./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_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 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 12:18:02,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 12:18:02,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 12:18:02,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 12:18:02,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 12:18:02,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 12:18:02,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 12:18:02,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 12:18:02,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 12:18:02,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 12:18:02,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 12:18:02,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 12:18:02,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 12:18:02,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 12:18:02,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 12:18:02,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 12:18:02,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 12:18:02,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 12:18:02,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 12:18:02,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 12:18:02,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 12:18:02,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 12:18:02,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 12:18:02,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 12:18:02,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 12:18:02,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 12:18:02,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 12:18:02,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 12:18:02,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 12:18:02,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 12:18:02,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 12:18:02,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 12:18:02,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 12:18:02,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 12:18:02,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 12:18:02,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 12:18:02,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 12:18:02,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 12:18:02,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 12:18:02,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 12:18:02,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 12:18:02,541 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 12:18:02,561 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 12:18:02,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 12:18:02,563 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 12:18:02,563 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 12:18:02,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 12:18:02,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 12:18:02,565 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 12:18:02,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 12:18:02,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 12:18:02,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 12:18:02,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 12:18:02,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 12:18:02,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 12:18:02,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 12:18:02,566 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 12:18:02,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 12:18:02,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 12:18:02,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 12:18:02,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 12:18:02,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:18:02,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 12:18:02,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 12:18:02,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 12:18:02,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 12:18:02,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 12:18:02,568 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 12:18:02,568 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 12:18:02,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 12:18:02,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 12:18:02,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d [2021-11-05 12:18:02,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 12:18:02,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 12:18:02,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 12:18:02,860 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 12:18:02,861 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 12:18:02,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2021-11-05 12:18:02,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88e0e5063/d5620d8ddf9a447295478f4c38d45e0d/FLAG85c324b48 [2021-11-05 12:18:03,498 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 12:18:03,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2021-11-05 12:18:03,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88e0e5063/d5620d8ddf9a447295478f4c38d45e0d/FLAG85c324b48 [2021-11-05 12:18:03,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88e0e5063/d5620d8ddf9a447295478f4c38d45e0d [2021-11-05 12:18:03,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 12:18:03,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 12:18:03,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 12:18:03,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 12:18:03,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 12:18:03,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:18:03" (1/1) ... [2021-11-05 12:18:03,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283e232a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:18:03, skipping insertion in model container [2021-11-05 12:18:03,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:18:03" (1/1) ... [2021-11-05 12:18:03,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 12:18:04,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 12:18:04,257 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_reserve_relative_harness.i[4503,4516] [2021-11-05 12:18:04,262 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_reserve_relative_harness.i[4563,4576] [2021-11-05 12:18:04,279 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:18:04,284 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:18:04,763 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:04,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:04,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:04,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:04,768 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:04,775 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:04,775 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:04,776 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:04,777 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:04,994 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:18:04,995 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:18:04,995 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:18:04,996 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:18:04,997 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:18:04,997 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:18:04,998 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:18:04,998 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:18:04,998 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:18:04,999 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:18:05,073 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:18:05,079 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,082 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,151 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,151 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:18:05,237 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 12:18:05,255 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_reserve_relative_harness.i[4503,4516] [2021-11-05 12:18:05,255 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_reserve_relative_harness.i[4563,4576] [2021-11-05 12:18:05,256 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:18:05,257 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:18:05,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,301 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,301 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,301 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,304 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,305 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,305 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,306 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,323 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:18:05,324 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:18:05,324 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:18:05,324 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:18:05,325 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:18:05,325 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:18:05,326 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:18:05,326 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:18:05,326 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:18:05,327 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:18:05,338 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:18:05,345 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,345 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,391 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,391 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:18:05,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:18:05,617 INFO L208 MainTranslator]: Completed translation [2021-11-05 12:18:05,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:18:05 WrapperNode [2021-11-05 12:18:05,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 12:18:05,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 12:18:05,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 12:18:05,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 12:18:05,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:18:05" (1/1) ... [2021-11-05 12:18:05,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:18:05" (1/1) ... [2021-11-05 12:18:05,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 12:18:05,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 12:18:05,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 12:18:05,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 12:18:05,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:18:05" (1/1) ... [2021-11-05 12:18:05,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:18:05" (1/1) ... [2021-11-05 12:18:05,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:18:05" (1/1) ... [2021-11-05 12:18:05,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:18:05" (1/1) ... [2021-11-05 12:18:05,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:18:05" (1/1) ... [2021-11-05 12:18:05,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:18:05" (1/1) ... [2021-11-05 12:18:05,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:18:05" (1/1) ... [2021-11-05 12:18:05,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 12:18:05,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 12:18:05,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 12:18:05,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 12:18:05,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:18:05" (1/1) ... [2021-11-05 12:18:05,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:18:05,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:18:05,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 12:18:05,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 12:18:05,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 12:18:05,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 12:18:05,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 12:18:05,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 12:18:05,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 12:18:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 12:18:05,986 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-05 12:18:05,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 12:18:05,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 12:18:05,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 12:18:05,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 12:18:05,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 12:18:13,878 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 12:18:13,878 INFO L299 CfgBuilder]: Removed 118 assume(true) statements. [2021-11-05 12:18:13,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:18:13 BoogieIcfgContainer [2021-11-05 12:18:13,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 12:18:13,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 12:18:13,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 12:18:13,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 12:18:13,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 12:18:03" (1/3) ... [2021-11-05 12:18:13,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acc268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:18:13, skipping insertion in model container [2021-11-05 12:18:13,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:18:05" (2/3) ... [2021-11-05 12:18:13,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acc268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:18:13, skipping insertion in model container [2021-11-05 12:18:13,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:18:13" (3/3) ... [2021-11-05 12:18:13,886 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_relative_harness.i [2021-11-05 12:18:13,889 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 12:18:13,890 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-05 12:18:13,922 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 12:18:13,926 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 12:18:13,927 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-05 12:18:13,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 224 states have (on average 1.4642857142857142) internal successors, (328), 231 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:13,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-05 12:18:13,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:13,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:13,945 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:18:13,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:13,949 INFO L85 PathProgramCache]: Analyzing trace with hash -473287577, now seen corresponding path program 1 times [2021-11-05 12:18:13,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:13,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328648932] [2021-11-05 12:18:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:13,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:14,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:14,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328648932] [2021-11-05 12:18:14,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328648932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:14,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:14,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 12:18:14,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689474257] [2021-11-05 12:18:14,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:14,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 12:18:14,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:14,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 12:18:14,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 12:18:14,416 INFO L87 Difference]: Start difference. First operand has 232 states, 224 states have (on average 1.4642857142857142) internal successors, (328), 231 states have internal predecessors, (328), 0 states have call successors, (0), 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 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:14,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:14,444 INFO L93 Difference]: Finished difference Result 457 states and 647 transitions. [2021-11-05 12:18:14,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 12:18:14,446 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-05 12:18:14,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:14,453 INFO L225 Difference]: With dead ends: 457 [2021-11-05 12:18:14,453 INFO L226 Difference]: Without dead ends: 227 [2021-11-05 12:18:14,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 12:18:14,458 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:14,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 2.25ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 12:18:14,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-05 12:18:14,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-05 12:18:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 220 states have (on average 1.3681818181818182) internal successors, (301), 226 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:14,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 301 transitions. [2021-11-05 12:18:14,492 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 301 transitions. Word has length 22 [2021-11-05 12:18:14,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:14,493 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 301 transitions. [2021-11-05 12:18:14,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:14,493 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 301 transitions. [2021-11-05 12:18:14,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-05 12:18:14,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:14,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:14,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 12:18:14,494 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:18:14,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:14,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2061635479, now seen corresponding path program 1 times [2021-11-05 12:18:14,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:14,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078145606] [2021-11-05 12:18:14,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:14,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:14,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:14,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:14,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078145606] [2021-11-05 12:18:14,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078145606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:14,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:14,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:18:14,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78284006] [2021-11-05 12:18:14,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:14,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:18:14,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:14,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:18:14,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:18:14,769 INFO L87 Difference]: Start difference. First operand 227 states and 301 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:15,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:15,021 INFO L93 Difference]: Finished difference Result 431 states and 571 transitions. [2021-11-05 12:18:15,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:18:15,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-05 12:18:15,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:15,024 INFO L225 Difference]: With dead ends: 431 [2021-11-05 12:18:15,024 INFO L226 Difference]: Without dead ends: 227 [2021-11-05 12:18:15,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.13ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:18:15,026 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 284 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 193.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.26ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 218.78ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:15,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 414 Invalid, 47 Unknown, 0 Unchecked, 5.26ms Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 218.78ms Time] [2021-11-05 12:18:15,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-05 12:18:15,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-05 12:18:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 220 states have (on average 1.3590909090909091) internal successors, (299), 226 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:15,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 299 transitions. [2021-11-05 12:18:15,053 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 299 transitions. Word has length 22 [2021-11-05 12:18:15,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:15,056 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 299 transitions. [2021-11-05 12:18:15,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:15,056 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 299 transitions. [2021-11-05 12:18:15,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-05 12:18:15,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:15,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:15,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 12:18:15,060 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:18:15,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:15,060 INFO L85 PathProgramCache]: Analyzing trace with hash 926477308, now seen corresponding path program 1 times [2021-11-05 12:18:15,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:15,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074412440] [2021-11-05 12:18:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:15,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:15,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:15,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:15,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074412440] [2021-11-05 12:18:15,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074412440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:15,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:15,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:18:15,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556843288] [2021-11-05 12:18:15,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:15,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:18:15,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:15,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:18:15,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:18:15,264 INFO L87 Difference]: Start difference. First operand 227 states and 299 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:15,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:15,716 INFO L93 Difference]: Finished difference Result 616 states and 829 transitions. [2021-11-05 12:18:15,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:18:15,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-05 12:18:15,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:15,718 INFO L225 Difference]: With dead ends: 616 [2021-11-05 12:18:15,718 INFO L226 Difference]: Without dead ends: 403 [2021-11-05 12:18:15,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.75ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:18:15,720 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 252 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 363.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.97ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 407.41ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:15,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 1022 Invalid, 173 Unknown, 0 Unchecked, 4.97ms Time], IncrementalHoareTripleChecker [29 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 407.41ms Time] [2021-11-05 12:18:15,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-11-05 12:18:15,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 243. [2021-11-05 12:18:15,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 236 states have (on average 1.3347457627118644) internal successors, (315), 242 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:15,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 315 transitions. [2021-11-05 12:18:15,734 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 315 transitions. Word has length 28 [2021-11-05 12:18:15,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:15,734 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 315 transitions. [2021-11-05 12:18:15,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:15,734 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 315 transitions. [2021-11-05 12:18:15,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-05 12:18:15,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:15,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:15,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 12:18:15,735 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:18:15,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:15,736 INFO L85 PathProgramCache]: Analyzing trace with hash -94591046, now seen corresponding path program 1 times [2021-11-05 12:18:15,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:15,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350896321] [2021-11-05 12:18:15,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:15,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:15,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:15,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350896321] [2021-11-05 12:18:15,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350896321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:15,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:15,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:18:15,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256920937] [2021-11-05 12:18:15,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:15,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:18:15,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:15,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:18:15,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:18:15,906 INFO L87 Difference]: Start difference. First operand 243 states and 315 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:16,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:16,345 INFO L93 Difference]: Finished difference Result 542 states and 711 transitions. [2021-11-05 12:18:16,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:18:16,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-05 12:18:16,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:16,347 INFO L225 Difference]: With dead ends: 542 [2021-11-05 12:18:16,347 INFO L226 Difference]: Without dead ends: 323 [2021-11-05 12:18:16,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:18:16,348 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 187 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 352.