start difference. First operand 440 states and 486 transitions. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:51,865 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 [] [2021-11-02 12:59:59,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:59:59,137 INFO L93 Difference]: Finished difference Result 643 states and 700 transitions. [2021-11-02 12:59:59,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 12:59:59,137 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-02 12:59:59,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:59:59,139 INFO L225 Difference]: With dead ends: 643 [2021-11-02 12:59:59,139 INFO L226 Difference]: Without dead ends: 641 [2021-11-02 12:59:59,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1638.57ms TimeCoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2021-11-02 12:59:59,140 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 887 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7591.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.92ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8124.22ms IncrementalHoareTripleChecker+Time [2021-11-02 12:59:59,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [887 Valid, 0 Invalid, 1971 Unknown, 0 Unchecked, 17.92ms Time], IncrementalHoareTripleChecker [37 Valid, 1933 Invalid, 1 Unknown, 0 Unchecked, 8124.22ms Time] [2021-11-02 12:59:59,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-11-02 12:59:59,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 492. [2021-11-02 12:59:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 483 states have (on average 1.1180124223602483) internal successors, (540), 491 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 540 transitions. [2021-11-02 12:59:59,161 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 540 transitions. Word has length 94 [2021-11-02 12:59:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:59:59,162 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 540 transitions. [2021-11-02 12:59:59,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 540 transitions. [2021-11-02 12:59:59,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 12:59:59,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:59:59,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:59:59,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-02 12:59:59,163 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:59:59,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:59:59,168 INFO L85 PathProgramCache]: Analyzing trace with hash 312770715, now seen corresponding path program 1 times [2021-11-02 12:59:59,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:59:59,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718642082] [2021-11-02 12:59:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:59:59,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:59:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:59:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:59:59,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:59:59,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718642082] [2021-11-02 12:59:59,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718642082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:59:59,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:59:59,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 12:59:59,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414204607] [2021-11-02 12:59:59,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 12:59:59,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:59:59,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 12:59:59,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 12:59:59,309 INFO L87 Difference]: Start difference. First operand 492 states and 540 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:00:02,367 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:00:03,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:00:04,000 INFO L93 Difference]: Finished difference Result 679 states and 761 transitions. [2021-11-02 13:00:04,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 13:00:04,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-02 13:00:04,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:00:04,001 INFO L225 Difference]: With dead ends: 679 [2021-11-02 13:00:04,001 INFO L226 Difference]: Without dead ends: 494 [2021-11-02 13:00:04,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 13:00:04,002 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4189.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4649.51ms IncrementalHoareTripleChecker+Time [2021-11-02 13:00:04,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 396 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [0 Valid, 395 Invalid, 1 Unknown, 0 Unchecked, 4649.51ms Time] [2021-11-02 13:00:04,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-11-02 13:00:04,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 493. [2021-11-02 13:00:04,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 484 states have (on average 1.1177685950413223) internal successors, (541), 492 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:00:04,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 541 transitions. [2021-11-02 13:00:04,024 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 541 transitions. Word has length 94 [2021-11-02 13:00:04,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:00:04,024 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 541 transitions. [2021-11-02 13:00:04,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:00:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 541 transitions. [2021-11-02 13:00:04,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 13:00:04,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:00:04,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:00:04,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-02 13:00:04,026 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:00:04,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:00:04,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1830735274, now seen corresponding path program 1 times [2021-11-02 13:00:04,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:00:04,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324698699] [2021-11-02 13:00:04,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:00:04,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:00:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:00:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:00:04,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:00:04,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324698699] [2021-11-02 13:00:04,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324698699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:00:04,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:00:04,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:00:04,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702763246] [2021-11-02 13:00:04,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:00:04,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:00:04,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:00:04,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:00:04,439 INFO L87 Difference]: Start difference. First operand 493 states and 541 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:00:07,486 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:00:12,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:00:12,153 INFO L93 Difference]: Finished difference Result 671 states and 740 transitions. [2021-11-02 13:00:12,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 13:00:12,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-02 13:00:12,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:00:12,155 INFO L225 Difference]: With dead ends: 671 [2021-11-02 13:00:12,155 INFO L226 Difference]: Without dead ends: 620 [2021-11-02 13:00:12,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 443.36ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:00:12,156 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 382 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6781.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.50ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7358.44ms IncrementalHoareTripleChecker+Time [2021-11-02 13:00:12,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 0 Invalid, 1356 Unknown, 0 Unchecked, 10.50ms Time], IncrementalHoareTripleChecker [19 Valid, 1336 Invalid, 1 Unknown, 0 Unchecked, 7358.44ms Time] [2021-11-02 13:00:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-11-02 13:00:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 493. [2021-11-02 13:00:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 484 states have (on average 1.115702479338843) internal successors, (540), 492 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:00:12,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 540 transitions. [2021-11-02 13:00:12,211 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 540 transitions. Word has length 94 [2021-11-02 13:00:12,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:00:12,212 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 540 transitions. [2021-11-02 13:00:12,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:00:12,212 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 540 transitions. [2021-11-02 13:00:12,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 13:00:12,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:00:12,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:00:12,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-02 13:00:12,213 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:00:12,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:00:12,214 INFO L85 PathProgramCache]: Analyzing trace with hash 809666920, now seen corresponding path program 1 times [2021-11-02 13:00:12,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:00:12,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519342583] [2021-11-02 