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.97ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 395.66ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:16,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 784 Invalid, 162 Unknown, 0 Unchecked, 3.97ms Time], IncrementalHoareTripleChecker [29 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 395.66ms Time] [2021-11-05 12:18:16,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-05 12:18:16,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 259. [2021-11-05 12:18:16,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 252 states have (on average 1.3134920634920635) internal successors, (331), 258 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 331 transitions. [2021-11-05 12:18:16,355 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 331 transitions. Word has length 28 [2021-11-05 12:18:16,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:16,355 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 331 transitions. [2021-11-05 12:18:16,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:16,356 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 331 transitions. [2021-11-05 12:18:16,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-05 12:18:16,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:16,357 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] [2021-11-05 12:18:16,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 12:18:16,357 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:18:16,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1374345282, now seen corresponding path program 1 times [2021-11-05 12:18:16,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:16,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290979984] [2021-11-05 12:18:16,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:16,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:16,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:16,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:16,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290979984] [2021-11-05 12:18:16,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290979984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:16,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:16,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:18:16,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901198080] [2021-11-05 12:18:16,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:16,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:18:16,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:16,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:18:16,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:18:16,673 INFO L87 Difference]: Start difference. First operand 259 states and 331 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:16,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:16,895 INFO L93 Difference]: Finished difference Result 530 states and 674 transitions. [2021-11-05 12:18:16,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:18:16,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-05 12:18:16,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:16,898 INFO L225 Difference]: With dead ends: 530 [2021-11-05 12:18:16,898 INFO L226 Difference]: Without dead ends: 497 [2021-11-05 12:18:16,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 123.07ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:18:16,899 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 350 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.73ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 129.74ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:16,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 1690 Invalid, 43 Unknown, 0 Unchecked, 2.73ms Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 129.74ms Time] [2021-11-05 12:18:16,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-11-05 12:18:16,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 261. [2021-11-05 12:18:16,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 254 states have (on average 1.311023622047244) internal successors, (333), 260 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:16,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 333 transitions. [2021-11-05 12:18:16,908 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 333 transitions. Word has length 28 [2021-11-05 12:18:16,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:16,908 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 333 transitions. [2021-11-05 12:18:16,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:16,908 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 333 transitions. [2021-11-05 12:18:16,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-05 12:18:16,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:16,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:16,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 12:18:16,910 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:18:16,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:16,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1363870332, now seen corresponding path program 1 times [2021-11-05 12:18:16,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:16,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371002685] [2021-11-05 12:18:16,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:16,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:17,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:17,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371002685] [2021-11-05 12:18:17,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371002685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:17,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:17,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:18:17,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444367693] [2021-11-05 12:18:17,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:17,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:18:17,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:17,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:18:17,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:18:17,252 INFO L87 Difference]: Start difference. First operand 261 states and 333 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 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) [2021-11-05 12:18:18,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:18,097 INFO L93 Difference]: Finished difference Result 412 states and 508 transitions. [2021-11-05 12:18:18,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:18:18,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 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 [2021-11-05 12:18:18,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:18,099 INFO L225 Difference]: With dead ends: 412 [2021-11-05 12:18:18,099 INFO L226 Difference]: Without dead ends: 395 [2021-11-05 12:18:18,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 204.96ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:18:18,100 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 273 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 634.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.99ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 686.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:18,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 1581 Invalid, 301 Unknown, 0 Unchecked, 6.99ms Time], IncrementalHoareTripleChecker [47 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 686.00ms Time] [2021-11-05 12:18:18,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-05 12:18:18,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 275. [2021-11-05 12:18:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 268 states have (on average 1.291044776119403) internal successors, (346), 274 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:18,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 346 transitions. [2021-11-05 12:18:18,107 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 346 transitions. Word has length 38 [2021-11-05 12:18:18,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:18,107 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 346 transitions. [2021-11-05 12:18:18,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 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) [2021-11-05 12:18:18,107 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 346 transitions. [2021-11-05 12:18:18,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-05 12:18:18,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:18,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:18,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 12:18:18,109 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:18:18,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:18,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1721724466, now seen corresponding path program 1 times [2021-11-05 12:18:18,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:18,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581171795] [2021-11-05 12:18:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:18,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:18,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:18,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:18,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581171795] [2021-11-05 12:18:18,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581171795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:18,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:18,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:18:18,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64797993] [2021-11-05 12:18:18,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:18,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:18:18,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:18,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:18:18,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:18:18,381 INFO L87 Difference]: Start difference. First operand 275 states and 346 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:18,636 INFO L93 Difference]: Finished difference Result 496 states and 623 transitions. [2021-11-05 12:18:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:18:18,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-05 12:18:18,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:18,638 INFO L225 Difference]: With dead ends: 496 [2021-11-05 12:18:18,638 INFO L226 Difference]: Without dead ends: 275 [2021-11-05 12:18:18,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 201.83ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:18:18,639 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 979 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.48ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 130.07ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:18,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 435 Invalid, 56 Unknown, 0 Unchecked, 2.48ms Time], IncrementalHoareTripleChecker [10 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 130.07ms Time] [2021-11-05 12:18:18,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-05 12:18:18,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2021-11-05 12:18:18,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 268 states have (on average 1.2835820895522387) internal successors, (344), 274 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:18,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 344 transitions. [2021-11-05 12:18:18,646 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 344 transitions. Word has length 40 [2021-11-05 12:18:18,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:18,646 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 344 transitions. [2021-11-05 12:18:18,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:18,647 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 344 transitions. [2021-11-05 12:18:18,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 12:18:18,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:18,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:18,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 12:18:18,648 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:18:18,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:18,648 INFO L85 PathProgramCache]: Analyzing trace with hash -378295308, now seen corresponding path program 1 times [2021-11-05 12:18:18,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:18,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821126466] [2021-11-05 12:18:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:18,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:18,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:18,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821126466] [2021-11-05 12:18:18,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821126466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:18,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:18,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:18:18,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671512435] [2021-11-05 12:18:18,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:18,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:18:18,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:18,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:18:18,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:18:18,979 INFO L87 Difference]: Start difference. First operand 275 states and 344 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:21,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:22,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:22,363 INFO L93 Difference]: Finished difference Result 782 states and 972 transitions. [2021-11-05 12:18:22,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:18:22,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-05 12:18:22,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:22,365 INFO L225 Difference]: With dead ends: 782 [2021-11-05 12:18:22,366 INFO L226 Difference]: Without dead ends: 528 [2021-11-05 12:18:22,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 102.33ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:18:22,366 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 694 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3089.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.29ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3269.11ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:22,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 856 Invalid, 378 Unknown, 0 Unchecked, 6.29ms Time], IncrementalHoareTripleChecker [45 Valid, 332 Invalid, 1 Unknown, 0 Unchecked, 3269.11ms Time] [2021-11-05 12:18:22,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-05 12:18:22,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 299. [2021-11-05 12:18:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 292 states have (on average 1.2602739726027397) internal successors, (368), 298 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:22,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 368 transitions. [2021-11-05 12:18:22,375 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 368 transitions. Word has length 42 [2021-11-05 12:18:22,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:22,384 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 368 transitions. [2021-11-05 12:18:22,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:22,384 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 368 transitions. [2021-11-05 12:18:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 12:18:22,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:22,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:22,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 12:18:22,386 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:18:22,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:22,386 INFO L85 PathProgramCache]: Analyzing trace with hash 301763062, now seen corresponding path program 1 times [2021-11-05 12:18:22,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:22,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293706311] [2021-11-05 12:18:22,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:22,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:24,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:24,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293706311] [2021-11-05 12:18:24,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293706311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:24,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:24,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:18:24,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539624895] [2021-11-05 12:18:24,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:24,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:18:24,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:24,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:18:24,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:18:24,647 INFO L87 Difference]: Start difference. First operand 299 states and 368 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:26,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:28,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:30,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:30,922 INFO L93 Difference]: Finished difference Result 860 states and 1059 transitions. [2021-11-05 12:18:30,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:18:30,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-05 12:18:30,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:30,925 INFO L225 Difference]: With dead ends: 860 [2021-11-05 12:18:30,925 INFO L226 Difference]: Without dead ends: 590 [2021-11-05 12:18:30,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 645.93ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:18:30,926 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 858 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5383.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.34ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5718.10ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:30,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 1699 Invalid, 531 Unknown, 0 Unchecked, 9.34ms Time], IncrementalHoareTripleChecker [30 Valid, 499 Invalid, 2 Unknown, 0 Unchecked, 5718.10ms Time] [2021-11-05 12:18:30,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-11-05 12:18:30,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 297. [2021-11-05 12:18:30,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 290 states have (on average 1.2586206896551724) internal successors, (365), 296 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:30,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 365 transitions. [2021-11-05 12:18:30,937 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 365 transitions. Word has length 42 [2021-11-05 12:18:30,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:30,937 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 365 transitions. [2021-11-05 12:18:30,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:30,937 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 365 transitions. [2021-11-05 12:18:30,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-05 12:18:30,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:30,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:30,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 12:18:30,938 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:18:30,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:30,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1878621098, now seen corresponding path program 1 times [2021-11-05 12:18:30,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:30,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826051856] [2021-11-05 12:18:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:30,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:31,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:31,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826051856] [2021-11-05 12:18:31,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826051856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:31,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:31,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:18:31,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282951093] [2021-11-05 12:18:31,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:31,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:18:31,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:31,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:18:31,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:18:31,360 INFO L87 Difference]: Start difference. First operand 297 states and 365 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:32,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:32,243 INFO L93 Difference]: Finished difference Result 691 states and 837 transitions. [2021-11-05 12:18:32,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:18:32,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-05 12:18:32,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:32,245 INFO L225 Difference]: With dead ends: 691 [2021-11-05 12:18:32,245 INFO L226 Difference]: Without dead ends: 420 [2021-11-05 12:18:32,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 198.38ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:18:32,246 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 187 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 703.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.69ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 747.98ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:32,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1629 Invalid, 361 Unknown, 0 Unchecked, 3.69ms Time], IncrementalHoareTripleChecker [48 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 747.98ms Time] [2021-11-05 12:18:32,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-05 12:18:32,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 297. [2021-11-05 12:18:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 290 states have (on average 1.2551724137931035) internal successors, (364), 296 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 364 transitions. [2021-11-05 12:18:32,258 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 364 transitions. Word has length 46 [2021-11-05 12:18:32,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:32,258 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 364 transitions. [2021-11-05 12:18:32,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:32,258 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 364 transitions. [2021-11-05 12:18:32,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 12:18:32,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:32,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:32,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 12:18:32,259 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:18:32,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:32,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1567331845, now seen corresponding path program 1 times [2021-11-05 12:18:32,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:32,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153262136] [2021-11-05 12:18:32,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:32,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:35,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:35,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153262136] [2021-11-05 12:18:35,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153262136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:35,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:35,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:18:35,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128698217] [2021-11-05 12:18:35,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:35,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:18:35,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:35,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:18:35,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:18:35,257 INFO L87 Difference]: Start difference. First operand 297 states and 364 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:37,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:39,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:39,917 INFO L93 Difference]: Finished difference Result 631 states and 776 transitions. [2021-11-05 12:18:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:18:39,918 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-05 12:18:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:39,920 INFO L225 Difference]: With dead ends: 631 [2021-11-05 12:18:39,920 INFO L226 Difference]: Without dead ends: 615 [2021-11-05 12:18:39,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 324.46ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:18:39,921 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 760 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4225.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.68ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4501.67ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:39,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 2555 Invalid, 816 Unknown, 0 Unchecked, 10.68ms Time], IncrementalHoareTripleChecker [25 Valid, 790 Invalid, 1 Unknown, 0 Unchecked, 4501.67ms Time] [2021-11-05 12:18:39,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-11-05 12:18:39,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 505. [2021-11-05 12:18:39,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 498 states have (on average 1.2610441767068272) internal successors, (628), 504 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 628 transitions. [2021-11-05 12:18:39,940 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 628 transitions. Word has length 48 [2021-11-05 12:18:39,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:39,940 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 628 transitions. [2021-11-05 12:18:39,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:39,941 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 628 transitions. [2021-11-05 12:18:39,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 12:18:39,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:39,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:39,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 12:18:39,942 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:18:39,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:39,943 INFO L85 PathProgramCache]: Analyzing trace with hash 134321663, now seen corresponding path program 1 times [2021-11-05 12:18:39,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:39,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060809484] [2021-11-05 12:18:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:39,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:40,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:40,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060809484] [2021-11-05 12:18:40,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060809484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:40,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:40,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:18:40,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290972345] [2021-11-05 12:18:40,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:40,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:18:40,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:40,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:18:40,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:18:40,533 INFO L87 Difference]: Start difference. First operand 505 states and 628 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:42,583 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:44,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:47,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:47,118 INFO L93 Difference]: Finished difference Result 978 states and 1212 transitions. [2021-11-05 12:18:47,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:18:47,118 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-05 12:18:47,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:47,121 INFO L225 Difference]: With dead ends: 978 [2021-11-05 12:18:47,121 INFO L226 Difference]: Without dead ends: 971 [2021-11-05 12:18:47,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 559.16ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:18:47,122 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 398 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5822.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.45ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6181.17ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:47,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 2533 Invalid, 797 Unknown, 0 Unchecked, 7.45ms Time], IncrementalHoareTripleChecker [26 Valid, 769 Invalid, 2 Unknown, 0 Unchecked, 6181.17ms Time] [2021-11-05 12:18:47,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2021-11-05 12:18:47,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 922. [2021-11-05 12:18:47,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 915 states have (on average 1.2644808743169398) internal successors, (1157), 921 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1157 transitions. [2021-11-05 12:18:47,144 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1157 transitions. Word has length 48 [2021-11-05 12:18:47,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:47,144 INFO L470 AbstractCegarLoop]: Abstraction has 922 states and 1157 transitions. [2021-11-05 12:18:47,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1157 transitions. [2021-11-05 12:18:47,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 12:18:47,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:47,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:47,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 12:18:47,145 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:18:47,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:47,146 INFO L85 PathProgramCache]: Analyzing trace with hash 814380033, now seen corresponding path program 1 times [2021-11-05 12:18:47,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:47,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580248493] [2021-11-05 12:18:47,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:47,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:47,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:47,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:47,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580248493] [2021-11-05 12:18:47,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580248493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:47,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:47,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:18:47,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743344480] [2021-11-05 12:18:47,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:47,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:18:47,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:47,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:18:47,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:18:47,404 INFO L87 Difference]: Start difference. First operand 922 states and 1157 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:49,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:50,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:50,643 INFO L93 Difference]: Finished difference Result 2236 states and 2814 transitions. [2021-11-05 12:18:50,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:18:50,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-05 12:18:50,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:50,659 INFO L225 Difference]: With dead ends: 2236 [2021-11-05 12:18:50,659 INFO L226 Difference]: Without dead ends: 1393 [2021-11-05 12:18:50,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 69.53ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:18:50,661 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 215 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2972.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.27ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3153.43ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:50,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 1166 Invalid, 364 Unknown, 0 Unchecked, 4.27ms Time], IncrementalHoareTripleChecker [36 Valid, 327 Invalid, 1 Unknown, 0 Unchecked, 3153.43ms Time] [2021-11-05 12:18:50,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-11-05 12:18:50,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 922. [2021-11-05 12:18:50,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 915 states have (on average 1.2382513661202186) internal successors, (1133), 921 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:50,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1133 transitions. [2021-11-05 12:18:50,687 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1133 transitions. Word has length 48 [2021-11-05 12:18:50,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:50,687 INFO L470 AbstractCegarLoop]: Abstraction has 922 states and 1133 transitions. [2021-11-05 12:18:50,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1133 transitions. [2021-11-05 12:18:50,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 12:18:50,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:50,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:50,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 12:18:50,688 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:18:50,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:50,689 INFO L85 PathProgramCache]: Analyzing trace with hash 156953917, now seen corresponding path program 1 times [2021-11-05 12:18:50,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:50,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111309200] [2021-11-05 12:18:50,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:50,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:54,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:54,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111309200] [2021-11-05 12:18:54,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111309200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:54,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:54,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:18:54,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221494465] [2021-11-05 12:18:54,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:54,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:18:54,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:54,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:18:54,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:18:54,192 INFO L87 Difference]: Start difference. First operand 922 states and 1133 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:56,234 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:59,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:59,017 INFO L93 Difference]: Finished difference Result 1144 states and 1396 transitions. [2021-11-05 12:18:59,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:18:59,018 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-05 12:18:59,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:59,021 INFO L225 Difference]: With dead ends: 1144 [2021-11-05 12:18:59,021 INFO L226 Difference]: Without dead ends: 1137 [2021-11-05 12:18:59,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 739.60ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:18:59,022 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 655 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4122.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.80ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4420.64ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:59,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 2206 Invalid, 762 Unknown, 0 Unchecked, 9.80ms Time], IncrementalHoareTripleChecker [26 Valid, 735 Invalid, 1 Unknown, 0 Unchecked, 4420.64ms Time] [2021-11-05 12:18:59,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-11-05 12:18:59,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 673. [2021-11-05 12:18:59,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 666 states have (on average 1.2402402402402402) internal successors, (826), 672 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:59,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 826 transitions. [2021-11-05 12:18:59,041 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 826 transitions. Word has length 48 [2021-11-05 12:18:59,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:59,041 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 826 transitions. [2021-11-05 12:18:59,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:59,042 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 826 transitions. [2021-11-05 12:18:59,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 12:18:59,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:59,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:59,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 12:18:59,042 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:18:59,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:59,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1376295925, now seen corresponding path program 1 times [2021-11-05 12:18:59,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:59,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533179336] [2021-11-05 12:18:59,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:59,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:59,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:59,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:59,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533179336] [2021-11-05 12:18:59,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533179336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:59,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:59,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:18:59,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370166076] [2021-11-05 12:18:59,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:59,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:18:59,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:59,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:18:59,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:18:59,186 INFO L87 Difference]: Start difference. First operand 673 states and 826 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:59,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:59,609 INFO L93 Difference]: Finished difference Result 1172 states and 1428 transitions. [2021-11-05 12:18:59,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:18:59,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-05 12:18:59,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:59,611 INFO L225 Difference]: With dead ends: 1172 [2021-11-05 12:18:59,611 INFO L226 Difference]: Without dead ends: 548 [2021-11-05 12:18:59,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:18:59,612 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 61 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 350.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.66ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 377.96ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:59,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 779 Invalid, 162 Unknown, 0 Unchecked, 1.66ms Time], IncrementalHoareTripleChecker [28 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 377.96ms Time] [2021-11-05 12:18:59,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-11-05 12:18:59,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 482. [2021-11-05 12:18:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 475 states have (on average 1.223157894736842) internal successors, (581), 481 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:59,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 581 transitions. [2021-11-05 12:18:59,626 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 581 transitions. Word has length 48 [2021-11-05 12:18:59,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:59,626 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 581 transitions. [2021-11-05 12:18:59,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 581 transitions. [2021-11-05 12:18:59,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-05 12:18:59,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:59,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:59,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 12:18:59,627 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:18:59,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:59,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1351206458, now seen corresponding path program 1 times [2021-11-05 12:18:59,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:59,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954046951] [2021-11-05 12:18:59,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:59,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:59,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:59,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954046951] [2021-11-05 12:18:59,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954046951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:59,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:59,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:18:59,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998024444] [2021-11-05 12:18:59,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:59,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:18:59,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:59,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:18:59,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:18:59,993 INFO L87 Difference]: Start difference. First operand 482 states and 581 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2021-11-05 12:19:01,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:01,593 INFO L93 Difference]: Finished difference Result 752 states and 893 transitions. [2021-11-05 12:19:01,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:19:01,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 [2021-11-05 12:19:01,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:01,595 INFO L225 Difference]: With dead ends: 752 [2021-11-05 12:19:01,595 INFO L226 Difference]: Without dead ends: 731 [2021-11-05 12:19:01,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 440.87ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:19:01,596 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 300 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1175.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.28ms SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1247.87ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:01,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 1947 Invalid, 611 Unknown, 0 Unchecked, 6.28ms Time], IncrementalHoareTripleChecker [106 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 1247.87ms Time] [2021-11-05 12:19:01,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-11-05 12:19:01,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 496. [2021-11-05 12:19:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 489 states have (on average 1.2147239263803682) internal successors, (594), 495 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:19:01,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 594 transitions. [2021-11-05 12:19:01,628 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 594 transitions. Word has length 50 [2021-11-05 12:19:01,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:01,629 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 594 transitions. [2021-11-05 12:19:01,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2021-11-05 12:19:01,629 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 594 transitions. [2021-11-05 12:19:01,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-05 12:19:01,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:01,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:01,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 12:19:01,630 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:19:01,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:01,630 INFO L85 PathProgramCache]: Analyzing trace with hash 541859832, now seen corresponding path program 1 times [2021-11-05 12:19:01,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:01,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211309369] [2021-11-05 12:19:01,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:01,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:19:02,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:02,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211309369] [2021-11-05 12:19:02,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211309369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:02,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:02,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:19:02,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272350912] [2021-11-05 12:19:02,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:02,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:19:02,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:02,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:19:02,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:19:02,203 INFO L87 Difference]: Start difference. First operand 496 states and 594 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 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) [2021-11-05 12:19:04,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:06,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:08,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:10,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:14,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:14,422 INFO L93 Difference]: Finished difference Result 891 states and 1034 transitions. [2021-11-05 12:19:14,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-05 12:19:14,422 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 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 [2021-11-05 12:19:14,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:14,424 INFO L225 Difference]: With dead ends: 891 [2021-11-05 12:19:14,424 INFO L226 Difference]: Without dead ends: 853 [2021-11-05 12:19:14,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 808.80ms TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-11-05 12:19:14,425 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 477 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 51 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10921.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.62ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11575.26ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:14,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 2542 Invalid, 1227 Unknown, 0 Unchecked, 10.62ms Time], IncrementalHoareTripleChecker [51 Valid, 1172 Invalid, 4 Unknown, 0 Unchecked, 11575.26ms Time] [2021-11-05 12:19:14,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-11-05 12:19:14,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 698. [2021-11-05 12:19:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 691 states have (on average 1.2141823444283646) internal successors, (839), 697 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:19:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 839 transitions. [2021-11-05 12:19:14,446 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 839 transitions. Word has length 50 [2021-11-05 12:19:14,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:14,446 INFO L470 AbstractCegarLoop]: Abstraction has 698 states and 839 transitions. [2021-11-05 12:19:14,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 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) [2021-11-05 12:19:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 839 transitions. [2021-11-05 12:19:14,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-05 12:19:14,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:14,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:14,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 12:19:14,447 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:19:14,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:14,448 INFO L85 PathProgramCache]: Analyzing trace with hash 816619446, now seen corresponding path program 1 times [2021-11-05 12:19:14,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:14,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79007730] [2021-11-05 12:19:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:14,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:17,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:19:17,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:17,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79007730] [2021-11-05 12:19:17,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79007730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:17,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:17,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-05 12:19:17,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336737627] [2021-11-05 12:19:17,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:17,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-05 12:19:17,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:17,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-05 12:19:17,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:19:17,269 INFO L87 Difference]: Start difference. First operand 698 states and 839 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 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) [2021-11-05 12:19:19,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:21,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:34,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:34,927 INFO L93 Difference]: Finished difference Result 1316 states and 1554 transitions. [2021-11-05 12:19:34,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-05 12:19:34,928 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 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 [2021-11-05 12:19:34,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:34,931 INFO L225 Difference]: With dead ends: 1316 [2021-11-05 12:19:34,931 INFO L226 Difference]: Without dead ends: 1253 [2021-11-05 12:19:34,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 5844.68ms TimeCoverageRelationStatistics Valid=941, Invalid=3889, Unknown=0, NotChecked=0, Total=4830 [2021-11-05 12:19:34,933 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 2556 mSDsluCounter, 4654 mSDsCounter, 0 mSdLazyCounter, 3065 mSolverCounterSat, 446 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11698.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2556 SdHoareTripleChecker+Valid, 5153 SdHoareTripleChecker+Invalid, 3513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.22ms SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 3065 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12393.36ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:34,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2556 Valid, 5153 Invalid, 3513 Unknown, 0 Unchecked, 33.22ms Time], IncrementalHoareTripleChecker [446 Valid, 3065 Invalid, 2 Unknown, 0 Unchecked, 12393.36ms Time] [2021-11-05 12:19:34,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2021-11-05 12:19:34,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 620. [2021-11-05 12:19:34,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 613 states have (on average 1.2185970636215335) internal successors, (747), 619 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:19:34,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 747 transitions. [2021-11-05 12:19:34,952 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 747 transitions. Word has length 50 [2021-11-05 12:19:34,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:34,952 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 747 transitions. [2021-11-05 12:19:34,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 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) [2021-11-05 12:19:34,952 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 747 transitions. [2021-11-05 12:19:34,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-05 12:19:34,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:34,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:34,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 12:19:34,954 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:19:34,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:34,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1408081534, now seen corresponding path program 1 times [2021-11-05 12:19:34,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:34,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641100757] [2021-11-05 12:19:34,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:34,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:19:35,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:35,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641100757] [2021-11-05 12:19:35,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641100757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:35,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:35,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:19:35,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63998523] [2021-11-05 12:19:35,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:35,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:19:35,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:35,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:19:35,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:19:35,205 INFO L87 Difference]: Start difference. First operand 620 states and 747 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) [2021-11-05 12:19:35,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:35,555 INFO L93 Difference]: Finished difference Result 879 states and 1034 transitions. [2021-11-05 12:19:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 12:19:35,556 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 [2021-11-05 12:19:35,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:35,558 INFO L225 Difference]: With dead ends: 879 [2021-11-05 12:19:35,558 INFO L226 Difference]: Without dead ends: 810 [2021-11-05 12:19:35,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 241.91ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:19:35,558 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 382 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 138.