13:00:12,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:00:12,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:00:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:00:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:00:13,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:00:13,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519342583] [2021-11-02 13:00:13,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519342583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:00:13,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:00:13,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 13:00:13,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706870253] [2021-11-02 13:00:13,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 13:00:13,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:00:13,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 13:00:13,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:00:13,626 INFO L87 Difference]: Start difference. First operand 493 states and 540 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:00:16,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:00:22,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:00:22,507 INFO L93 Difference]: Finished difference Result 599 states and 652 transitions. [2021-11-02 13:00:22,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 13:00:22,508 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-02 13:00:22,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:00:22,510 INFO L225 Difference]: With dead ends: 599 [2021-11-02 13:00:22,510 INFO L226 Difference]: Without dead ends: 597 [2021-11-02 13:00:22,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 898.14ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-11-02 13:00:22,510 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 401 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7759.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.42ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8417.54ms IncrementalHoareTripleChecker+Time [2021-11-02 13:00:22,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 0 Invalid, 1379 Unknown, 0 Unchecked, 13.42ms Time], IncrementalHoareTripleChecker [16 Valid, 1362 Invalid, 1 Unknown, 0 Unchecked, 8417.54ms Time] [2021-11-02 13:00:22,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-02 13:00:22,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 476. [2021-11-02 13:00:22,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 467 states have (on average 1.1177730192719486) internal successors, (522), 475 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:00:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 522 transitions. [2021-11-02 13:00:22,541 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 522 transitions. Word has length 94 [2021-11-02 13:00:22,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:00:22,541 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 522 transitions. [2021-11-02 13:00:22,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:00:22,541 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 522 transitions. [2021-11-02 13:00:22,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 13:00:22,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:00:22,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:00:22,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-02 13:00:22,569 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:00:22,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:00:22,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2058968547, now seen corresponding path program 1 times [2021-11-02 13:00:22,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:00:22,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449258219] [2021-11-02 13:00:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:00:22,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:00:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:00:23,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:00:23,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:00:23,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449258219] [2021-11-02 13:00:23,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449258219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:00:23,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:00:23,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:00:23,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108042639] [2021-11-02 13:00:23,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:00:23,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:00:23,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:00:23,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:00:23,416 INFO L87 Difference]: Start difference. First operand 476 states and 522 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:00:25,468 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 [] [2021-11-02 13:00:27,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:00:27,641 INFO L93 Difference]: Finished difference Result 595 states and 651 transitions. [2021-11-02 13:00:27,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:00:27,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-02 13:00:27,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:00:27,643 INFO L225 Difference]: With dead ends: 595 [2021-11-02 13:00:27,643 INFO L226 Difference]: Without dead ends: 425 [2021-11-02 13:00:27,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 344.95ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:00:27,644 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 220 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3752.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.44ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4117.78ms IncrementalHoareTripleChecker+Time [2021-11-02 13:00:27,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 0 Invalid, 544 Unknown, 0 Unchecked, 4.44ms Time], IncrementalHoareTripleChecker [2 Valid, 541 Invalid, 1 Unknown, 0 Unchecked, 4117.78ms Time] [2021-11-02 13:00:27,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-11-02 13:00:27,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 384. [2021-11-02 13:00:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 375 states have (on average 1.112) internal successors, (417), 383 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:00:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 417 transitions. [2021-11-02 13:00:27,665 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 417 transitions. Word has length 94 [2021-11-02 13:00:27,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:00:27,667 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 417 transitions. [2021-11-02 13:00:27,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:00:27,667 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 417 transitions. [2021-11-02 13:00:27,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 13:00:27,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:00:27,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:00:27,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-02 13:00:27,668 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:00:27,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:00:27,669 INFO L85 PathProgramCache]: Analyzing trace with hash -466373153, now seen corresponding path program 1 times [2021-11-02 13:00:27,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:00:27,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306186847] [2021-11-02 13:00:27,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:00:27,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:00:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:00:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:00:32,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:00:32,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306186847] [2021-11-02 13:00:32,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306186847] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:00:32,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167949174] [2021-11-02 13:00:32,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:00:32,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:00:32,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:00:32,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:00:32,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 13:00:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:00:33,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-02 13:00:33,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:00:33,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 13:00:33,987 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 13:00:33,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-02 13:00:34,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-02 13:00:36,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-02 13:00:36,124 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-02 13:00:36,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2021-11-02 13:00:39,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 13:00:39,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2021-11-02 13:00:39,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:00:40,221 INFO L354 Elim1Store]: treesize reduction 397, result has 20.0 percent of original size [2021-11-02 13:00:40,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 87 treesize of output 156 [2021-11-02 13:00:54,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:00:55,069 INFO L354 Elim1Store]: treesize reduction 117, result has 10.7 percent of original size [2021-11-02 13:00:55,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 133 treesize of output 102 [2021-11-02 13:01:12,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:01:12,111 INFO L354 Elim1Store]: treesize reduction 115, result has 10.9 percent of original size [2021-11-02 13:01:12,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 154 treesize of output 115 [2021-11-02 13:01:20,984 INFO L354 Elim1Store]: treesize reduction 356, result has 22.4 percent of original size [2021-11-02 13:01:20,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 115 treesize of output 166 Killed by 15