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.82ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 147.59ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:35,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 2205 Invalid, 58 Unknown, 0 Unchecked, 1.82ms Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 147.59ms Time] [2021-11-05 12:19:35,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2021-11-05 12:19:35,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 602. [2021-11-05 12:19:35,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 595 states have (on average 1.2084033613445377) internal successors, (719), 601 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:19:35,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 719 transitions. [2021-11-05 12:19:35,576 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 719 transitions. Word has length 56 [2021-11-05 12:19:35,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:35,577 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 719 transitions. [2021-11-05 12:19:35,577 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) [2021-11-05 12:19:35,577 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 719 transitions. [2021-11-05 12:19:35,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-05 12:19:35,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:35,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:35,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 12:19:35,578 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:19:35,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:35,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1914886215, now seen corresponding path program 1 times [2021-11-05 12:19:35,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:35,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844030704] [2021-11-05 12:19:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:35,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:35,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:19:35,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:35,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844030704] [2021-11-05 12:19:35,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844030704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:35,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:35,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:19:35,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430823099] [2021-11-05 12:19:35,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:35,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:19:35,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:35,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:19:35,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:19:35,756 INFO L87 Difference]: Start difference. First operand 602 states and 719 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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) [2021-11-05 12:19:35,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:35,876 INFO L93 Difference]: Finished difference Result 758 states and 893 transitions. [2021-11-05 12:19:35,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:19:35,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 [2021-11-05 12:19:35,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:35,878 INFO L225 Difference]: With dead ends: 758 [2021-11-05 12:19:35,878 INFO L226 Difference]: Without dead ends: 696 [2021-11-05 12:19:35,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 100.70ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:19:35,879 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 389 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.91ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.38ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:35,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 1093 Invalid, 16 Unknown, 0 Unchecked, 0.91ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 44.38ms Time] [2021-11-05 12:19:35,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-11-05 12:19:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 570. [2021-11-05 12:19:35,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 563 states have (on average 1.2078152753108349) internal successors, (680), 569 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:19:35,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 680 transitions. [2021-11-05 12:19:35,898 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 680 transitions. Word has length 62 [2021-11-05 12:19:35,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:35,898 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 680 transitions. [2021-11-05 12:19:35,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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) [2021-11-05 12:19:35,899 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 680 transitions. [2021-11-05 12:19:35,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-05 12:19:35,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:35,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:35,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 12:19:35,900 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:19:35,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:35,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1834524617, now seen corresponding path program 1 times [2021-11-05 12:19:35,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:35,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362070498] [2021-11-05 12:19:35,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:35,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:36,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:19:36,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:36,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362070498] [2021-11-05 12:19:36,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362070498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:36,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:36,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:19:36,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284405236] [2021-11-05 12:19:36,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:36,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:19:36,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:36,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:19:36,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:19:36,270 INFO L87 Difference]: Start difference. First operand 570 states and 680 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:19:36,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:36,700 INFO L93 Difference]: Finished difference Result 922 states and 1105 transitions. [2021-11-05 12:19:36,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:19:36,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-05 12:19:36,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:36,702 INFO L225 Difference]: With dead ends: 922 [2021-11-05 12:19:36,702 INFO L226 Difference]: Without dead ends: 570 [2021-11-05 12:19:36,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 391.34ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:19:36,703 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 1339 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 181.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 192.80ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:36,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1339 Valid, 464 Invalid, 81 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [20 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 192.80ms Time] [2021-11-05 12:19:36,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-11-05 12:19:36,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2021-11-05 12:19:36,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 563 states have (on average 1.191829484902309) internal successors, (671), 569 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:19:36,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 671 transitions. [2021-11-05 12:19:36,733 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 671 transitions. Word has length 63 [2021-11-05 12:19:36,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:36,733 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 671 transitions. [2021-11-05 12:19:36,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:19:36,734 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 671 transitions. [2021-11-05 12:19:36,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-05 12:19:36,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:36,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:36,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 12:19:36,735 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:19:36,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:36,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1289082123, now seen corresponding path program 1 times [2021-11-05 12:19:36,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:36,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002349525] [2021-11-05 12:19:36,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:36,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:19:37,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:37,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002349525] [2021-11-05 12:19:37,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002349525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:37,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:37,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:19:37,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177659838] [2021-11-05 12:19:37,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:37,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:19:37,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:37,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:19:37,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:19:37,375 INFO L87 Difference]: Start difference. First operand 570 states and 671 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:19:39,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:41,674 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:43,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:45,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:49,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:49,930 INFO L93 Difference]: Finished difference Result 1146 states and 1322 transitions. [2021-11-05 12:19:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 12:19:49,931 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-05 12:19:49,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:49,933 INFO L225 Difference]: With dead ends: 1146 [2021-11-05 12:19:49,933 INFO L226 Difference]: Without dead ends: 766 [2021-11-05 12:19:49,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1216.17ms TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-11-05 12:19:49,934 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 716 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 51 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10889.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.40ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11557.51ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:49,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 2288 Invalid, 1144 Unknown, 0 Unchecked, 11.40ms Time], IncrementalHoareTripleChecker [51 Valid, 1089 Invalid, 4 Unknown, 0 Unchecked, 11557.51ms Time] [2021-11-05 12:19:49,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-11-05 12:19:49,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 572. [2021-11-05 12:19:49,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 565 states have (on average 1.191150442477876) internal successors, (673), 571 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:19:49,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 673 transitions. [2021-11-05 12:19:49,950 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 673 transitions. Word has length 64 [2021-11-05 12:19:49,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:49,950 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 673 transitions. [2021-11-05 12:19:49,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:19:49,950 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 673 transitions. [2021-11-05 12:19:49,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-05 12:19:49,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:49,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:49,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 12:19:49,951 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:19:49,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:49,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1547247561, now seen corresponding path program 1 times [2021-11-05 12:19:49,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:49,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884064913] [2021-11-05 12:19:49,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:49,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:19:51,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:51,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884064913] [2021-11-05 12:19:51,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884064913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:51,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:51,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:19:51,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449533218] [2021-11-05 12:19:51,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:51,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:19:51,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:51,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:19:51,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:19:51,755 INFO L87 Difference]: Start difference. First operand 572 states and 673 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:19:53,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:55,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:58,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:59,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:59,947 INFO L93 Difference]: Finished difference Result 1150 states and 1338 transitions. [2021-11-05 12:19:59,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-05 12:19:59,947 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-05 12:19:59,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:59,949 INFO L225 Difference]: With dead ends: 1150 [2021-11-05 12:19:59,949 INFO L226 Difference]: Without dead ends: 660 [2021-11-05 12:19:59,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 860.39ms TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2021-11-05 12:19:59,950 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 872 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 30 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7061.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.99ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7478.38ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:59,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [872 Valid, 1540 Invalid, 500 Unknown, 0 Unchecked, 5.99ms Time], IncrementalHoareTripleChecker [30 Valid, 467 Invalid, 3 Unknown, 0 Unchecked, 7478.38ms Time] [2021-11-05 12:19:59,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-05 12:19:59,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 570. [2021-11-05 12:19:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 563 states have (on average 1.1882770870337478) internal successors, (669), 569 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:19:59,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 669 transitions. [2021-11-05 12:19:59,966 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 669 transitions. Word has length 64 [2021-11-05 12:19:59,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:59,967 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 669 transitions. [2021-11-05 12:19:59,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:19:59,967 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 669 transitions. [2021-11-05 12:19:59,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-05 12:19:59,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:59,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:59,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 12:19:59,968 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:19:59,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:59,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1614432707, now seen corresponding path program 1 times [2021-11-05 12:19:59,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:59,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766773375] [2021-11-05 12:19:59,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:59,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:20:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:20:00,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:20:00,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:20:00,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766773375] [2021-11-05 12:20:00,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766773375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:20:00,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:20:00,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:20:00,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115653503] [2021-11-05 12:20:00,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:20:00,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:20:00,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:20:00,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:20:00,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:20:00,349 INFO L87 Difference]: Start difference. First operand 570 states and 669 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:01,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:20:01,092 INFO L93 Difference]: Finished difference Result 1254 states and 1477 transitions. [2021-11-05 12:20:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:20:01,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-05 12:20:01,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:20:01,095 INFO L225 Difference]: With dead ends: 1254 [2021-11-05 12:20:01,095 INFO L226 Difference]: Without dead ends: 748 [2021-11-05 12:20:01,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 202.22ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:20:01,096 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 158 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 596.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.89ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 631.82ms IncrementalHoareTripleChecker+Time [2021-11-05 12:20:01,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 1710 Invalid, 315 Unknown, 0 Unchecked, 2.89ms Time], IncrementalHoareTripleChecker [39 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 631.82ms Time] [2021-11-05 12:20:01,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-11-05 12:20:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 556. [2021-11-05 12:20:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 549 states have (on average 1.1839708561020037) internal successors, (650), 555 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:01,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 650 transitions. [2021-11-05 12:20:01,112 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 650 transitions. Word has length 68 [2021-11-05 12:20:01,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:20:01,112 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 650 transitions. [2021-11-05 12:20:01,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:01,112 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 650 transitions. [2021-11-05 12:20:01,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-05 12:20:01,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:20:01,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:20:01,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-05 12:20:01,113 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:20:01,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:20:01,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1138480632, now seen corresponding path program 1 times [2021-11-05 12:20:01,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:20:01,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646801569] [2021-11-05 12:20:01,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:20:01,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:20:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:20:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:20:03,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:20:03,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646801569] [2021-11-05 12:20:03,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646801569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:20:03,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:20:03,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:20:03,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605563881] [2021-11-05 12:20:03,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:20:03,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:20:03,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:20:03,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:20:03,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:20:03,719 INFO L87 Difference]: Start difference. First operand 556 states and 650 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:05,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:07,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:08,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:20:08,570 INFO L93 Difference]: Finished difference Result 1107 states and 1294 transitions. [2021-11-05 12:20:08,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:20:08,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-05 12:20:08,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:20:08,572 INFO L225 Difference]: With dead ends: 1107 [2021-11-05 12:20:08,572 INFO L226 Difference]: Without dead ends: 556 [2021-11-05 12:20:08,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 326.97ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:20:08,576 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 316 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4353.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.36ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4703.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:20:08,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 1243 Invalid, 115 Unknown, 0 Unchecked, 2.36ms Time], IncrementalHoareTripleChecker [4 Valid, 109 Invalid, 2 Unknown, 0 Unchecked, 4703.00ms Time] [2021-11-05 12:20:08,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-11-05 12:20:08,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2021-11-05 12:20:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 549 states have (on average 1.1821493624772312) internal successors, (649), 555 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:08,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 649 transitions. [2021-11-05 12:20:08,606 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 649 transitions. Word has length 70 [2021-11-05 12:20:08,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:20:08,606 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 649 transitions. [2021-11-05 12:20:08,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:08,607 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 649 transitions. [2021-11-05 12:20:08,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-05 12:20:08,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:20:08,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:20:08,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-05 12:20:08,608 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:20:08,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:20:08,609 INFO L85 PathProgramCache]: Analyzing trace with hash 752019653, now seen corresponding path program 1 times [2021-11-05 12:20:08,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:20:08,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154082888] [2021-11-05 12:20:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:20:08,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:20:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:20:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:20:12,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:20:12,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154082888] [2021-11-05 12:20:12,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154082888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:20:12,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:20:12,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:20:12,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891099997] [2021-11-05 12:20:12,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:20:12,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:20:12,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:20:12,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:20:12,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:20:12,739 INFO L87 Difference]: Start difference. First operand 556 states and 649 transitions. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:14,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:16,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:19,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:21,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:22,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:20:22,778 INFO L93 Difference]: Finished difference Result 590 states and 678 transitions. [2021-11-05 12:20:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:20:22,779 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-05 12:20:22,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:20:22,780 INFO L225 Difference]: With dead ends: 590 [2021-11-05 12:20:22,780 INFO L226 Difference]: Without dead ends: 574 [2021-11-05 12:20:22,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 466.53ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:20:22,781 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 800 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 25 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9267.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.00ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9844.63ms IncrementalHoareTripleChecker+Time [2021-11-05 12:20:22,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 1623 Invalid, 553 Unknown, 0 Unchecked, 6.00ms Time], IncrementalHoareTripleChecker [25 Valid, 524 Invalid, 4 Unknown, 0 Unchecked, 9844.63ms Time] [2021-11-05 12:20:22,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-11-05 12:20:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 545. [2021-11-05 12:20:22,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 538 states have (on average 1.1802973977695168) internal successors, (635), 544 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 635 transitions. [2021-11-05 12:20:22,802 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 635 transitions. Word has length 71 [2021-11-05 12:20:22,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:20:22,802 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 635 transitions. [2021-11-05 12:20:22,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:22,803 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 635 transitions. [2021-11-05 12:20:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-05 12:20:22,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:20:22,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:20:22,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-05 12:20:22,804 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:20:22,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:20:22,804 INFO L85 PathProgramCache]: Analyzing trace with hash -680990529, now seen corresponding path program 1 times [2021-11-05 12:20:22,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:20:22,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035039477] [2021-11-05 12:20:22,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:20:22,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:20:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:20:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:20:23,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:20:23,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035039477] [2021-11-05 12:20:23,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035039477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:20:23,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:20:23,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:20:23,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413411544] [2021-11-05 12:20:23,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:20:23,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:20:23,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:20:23,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:20:23,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:20:23,386 INFO L87 Difference]: Start difference. First operand 545 states and 635 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:25,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:27,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:29,673 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:32,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:20:32,865 INFO L93 Difference]: Finished difference Result 720 states and 817 transitions. [2021-11-05 12:20:32,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 12:20:32,866 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-05 12:20:32,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:20:32,867 INFO L225 Difference]: With dead ends: 720 [2021-11-05 12:20:32,868 INFO L226 Difference]: Without dead ends: 713 [2021-11-05 12:20:32,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 943.55ms TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2021-11-05 12:20:32,868 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 614 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 43 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8254.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.53ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8746.39ms IncrementalHoareTripleChecker+Time [2021-11-05 12:20:32,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 2296 Invalid, 1019 Unknown, 0 Unchecked, 8.53ms Time], IncrementalHoareTripleChecker [43 Valid, 973 Invalid, 3 Unknown, 0 Unchecked, 8746.39ms Time] [2021-11-05 12:20:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-05 12:20:32,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 554. [2021-11-05 12:20:32,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 547 states have (on average 1.1773308957952469) internal successors, (644), 553 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:32,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 644 transitions. [2021-11-05 12:20:32,886 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 644 transitions. Word has length 71 [2021-11-05 12:20:32,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:20:32,886 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 644 transitions. [2021-11-05 12:20:32,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:32,886 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 644 transitions. [2021-11-05 12:20:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-05 12:20:32,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:20:32,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:20:32,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-05 12:20:32,887 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:20:32,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:20:32,888 INFO L85 PathProgramCache]: Analyzing trace with hash 857349501, now seen corresponding path program 1 times [2021-11-05 12:20:32,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:20:32,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003373502] [2021-11-05 12:20:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:20:32,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:20:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:20:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:20:33,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:20:33,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003373502] [2021-11-05 12:20:33,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003373502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:20:33,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:20:33,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:20:33,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301276728] [2021-11-05 12:20:33,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:20:33,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:20:33,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:20:33,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:20:33,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:20:33,362 INFO L87 Difference]: Start difference. First operand 554 states and 644 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:35,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:37,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:39,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:41,708 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:43,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:20:43,930 INFO L93 Difference]: Finished difference Result 1093 states and 1260 transitions. [2021-11-05 12:20:43,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 12:20:43,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-05 12:20:43,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:20:43,932 INFO L225 Difference]: With dead ends: 1093 [2021-11-05 12:20:43,932 INFO L226 Difference]: Without dead ends: 679 [2021-11-05 12:20:43,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 555.89ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:20:43,933 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 465 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 26 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9553.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.29ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10096.05ms IncrementalHoareTripleChecker+Time [2021-11-05 12:20:43,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 2078 Invalid, 701 Unknown, 0 Unchecked, 6.29ms Time], IncrementalHoareTripleChecker [26 Valid, 671 Invalid, 4 Unknown, 0 Unchecked, 10096.05ms Time] [2021-11-05 12:20:43,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-11-05 12:20:43,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 554. [2021-11-05 12:20:43,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 547 states have (on average 1.1755027422303475) internal successors, (643), 553 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 643 transitions. [2021-11-05 12:20:43,949 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 643 transitions. Word has length 71 [2021-11-05 12:20:43,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:20:43,949 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 643 transitions. [2021-11-05 12:20:43,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:43,949 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 643 transitions. [2021-11-05 12:20:43,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-05 12:20:43,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:20:43,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:20:43,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-05 12:20:43,950 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:20:43,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:20:43,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1558949375, now seen corresponding path program 1 times [2021-11-05 12:20:43,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:20:43,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515845993] [2021-11-05 12:20:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:20:43,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:20:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:20:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:20:48,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:20:48,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515845993] [2021-11-05 12:20:48,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515845993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:20:48,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:20:48,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:20:48,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753020559] [2021-11-05 12:20:48,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:20:48,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:20:48,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:20:48,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:20:48,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:20:48,335 INFO L87 Difference]: Start difference. First operand 554 states and 643 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:50,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:52,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:54,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:56,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:58,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:01,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:21:01,897 INFO L93 Difference]: Finished difference Result 582 states and 666 transitions. [2021-11-05 12:21:01,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-05 12:21:01,898 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-05 12:21:01,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:21:01,899 INFO L225 Difference]: With dead ends: 582 [2021-11-05 12:21:01,899 INFO L226 Difference]: Without dead ends: 575 [2021-11-05 12:21:01,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1316.33ms TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2021-11-05 12:21:01,900 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 695 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 23 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11954.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.63ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12671.94ms IncrementalHoareTripleChecker+Time [2021-11-05 12:21:01,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 2042 Invalid, 702 Unknown, 0 Unchecked, 8.63ms Time], IncrementalHoareTripleChecker [23 Valid, 674 Invalid, 5 Unknown, 0 Unchecked, 12671.94ms Time] [2021-11-05 12:21:01,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-11-05 12:21:01,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2021-11-05 12:21:01,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 538 states have (on average 1.1765799256505576) internal successors, (633), 544 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:21:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 633 transitions. [2021-11-05 12:21:01,923 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 633 transitions. Word has length 71 [2021-11-05 12:21:01,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:21:01,923 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 633 transitions. [2021-11-05 12:21:01,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:21:01,923 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 633 transitions. [2021-11-05 12:21:01,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-05 12:21:01,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:21:01,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:21:01,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-05 12:21:01,924 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:21:01,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:21:01,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1289124232, now seen corresponding path program 1 times [2021-11-05 12:21:01,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:21:01,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947603546] [2021-11-05 12:21:01,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:21:01,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:21:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:21:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:21:02,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:21:02,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947603546] [2021-11-05 12:21:02,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947603546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:21:02,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:21:02,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:21:02,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577492495] [2021-11-05 12:21:02,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:21:02,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:21:02,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:21:02,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:21:02,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:21:02,532 INFO L87 Difference]: Start difference. First operand 545 states and 633 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 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) [2021-11-05 12:21:04,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:06,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:08,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:11,041 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:13,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:16,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:21:16,601 INFO L93 Difference]: Finished difference Result 1103 states and 1261 transitions. [2021-11-05 12:21:16,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 12:21:16,602 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 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 [2021-11-05 12:21:16,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:21:16,603 INFO L225 Difference]: With dead ends: 1103 [2021-11-05 12:21:16,603 INFO L226 Difference]: Without dead ends: 724 [2021-11-05 12:21:16,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1010.69ms TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2021-11-05 12:21:16,605 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 621 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 45 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12452.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.07ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13268.72ms IncrementalHoareTripleChecker+Time [2021-11-05 12:21:16,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 2311 Invalid, 1107 Unknown, 0 Unchecked, 9.07ms Time], IncrementalHoareTripleChecker [45 Valid, 1057 Invalid, 5 Unknown, 0 Unchecked, 13268.72ms Time] [2021-11-05 12:21:16,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-11-05 12:21:16,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 545. [2021-11-05 12:21:16,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 538 states have (on average 1.1728624535315986) internal successors, (631), 544 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:21:16,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 631 transitions. [2021-11-05 12:21:16,625 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 631 transitions. Word has length 73 [2021-11-05 12:21:16,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:21:16,626 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 631 transitions. [2021-11-05 12:21:16,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 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) [2021-11-05 12:21:16,626 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 631 transitions. [2021-11-05 12:21:16,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-05 12:21:16,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:21:16,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:21:16,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-05 12:21:16,627 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:21:16,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:21:16,627 INFO L85 PathProgramCache]: Analyzing trace with hash -485491784, now seen corresponding path program 1 times [2021-11-05 12:21:16,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:21:16,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061193979] [2021-11-05 12:21:16,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:21:16,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:21:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:21:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:21:19,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:21:19,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061193979] [2021-11-05 12:21:19,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061193979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:21:19,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:21:19,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:21:19,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996318784] [2021-11-05 12:21:19,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:21:19,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:21:19,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:21:19,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:21:19,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:21:19,308 INFO L87 Difference]: Start difference. First operand 545 states and 631 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 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) [2021-11-05 12:21:21,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:23,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:25,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:30,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:21:30,860 INFO L93 Difference]: Finished difference Result 763 states and 883 transitions. [2021-11-05 12:21:30,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-05 12:21:30,860 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 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 [2021-11-05 12:21:30,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:21:30,862 INFO L225 Difference]: With dead ends: 763 [2021-11-05 12:21:30,862 INFO L226 Difference]: Without dead ends: 745 [2021-11-05 12:21:30,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 2529.00ms TimeCoverageRelationStatistics Valid=423, Invalid=1557, Unknown=0, NotChecked=0, Total=1980 [2021-11-05 12:21:30,863 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1047 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 156 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8732.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.33ms SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9262.63ms IncrementalHoareTripleChecker+Time [2021-11-05 12:21:30,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1047 Valid, 2471 Invalid, 1236 Unknown, 0 Unchecked, 14.33ms Time], IncrementalHoareTripleChecker [156 Valid, 1077 Invalid, 3 Unknown, 0 Unchecked, 9262.63ms Time] [2021-11-05 12:21:30,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-11-05 12:21:30,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 527. [2021-11-05 12:21:30,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 521 states have (on average 1.1765834932821497) internal successors, (613), 526 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:21:30,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 613 transitions. [2021-11-05 12:21:30,883 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 613 transitions. Word has length 73 [2021-11-05 12:21:30,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:21:30,883 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 613 transitions. [2021-11-05 12:21:30,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 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) [2021-11-05 12:21:30,884 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 613 transitions. [2021-11-05 12:21:30,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-05 12:21:30,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:21:30,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:21:30,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-05 12:21:30,885 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:21:30,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:21:30,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1056511684, now seen corresponding path program 1 times [2021-11-05 12:21:30,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:21:30,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779707458] [2021-11-05 12:21:30,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:21:30,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:21:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:21:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:21:33,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:21:33,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779707458] [2021-11-05 12:21:33,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779707458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:21:33,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:21:33,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:21:33,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113155485] [2021-11-05 12:21:33,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:21:33,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:21:33,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:21:33,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:21:33,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:21:33,271 INFO L87 Difference]: Start difference. First operand 527 states and 613 transitions. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:21:35,313 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:37,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:39,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:41,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:43,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:45,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:47,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:21:47,648 INFO L93 Difference]: Finished difference Result 960 states and 1107 transitions. [2021-11-05 12:21:47,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:21:47,649 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-05 12:21:47,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:21:47,651 INFO L225 Difference]: With dead ends: 960 [2021-11-05 12:21:47,651 INFO L226 Difference]: Without dead ends: 929 [2021-11-05 12:21:47,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 942.83ms TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:21:47,652 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1171 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 47 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13003.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.40ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13784.87ms IncrementalHoareTripleChecker+Time [2021-11-05 12:21:47,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 1722 Invalid, 344 Unknown, 0 Unchecked, 5.40ms Time], IncrementalHoareTripleChecker [47 Valid, 291 Invalid, 6 Unknown, 0 Unchecked, 13784.87ms Time] [2021-11-05 12:21:47,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-11-05 12:21:47,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 525. [2021-11-05 12:21:47,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 519 states have (on average 1.1753371868978806) internal successors, (610), 524 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:21:47,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 610 transitions. [2021-11-05 12:21:47,676 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 610 transitions. Word has length 77 [2021-11-05 12:21:47,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:21:47,676 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 610 transitions. [2021-11-05 12:21:47,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:21:47,676 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 610 transitions. [2021-11-05 12:21:47,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 12:21:47,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:21:47,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:21:47,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-05 12:21:47,678 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:21:47,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:21:47,678 INFO L85 PathProgramCache]: Analyzing trace with hash -330775101, now seen corresponding path program 1 times [2021-11-05 12:21:47,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:21:47,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30344627] [2021-11-05 12:21:47,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:21:47,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:21:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:21:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:21:50,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:21:50,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30344627] [2021-11-05 12:21:50,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30344627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:21:50,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:21:50,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:21:50,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842572085] [2021-11-05 12:21:50,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:21:50,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:21:50,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:21:50,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:21:50,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:21:50,011 INFO L87 Difference]: Start difference. First operand 525 states and 610 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:21:52,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:54,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:56,318 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:58,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:00,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:22:05,233 INFO L93 Difference]: Finished difference Result 1409 states and 1624 transitions. [2021-11-05 12:22:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-05 12:22:05,233 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-05 12:22:05,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:22:05,236 INFO L225 Difference]: With dead ends: 1409 [2021-11-05 12:22:05,236 INFO L226 Difference]: Without dead ends: 1054 [2021-11-05 12:22:05,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 2939.51ms TimeCoverageRelationStatistics Valid=393, Invalid=1329, Unknown=0, NotChecked=0, Total=1722 [2021-11-05 12:22:05,237 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 1717 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 96 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11844.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.97ms SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12571.60ms IncrementalHoareTripleChecker+Time [2021-11-05 12:22:05,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1717 Valid, 1763 Invalid, 822 Unknown, 0 Unchecked, 9.97ms Time], IncrementalHoareTripleChecker [96 Valid, 721 Invalid, 5 Unknown, 0 Unchecked, 12571.60ms Time] [2021-11-05 12:22:05,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2021-11-05 12:22:05,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 531. [2021-11-05 12:22:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 525 states have (on average 1.1752380952380952) internal successors, (617), 530 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:22:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 617 transitions. [2021-11-05 12:22:05,261 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 617 transitions. Word has length 86 [2021-11-05 12:22:05,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:22:05,262 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 617 transitions. [2021-11-05 12:22:05,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:22:05,262 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 617 transitions. [2021-11-05 12:22:05,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-05 12:22:05,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:22:05,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:22:05,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-05 12:22:05,263 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:22:05,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:22:05,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1242647049, now seen corresponding path program 1 times [2021-11-05 12:22:05,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:22:05,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101134683] [2021-11-05 12:22:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:22:05,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:22:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:22:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:22:05,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:22:05,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101134683] [2021-11-05 12:22:05,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101134683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:22:05,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:22:05,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:22:05,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745160187] [2021-11-05 12:22:05,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:22:05,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:22:05,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:22:05,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:22:05,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:22:05,642 INFO L87 Difference]: Start difference. First operand 531 states and 617 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:22:06,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:22:06,379 INFO L93 Difference]: Finished difference Result 978 states and 1138 transitions. [2021-11-05 12:22:06,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:22:06,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-05 12:22:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:22:06,381 INFO L225 Difference]: With dead ends: 978 [2021-11-05 12:22:06,381 INFO L226 Difference]: Without dead ends: 601 [2021-11-05 12:22:06,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 204.62ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:22:06,382 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 96 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 563.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.52ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 593.86ms IncrementalHoareTripleChecker+Time [2021-11-05 12:22:06,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1230 Invalid, 240 Unknown, 0 Unchecked, 2.52ms Time], IncrementalHoareTripleChecker [29 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 593.86ms Time] [2021-11-05 12:22:06,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-11-05 12:22:06,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 522. [2021-11-05 12:22:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 516 states have (on average 1.1666666666666667) internal successors, (602), 521 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:22:06,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 602 transitions. [2021-11-05 12:22:06,404 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 602 transitions. Word has length 90 [2021-11-05 12:22:06,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:22:06,404 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 602 transitions. [2021-11-05 12:22:06,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:22:06,404 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 602 transitions. [2021-11-05 12:22:06,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-05 12:22:06,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:22:06,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:22:06,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-05 12:22:06,405 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:22:06,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:22:06,406 INFO L85 PathProgramCache]: Analyzing trace with hash -511953164, now seen corresponding path program 1 times [2021-11-05 12:22:06,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:22:06,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125995022] [2021-11-05 12:22:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:22:06,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:22:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:22:10,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:22:10,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:22:10,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125995022] [2021-11-05 12:22:10,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125995022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:22:10,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:22:10,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-05 12:22:10,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691157670] [2021-11-05 12:22:10,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:22:10,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 12:22:10,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:22:10,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 12:22:10,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:22:10,967 INFO L87 Difference]: Start difference. First operand 522 states and 602 transitions. Second operand has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:22:13,011 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:15,137 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:17,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:19,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:21,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:23,635 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:28,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:22:28,524 INFO L93 Difference]: Finished difference Result 925 states and 1052 transitions. [2021-11-05 12:22:28,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-05 12:22:28,524 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-05 12:22:28,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:22:28,526 INFO L225 Difference]: With dead ends: 925 [2021-11-05 12:22:28,526 INFO L226 Difference]: Without dead ends: 806 [2021-11-05 12:22:28,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 2920.23ms TimeCoverageRelationStatistics Valid=348, Invalid=1134, Unknown=0, NotChecked=0, Total=1482 [2021-11-05 12:22:28,528 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1865 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 98 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14494.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.94ms SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15392.99ms IncrementalHoareTripleChecker+Time [2021-11-05 12:22:28,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1865 Valid, 2061 Invalid, 1029 Unknown, 0 Unchecked, 11.94ms Time], IncrementalHoareTripleChecker [98 Valid, 925 Invalid, 6 Unknown, 0 Unchecked, 15392.99ms Time] [2021-11-05 12:22:28,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-11-05 12:22:28,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 492. [2021-11-05 12:22:28,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 486 states have (on average 1.1563786008230452) internal successors, (562), 491 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:22:28,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 562 transitions. [2021-11-05 12:22:28,555 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 562 transitions. Word has length 92 [2021-11-05 12:22:28,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:22:28,555 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 562 transitions. [2021-11-05 12:22:28,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:22:28,555 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 562 transitions. [2021-11-05 12:22:28,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-05 12:22:28,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:22:28,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:22:28,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-05 12:22:28,557 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:22:28,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:22:28,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1944963346, now seen corresponding path program 1 times [2021-11-05 12:22:28,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:22:28,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454561366] [2021-11-05 12:22:28,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:22:28,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:22:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:22:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:22:29,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:22:29,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454561366] [2021-11-05 12:22:29,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454561366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:22:29,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:22:29,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:22:29,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089531077] [2021-11-05 12:22:29,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:22:29,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:22:29,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:22:29,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:22:29,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:22:29,090 INFO L87 Difference]: Start difference. First operand 492 states and 562 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 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) [2021-11-05 12:22:31,131 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:33,241 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:35,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:22:35,206 INFO L93 Difference]: Finished difference Result 876 states and 999 transitions. [2021-11-05 12:22:35,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:22:35,206 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 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 [2021-11-05 12:22:35,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:22:35,208 INFO L225 Difference]: With dead ends: 876 [2021-11-05 12:22:35,208 INFO L226 Difference]: Without dead ends: 791 [2021-11-05 12:22:35,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 527.80ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:22:35,209 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 506 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 45 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5369.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.84ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5691.50ms IncrementalHoareTripleChecker+Time [2021-11-05 12:22:35,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 1517 Invalid, 584 Unknown, 0 Unchecked, 5.84ms Time], IncrementalHoareTripleChecker [45 Valid, 537 Invalid, 2 Unknown, 0 Unchecked, 5691.50ms Time] [2021-11-05 12:22:35,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-11-05 12:22:35,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 638. [2021-11-05 12:22:35,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 632 states have (on average 1.1693037974683544) internal successors, (739), 637 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:22:35,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 739 transitions. [2021-11-05 12:22:35,244 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 739 transitions. Word has length 92 [2021-11-05 12:22:35,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:22:35,244 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 739 transitions. [2021-11-05 12:22:35,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 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) [2021-11-05 12:22:35,244 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 739 transitions. [2021-11-05 12:22:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-05 12:22:35,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:22:35,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:22:35,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-05 12:22:35,246 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:22:35,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:22:35,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1804414736, now seen corresponding path program 1 times [2021-11-05 12:22:35,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:22:35,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581410868] [2021-11-05 12:22:35,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:22:35,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:22:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:22:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:22:36,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:22:36,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581410868] [2021-11-05 12:22:36,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581410868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:22:36,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:22:36,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 12:22:36,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796698812] [2021-11-05 12:22:36,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:22:36,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 12:22:36,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:22:36,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 12:22:36,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:22:36,492 INFO L87 Difference]: Start difference. First operand 638 states and 739 transitions. Second operand has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 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) [2021-11-05 12:22:38,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:40,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:42,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:44,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:47,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:49,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:55,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:22:55,984 INFO L93 Difference]: Finished difference Result 1568 states and 1782 transitions. [2021-11-05 12:22:55,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-05 12:22:55,984 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 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 [2021-11-05 12:22:55,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:22:55,987 INFO L225 Difference]: With dead ends: 1568 [2021-11-05 12:22:55,987 INFO L226 Difference]: Without dead ends: 1274 [2021-11-05 12:22:55,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 3554.82ms TimeCoverageRelationStatistics Valid=574, Invalid=2182, Unknown=0, NotChecked=0, Total=2756 [2021-11-05 12:22:55,988 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 1785 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 135 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15417.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1785 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.17ms SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16415.57ms IncrementalHoareTripleChecker+Time [2021-11-05 12:22:55,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1785 Valid, 2631 Invalid, 1419 Unknown, 0 Unchecked, 16.17ms Time], IncrementalHoareTripleChecker [135 Valid, 1278 Invalid, 6 Unknown, 0 Unchecked, 16415.57ms Time] [2021-11-05 12:22:55,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-11-05 12:22:56,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 703. [2021-11-05 12:22:56,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 697 states have (on average 1.157819225251076) internal successors, (807), 702 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:22:56,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 807 transitions. [2021-11-05 12:22:56,023 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 807 transitions. Word has length 92 [2021-11-05 12:22:56,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:22:56,024 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 807 transitions. [2021-11-05 12:22:56,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 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) [2021-11-05 12:22:56,024 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 807 transitions. [2021-11-05 12:22:56,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-05 12:22:56,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:22:56,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:22:56,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-05 12:22:56,025 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:22:56,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:22:56,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2117850032, now seen corresponding path program 1 times [2021-11-05 12:22:56,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:22:56,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444063122] [2021-11-05 12:22:56,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:22:56,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:23:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:23:02,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:23:02,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:23:02,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444063122] [2021-11-05 12:23:02,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444063122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:23:02,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:23:02,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:23:02,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565731281] [2021-11-05 12:23:02,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:23:02,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:23:02,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:23:02,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:23:02,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:23:02,142 INFO L87 Difference]: Start difference. First operand 703 states and 807 transitions. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 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) [2021-11-05 12:23:04,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:06,313 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:08,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:23:08,551 INFO L93 Difference]: Finished difference Result 885 states and 1001 transitions. [2021-11-05 12:23:08,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 12:23:08,552 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 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 [2021-11-05 12:23:08,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:23:08,554 INFO L225 Difference]: With dead ends: 885 [2021-11-05 12:23:08,554 INFO L226 Difference]: Without dead ends: 808 [2021-11-05 12:23:08,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1155.20ms TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-11-05 12:23:08,554 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 892 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 47 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5290.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.50ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5655.24ms IncrementalHoareTripleChecker+Time [2021-11-05 12:23:08,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 1128 Invalid, 507 Unknown, 0 Unchecked, 6.50ms Time], IncrementalHoareTripleChecker [47 Valid, 458 Invalid, 2 Unknown, 0 Unchecked, 5655.24ms Time] [2021-11-05 12:23:08,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-11-05 12:23:08,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 674. [2021-11-05 12:23:08,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 668 states have (on average 1.160179640718563) internal successors, (775), 673 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:23:08,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 775 transitions. [2021-11-05 12:23:08,591 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 775 transitions. Word has length 92 [2021-11-05 12:23:08,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:23:08,591 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 775 transitions. [2021-11-05 12:23:08,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 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) [2021-11-05 12:23:08,591 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 775 transitions. [2021-11-05 12:23:08,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:23:08,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:23:08,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:23:08,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-05 12:23:08,593 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:23:08,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:23:08,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1677019333, now seen corresponding path program 1 times [2021-11-05 12:23:08,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:23:08,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028361296] [2021-11-05 12:23:08,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:23:08,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:23:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:23:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:23:09,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:23:09,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028361296] [2021-11-05 12:23:09,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028361296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:23:09,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:23:09,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:23:09,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954432155] [2021-11-05 12:23:09,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:23:09,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:23:09,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:23:09,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:23:09,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:23:09,277 INFO L87 Difference]: Start difference. First operand 674 states and 775 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:23:11,323 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:13,501 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:15,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:18,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:23:18,450 INFO L93 Difference]: Finished difference Result 811 states and 916 transitions. [2021-11-05 12:23:18,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 12:23:18,451 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:23:18,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:23:18,453 INFO L225 Difference]: With dead ends: 811 [2021-11-05 12:23:18,453 INFO L226 Difference]: Without dead ends: 799 [2021-11-05 12:23:18,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1443.46ms TimeCoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2021-11-05 12:23:18,454 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 1169 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 66 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7453.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.74ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7940.70ms IncrementalHoareTripleChecker+Time [2021-11-05 12:23:18,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1169 Valid, 976 Invalid, 634 Unknown, 0 Unchecked, 6.74ms Time], IncrementalHoareTripleChecker [66 Valid, 565 Invalid, 3 Unknown, 0 Unchecked, 7940.70ms Time] [2021-11-05 12:23:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2021-11-05 12:23:18,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 717. [2021-11-05 12:23:18,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 711 states have (on average 1.1617440225035163) internal successors, (826), 716 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:23:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 826 transitions. [2021-11-05 12:23:18,496 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 826 transitions. Word has length 93 [2021-11-05 12:23:18,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:23:18,496 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 826 transitions. [2021-11-05 12:23:18,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:23:18,497 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 826 transitions. [2021-11-05 12:23:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:23:18,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:23:18,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:23:18,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-05 12:23:18,498 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:23:18,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:23:18,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1418853895, now seen corresponding path program 1 times [2021-11-05 12:23:18,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:23:18,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042151768] [2021-11-05 12:23:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:23:18,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:23:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:23:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:23:19,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:23:19,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042151768] [2021-11-05 12:23:19,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042151768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:23:19,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:23:19,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 12:23:19,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564510140] [2021-11-05 12:23:19,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:23:19,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 12:23:19,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:23:19,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 12:23:19,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:23:19,818 INFO L87 Difference]: Start difference. First operand 717 states and 826 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:23:21,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:23,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:26,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:28,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:30,280 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:32,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:34,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:38,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:23:38,980 INFO L93 Difference]: Finished difference Result 1121 states and 1279 transitions. [2021-11-05 12:23:38,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 12:23:38,981 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:23:38,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:23:38,983 INFO L225 Difference]: With dead ends: 1121 [2021-11-05 12:23:38,983 INFO L226 Difference]: Without dead ends: 1107 [2021-11-05 12:23:38,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 2467.30ms TimeCoverageRelationStatistics Valid=264, Invalid=858, Unknown=0, NotChecked=0, Total=1122 [2021-11-05 12:23:38,984 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 1780 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 130 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16360.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.72ms SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17261.96ms IncrementalHoareTripleChecker+Time [2021-11-05 12:23:38,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1780 Valid, 1863 Invalid, 1022 Unknown, 0 Unchecked, 12.72ms Time], IncrementalHoareTripleChecker [130 Valid, 885 Invalid, 7 Unknown, 0 Unchecked, 17261.96ms Time] [2021-11-05 12:23:38,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2021-11-05 12:23:39,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 802. [2021-11-05 12:23:39,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 796 states have (on average 1.1608040201005025) internal successors, (924), 801 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:23:39,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 924 transitions. [2021-11-05 12:23:39,049 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 924 transitions. Word has length 93 [2021-11-05 12:23:39,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:23:39,050 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 924 transitions. [2021-11-05 12:23:39,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:23:39,050 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 924 transitions. [2021-11-05 12:23:39,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:23:39,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:23:39,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:23:39,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-05 12:23:39,051 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:23:39,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:23:39,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1184937781, now seen corresponding path program 1 times [2021-11-05 12:23:39,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:23:39,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226032587] [2021-11-05 12:23:39,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:23:39,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:23:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:23:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:23:40,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:23:40,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226032587] [2021-11-05 12:23:40,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226032587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:23:40,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:23:40,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-05 12:23:40,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8076755] [2021-11-05 12:23:40,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:23:40,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-05 12:23:40,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:23:40,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-05 12:23:40,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-11-05 12:23:40,390 INFO L87 Difference]: Start difference. First operand 802 states and 924 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:23:42,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:44,569 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:46,696 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:48,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:50,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:53,142 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:55,292 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:57,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:59,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:01,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:07,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:24:07,330 INFO L93 Difference]: Finished difference Result 1114 states and 1270 transitions. [2021-11-05 12:24:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-05 12:24:07,330 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:24:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:24:07,333 INFO L225 Difference]: With dead ends: 1114 [2021-11-05 12:24:07,333 INFO L226 Difference]: Without dead ends: 1107 [2021-11-05 12:24:07,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 3133.98ms TimeCoverageRelationStatistics Valid=396, Invalid=1326, Unknown=0, NotChecked=0, Total=1722 [2021-11-05 12:24:07,334 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 1839 mSDsluCounter, 2202 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 144 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22906.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.82ms SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24432.72ms IncrementalHoareTripleChecker+Time [2021-11-05 12:24:07,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1839 Valid, 2417 Invalid, 1231 Unknown, 0 Unchecked, 13.82ms Time], IncrementalHoareTripleChecker [144 Valid, 1077 Invalid, 10 Unknown, 0 Unchecked, 24432.72ms Time] [2021-11-05 12:24:07,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2021-11-05 12:24:07,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 809. [2021-11-05 12:24:07,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 803 states have (on average 1.1594022415940224) internal successors, (931), 808 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:24:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 931 transitions. [2021-11-05 12:24:07,383 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 931 transitions. Word has length 93 [2021-11-05 12:24:07,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:24:07,383 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 931 transitions. [2021-11-05 12:24:07,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:24:07,383 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 931 transitions. [2021-11-05 12:24:07,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:24:07,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:24:07,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:24:07,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-05 12:24:07,384 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:24:07,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:24:07,385 INFO L85 PathProgramCache]: Analyzing trace with hash -87730375, now seen corresponding path program 1 times [2021-11-05 12:24:07,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:24:07,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369260181] [2021-11-05 12:24:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:24:07,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:24:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:24:13,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:24:13,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:24:13,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369260181] [2021-11-05 12:24:13,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369260181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:24:13,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:24:13,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 12:24:13,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622080425] [2021-11-05 12:24:13,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:24:13,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-05 12:24:13,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:24:13,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-05 12:24:13,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-11-05 12:24:13,079 INFO L87 Difference]: Start difference. First operand 809 states and 931 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:24:15,123 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:17,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:19,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:21,453 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:23,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:29,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:24:29,445 INFO L93 Difference]: Finished difference Result 1290 states and 1465 transitions. [2021-11-05 12:24:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-05 12:24:29,445 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:24:29,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:24:29,448 INFO L225 Difference]: With dead ends: 1290 [2021-11-05 12:24:29,448 INFO L226 Difference]: Without dead ends: 1220 [2021-11-05 12:24:29,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 3751.78ms TimeCoverageRelationStatistics Valid=411, Invalid=1229, Unknown=0, NotChecked=0, Total=1640 [2021-11-05 12:24:29,449 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 1811 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 134 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12815.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.34ms SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13552.88ms IncrementalHoareTripleChecker+Time [2021-11-05 12:24:29,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1811 Valid, 1867 Invalid, 1047 Unknown, 0 Unchecked, 13.34ms Time], IncrementalHoareTripleChecker [134 Valid, 908 Invalid, 5 Unknown, 0 Unchecked, 13552.88ms Time] [2021-11-05 12:24:29,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-11-05 12:24:29,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 915. [2021-11-05 12:24:29,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 909 states have (on average 1.166116611661166) internal successors, (1060), 914 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:24:29,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1060 transitions. [2021-11-05 12:24:29,523 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1060 transitions. Word has length 93 [2021-11-05 12:24:29,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:24:29,523 INFO L470 AbstractCegarLoop]: Abstraction has 915 states and 1060 transitions. [2021-11-05 12:24:29,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:24:29,524 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1060 transitions. [2021-11-05 12:24:29,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-05 12:24:29,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:24:29,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:24:29,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-05 12:24:29,525 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:24:29,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:24:29,526 INFO L85 PathProgramCache]: Analyzing trace with hash 2118871911, now seen corresponding path program 1 times [2021-11-05 12:24:29,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:24:29,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48389942] [2021-11-05 12:24:29,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:24:29,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:24:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:24:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:24:30,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:24:30,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48389942] [2021-11-05 12:24:30,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48389942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:24:30,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:24:30,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:24:30,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928731229] [2021-11-05 12:24:30,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:24:30,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:24:30,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:24:30,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:24:30,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:24:30,115 INFO L87 Difference]: Start difference. First operand 915 states and 1060 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) [2021-11-05 12:24:32,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:34,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:36,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:37,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:24:37,721 INFO L93 Difference]: Finished difference Result 1214 states and 1386 transitions. [2021-11-05 12:24:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:24:37,722 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 [2021-11-05 12:24:37,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:24:37,723 INFO L225 Difference]: With dead ends: 1214 [2021-11-05 12:24:37,723 INFO L226 Difference]: Without dead ends: 1088 [2021-11-05 12:24:37,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 277.69ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:24:37,724 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 491 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 37 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6896.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.66ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7351.82ms IncrementalHoareTripleChecker+Time [2021-11-05 12:24:37,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 961 Invalid, 389 Unknown, 0 Unchecked, 3.66ms Time], IncrementalHoareTripleChecker [37 Valid, 349 Invalid, 3 Unknown, 0 Unchecked, 7351.82ms Time] [2021-11-05 12:24:37,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2021-11-05 12:24:37,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 909. [2021-11-05 12:24:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 903 states have (on average 1.1627906976744187) internal successors, (1050), 908 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:24:37,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1050 transitions. [2021-11-05 12:24:37,788 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1050 transitions. Word has length 94 [2021-11-05 12:24:37,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:24:37,789 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 1050 transitions. [2021-11-05 12:24:37,789 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) [2021-11-05 12:24:37,790 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1050 transitions. [2021-11-05 12:24:37,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-05 12:24:37,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:24:37,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:24:37,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-05 12:24:37,791 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:24:37,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:24:37,791 INFO L85 PathProgramCache]: Analyzing trace with hash -252867351, now seen corresponding path program 1 times [2021-11-05 12:24:37,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:24:37,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164461002] [2021-11-05 12:24:37,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:24:37,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:24:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:24:41,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:24:41,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:24:41,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164461002] [2021-11-05 12:24:41,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164461002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:24:41,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:24:41,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 12:24:41,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132994142] [2021-11-05 12:24:41,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:24:41,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 12:24:41,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:24:41,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 12:24:41,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:24:41,385 INFO L87 Difference]: Start difference. First operand 909 states and 1050 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 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) [2021-11-05 12:24:43,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:45,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:47,678 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:49,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:51,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:25:12,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:25:12,931 INFO L93 Difference]: Finished difference Result 1651 states and 1868 transitions. [2021-11-05 12:25:12,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-05 12:25:12,932 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 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 [2021-11-05 12:25:12,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:25:12,934 INFO L225 Difference]: With dead ends: 1651 [2021-11-05 12:25:12,934 INFO L226 Difference]: Without dead ends: 1573 [2021-11-05 12:25:12,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 14031.27ms TimeCoverageRelationStatistics Valid=2036, Invalid=9306, Unknown=0, NotChecked=0, Total=11342 [2021-11-05 12:25:12,937 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 2147 mSDsluCounter, 4233 mSDsCounter, 0 mSdLazyCounter, 3011 mSolverCounterSat, 336 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17044.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2147 SdHoareTripleChecker+Valid, 4782 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.81ms SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 3011 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18049.72ms IncrementalHoareTripleChecker+Time [2021-11-05 12:25:12,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2147 Valid, 4782 Invalid, 3352 Unknown, 0 Unchecked, 31.81ms Time], IncrementalHoareTripleChecker [336 Valid, 3011 Invalid, 5 Unknown, 0 Unchecked, 18049.72ms Time] [2021-11-05 12:25:12,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-11-05 12:25:13,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 991. [2021-11-05 12:25:13,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 986 states have (on average 1.167342799188641) internal successors, (1151), 990 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:25:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1151 transitions. [2021-11-05 12:25:13,010 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1151 transitions. Word has length 94 [2021-11-05 12:25:13,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:25:13,010 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 1151 transitions. [2021-11-05 12:25:13,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 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) [2021-11-05 12:25:13,010 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1151 transitions. [2021-11-05 12:25:13,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-05 12:25:13,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:25:13,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:25:13,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-05 12:25:13,011 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:25:13,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:25:13,011 INFO L85 PathProgramCache]: Analyzing trace with hash 135454582, now seen corresponding path program 1 times [2021-11-05 12:25:13,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:25:13,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900446364] [2021-11-05 12:25:13,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:25:13,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:25:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:25:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:25:13,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:25:13,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900446364] [2021-11-05 12:25:13,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900446364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:25:13,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:25:13,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:25:13,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125338070] [2021-11-05 12:25:13,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:25:13,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:25:13,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:25:13,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:25:13,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:25:13,362 INFO L87 Difference]: Start difference. First operand 991 states and 1151 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:25:14,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:25:14,520 INFO L93 Difference]: Finished difference Result 1175 states and 1353 transitions. [2021-11-05 12:25:14,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:25:14,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-05 12:25:14,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:25:14,522 INFO L225 Difference]: With dead ends: 1175 [2021-11-05 12:25:14,522 INFO L226 Difference]: Without dead ends: 1134 [2021-11-05 12:25:14,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 331.76ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:25:14,522 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 214 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 801.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.17ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 846.96ms IncrementalHoareTripleChecker+Time [2021-11-05 12:25:14,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 1248 Invalid, 372 Unknown, 0 Unchecked, 4.17ms Time], IncrementalHoareTripleChecker [72 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 846.96ms Time] [2021-11-05 12:25:14,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-11-05 12:25:14,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 989. [2021-11-05 12:25:14,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 984 states have (on average 1.1656504065040652) internal successors, (1147), 988 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:25:14,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1147 transitions. [2021-11-05 12:25:14,594 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1147 transitions. Word has length 95 [2021-11-05 12:25:14,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:25:14,594 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1147 transitions. [2021-11-05 12:25:14,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:25:14,594 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1147 transitions. [2021-11-05 12:25:14,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-05 12:25:14,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:25:14,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:25:14,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-05 12:25:14,595 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:25:14,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:25:14,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1064569996, now seen corresponding path program 1 times [2021-11-05 12:25:14,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:25:14,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135287335] [2021-11-05 12:25:14,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:25:14,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:25:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:25:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:25:15,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:25:15,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135287335] [2021-11-05 12:25:15,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135287335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:25:15,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:25:15,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:25:15,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551316197] [2021-11-05 12:25:15,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:25:15,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:25:15,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:25:15,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:25:15,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:25:15,250 INFO L87 Difference]: Start difference. First operand 989 states and 1147 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:25:17,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:25:19,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:25:21,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:25:25,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:25:25,186 INFO L93 Difference]: Finished difference Result 1410 states and 1607 transitions. [2021-11-05 12:25:25,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-05 12:25:25,187 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-05 12:25:25,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:25:25,188 INFO L225 Difference]: With dead ends: 1410 [2021-11-05 12:25:25,188 INFO L226 Difference]: Without dead ends: 1328 [2021-11-05 12:25:25,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1868.10ms TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2021-11-05 12:25:25,189 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 1364 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 105 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7720.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.51ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8179.73ms IncrementalHoareTripleChecker+Time [2021-11-05 12:25:25,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1364 Valid, 1260 Invalid, 758 Unknown, 0 Unchecked, 8.51ms Time], IncrementalHoareTripleChecker [105 Valid, 650 Invalid, 3 Unknown, 0 Unchecked, 8179.73ms Time] [2021-11-05 12:25:25,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2021-11-05 12:25:25,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1115. [2021-11-05 12:25:25,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1110 states have (on average 1.1567567567567567) internal successors, (1284), 1114 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:25:25,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1284 transitions. [2021-11-05 12:25:25,288 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1284 transitions. Word has length 95 [2021-11-05 12:25:25,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:25:25,288 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1284 transitions. [2021-11-05 12:25:25,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:25:25,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1284 transitions. [2021-11-05 12:25:25,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-05 12:25:25,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:25:25,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:25:25,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-05 12:25:25,289 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:25:25,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:25:25,289 INFO L85 PathProgramCache]: Analyzing trace with hash -806404558, now seen corresponding path program 1 times [2021-11-05 12:25:25,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:25:25,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812471562] [2021-11-05 12:25:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:25:25,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:25:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:25:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:25:30,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:25:30,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812471562] [2021-11-05 12:25:30,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812471562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:25:30,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:25:30,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 12:25:30,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245852450] [2021-11-05 12:25:30,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:25:30,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 12:25:30,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:25:30,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 12:25:30,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:25:30,933 INFO L87 Difference]: Start difference. First operand 1115 states and 1284 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:25:32,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:25:35,125 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:25:37,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:25:39,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:25:41,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:25:43,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:25:45,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:00,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:26:00,440 INFO L93 Difference]: Finished difference Result 1486 states and 1677 transitions. [2021-11-05 12:26:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-05 12:26:00,440 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-05 12:26:00,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:26:00,442 INFO L225 Difference]: With dead ends: 1486 [2021-11-05 12:26:00,442 INFO L226 Difference]: Without dead ends: 1455 [2021-11-05 12:26:00,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 8459.72ms TimeCoverageRelationStatistics Valid=1105, Invalid=5375, Unknown=0, NotChecked=0, Total=6480 [2021-11-05 12:26:00,444 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 2102 mSDsluCounter, 4217 mSDsCounter, 0 mSdLazyCounter, 2752 mSolverCounterSat, 295 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20429.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2102 SdHoareTripleChecker+Valid, 4702 SdHoareTripleChecker+Invalid, 3054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.15ms SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 2752 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21588.12ms IncrementalHoareTripleChecker+Time [2021-11-05 12:26:00,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2102 Valid, 4702 Invalid, 3054 Unknown, 0 Unchecked, 29.15ms Time], IncrementalHoareTripleChecker [295 Valid, 2752 Invalid, 7 Unknown, 0 Unchecked, 21588.12ms Time] [2021-11-05 12:26:00,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-11-05 12:26:00,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1113. [2021-11-05 12:26:00,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1108 states have (on average 1.1561371841155235) internal successors, (1281), 1112 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:00,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1281 transitions. [2021-11-05 12:26:00,525 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1281 transitions. Word has length 95 [2021-11-05 12:26:00,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:26:00,525 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 1281 transitions. [2021-11-05 12:26:00,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:00,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1281 transitions. [2021-11-05 12:26:00,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-05 12:26:00,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:26:00,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:26:00,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-05 12:26:00,526 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:26:00,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:26:00,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1162735838, now seen corresponding path program 1 times [2021-11-05 12:26:00,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:26:00,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558063048] [2021-11-05 12:26:00,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:26:00,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:26:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:26:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:26:05,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:26:05,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558063048] [2021-11-05 12:26:05,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558063048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:26:05,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:26:05,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:26:05,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294474789] [2021-11-05 12:26:05,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:26:05,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:26:05,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:26:05,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:26:05,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:26:05,852 INFO L87 Difference]: Start difference. First operand 1113 states and 1281 transitions. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:07,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:10,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:12,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:14,298 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:16,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:18,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:20,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:22,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:26,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:26:26,891 INFO L93 Difference]: Finished difference Result 1579 states and 1801 transitions. [2021-11-05 12:26:26,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-05 12:26:26,891 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-05 12:26:26,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:26:26,893 INFO L225 Difference]: With dead ends: 1579 [2021-11-05 12:26:26,893 INFO L226 Difference]: Without dead ends: 1577 [2021-11-05 12:26:26,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2166.53ms TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2021-11-05 12:26:26,894 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 1198 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 72 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18198.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.52ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19344.92ms IncrementalHoareTripleChecker+Time [2021-11-05 12:26:26,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1198 Valid, 2120 Invalid, 851 Unknown, 0 Unchecked, 11.52ms Time], IncrementalHoareTripleChecker [72 Valid, 771 Invalid, 8 Unknown, 0 Unchecked, 19344.92ms Time] [2021-11-05 12:26:26,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2021-11-05 12:26:26,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1121. [2021-11-05 12:26:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1116 states have (on average 1.1559139784946237) internal successors, (1290), 1120 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:26,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1290 transitions. [2021-11-05 12:26:26,986 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1290 transitions. Word has length 99 [2021-11-05 12:26:26,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:26:26,986 INFO L470 AbstractCegarLoop]: Abstraction has 1121 states and 1290 transitions. [2021-11-05 12:26:26,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:26,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1290 transitions. [2021-11-05 12:26:26,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-05 12:26:26,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:26:26,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:26:26,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-05 12:26:26,988 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:26:26,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:26:26,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1773074330, now seen corresponding path program 1 times [2021-11-05 12:26:26,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:26:26,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840349429] [2021-11-05 12:26:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:26:26,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:26:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:26:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:26:27,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:26:27,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840349429] [2021-11-05 12:26:27,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840349429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:26:27,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:26:27,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:26:27,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911225131] [2021-11-05 12:26:27,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:26:27,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:26:27,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:26:27,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:26:27,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:26:27,249 INFO L87 Difference]: Start difference. First operand 1121 states and 1290 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:27,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:26:27,463 INFO L93 Difference]: Finished difference Result 1516 states and 1742 transitions. [2021-11-05 12:26:27,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:26:27,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-05 12:26:27,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:26:27,465 INFO L225 Difference]: With dead ends: 1516 [2021-11-05 12:26:27,465 INFO L226 Difference]: Without dead ends: 831 [2021-11-05 12:26:27,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 179.40ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:26:27,466 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 96 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.86ms IncrementalHoareTripleChecker+Time [2021-11-05 12:26:27,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1483 Invalid, 22 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 61.86ms Time] [2021-11-05 12:26:27,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2021-11-05 12:26:27,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 708. [2021-11-05 12:26:27,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 703 states have (on average 1.1479374110953058) internal successors, (807), 707 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:27,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 807 transitions. [2021-11-05 12:26:27,518 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 807 transitions. Word has length 101 [2021-11-05 12:26:27,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:26:27,518 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 807 transitions. [2021-11-05 12:26:27,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:27,518 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 807 transitions. [2021-11-05 12:26:27,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-05 12:26:27,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:26:27,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:26:27,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-05 12:26:27,519 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:26:27,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:26:27,520 INFO L85 PathProgramCache]: Analyzing trace with hash 559822594, now seen corresponding path program 1 times [2021-11-05 12:26:27,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:26:27,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597013860] [2021-11-05 12:26:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:26:27,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:26:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:26:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:26:30,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:26:30,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597013860] [2021-11-05 12:26:30,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597013860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:26:30,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:26:30,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 12:26:30,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598159651] [2021-11-05 12:26:30,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:26:30,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:26:30,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:26:30,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:26:30,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:26:30,615 INFO L87 Difference]: Start difference. First operand 708 states and 807 transitions. Second operand has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:32,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:34,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:36,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:39,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:26:39,161 INFO L93 Difference]: Finished difference Result 939 states and 1058 transitions. [2021-11-05 12:26:39,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:26:39,161 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-05 12:26:39,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:26:39,163 INFO L225 Difference]: With dead ends: 939 [2021-11-05 12:26:39,163 INFO L226 Difference]: Without dead ends: 937 [2021-11-05 12:26:39,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1785.17ms TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2021-11-05 12:26:39,164 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1104 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 49 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6936.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.94ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7381.87ms IncrementalHoareTripleChecker+Time [2021-11-05 12:26:39,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1104 Valid, 1629 Invalid, 425 Unknown, 0 Unchecked, 5.94ms Time], IncrementalHoareTripleChecker [49 Valid, 373 Invalid, 3 Unknown, 0 Unchecked, 7381.87ms Time] [2021-11-05 12:26:39,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2021-11-05 12:26:39,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 716. [2021-11-05 12:26:39,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 711 states have (on average 1.1448663853727146) internal successors, (814), 715 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:39,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 814 transitions. [2021-11-05 12:26:39,220 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 814 transitions. Word has length 103 [2021-11-05 12:26:39,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:26:39,220 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 814 transitions. [2021-11-05 12:26:39,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:39,220 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 814 transitions. [2021-11-05 12:26:39,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-05 12:26:39,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:26:39,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:26:39,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-05 12:26:39,221 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:26:39,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:26:39,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1142405382, now seen corresponding path program 1 times [2021-11-05 12:26:39,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:26:39,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443203252] [2021-11-05 12:26:39,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:26:39,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:26:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:26:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:26:39,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:26:39,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443203252] [2021-11-05 12:26:39,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443203252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:26:39,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:26:39,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:26:39,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293616256] [2021-11-05 12:26:39,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:26:39,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:26:39,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:26:39,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:26:39,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:26:39,408 INFO L87 Difference]: Start difference. First operand 716 states and 814 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:39,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:26:39,578 INFO L93 Difference]: Finished difference Result 1201 states and 1363 transitions. [2021-11-05 12:26:39,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:26:39,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-05 12:26:39,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:26:39,580 INFO L225 Difference]: With dead ends: 1201 [2021-11-05 12:26:39,580 INFO L226 Difference]: Without dead ends: 1060 [2021-11-05 12:26:39,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.76ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:26:39,581 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 260 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.71ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.80ms IncrementalHoareTripleChecker+Time [2021-11-05 12:26:39,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 812 Invalid, 10 Unknown, 0 Unchecked, 0.71ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 31.80ms Time] [2021-11-05 12:26:39,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-11-05 12:26:39,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 722. [2021-11-05 12:26:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 717 states have (on average 1.1436541143654115) internal successors, (820), 721 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:39,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 820 transitions. [2021-11-05 12:26:39,639 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 820 transitions. Word has length 106 [2021-11-05 12:26:39,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:26:39,640 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 820 transitions. [2021-11-05 12:26:39,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:39,640 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 820 transitions. [2021-11-05 12:26:39,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-05 12:26:39,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:26:39,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:26:39,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-05 12:26:39,641 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:26:39,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:26:39,641 INFO L85 PathProgramCache]: Analyzing trace with hash 391613226, now seen corresponding path program 1 times [2021-11-05 12:26:39,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:26:39,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720860658] [2021-11-05 12:26:39,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:26:39,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:26:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:26:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:26:39,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:26:39,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720860658] [2021-11-05 12:26:39,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720860658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:26:39,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:26:39,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:26:39,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390462038] [2021-11-05 12:26:39,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:26:39,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:26:39,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:26:39,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:26:39,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:26:39,832 INFO L87 Difference]: Start difference. First operand 722 states and 820 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:39,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:26:39,964 INFO L93 Difference]: Finished difference Result 868 states and 983 transitions. [2021-11-05 12:26:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:26:39,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-05 12:26:39,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:26:39,965 INFO L225 Difference]: With dead ends: 868 [2021-11-05 12:26:39,965 INFO L226 Difference]: Without dead ends: 675 [2021-11-05 12:26:39,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.83ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:26:39,966 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 103 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.71ms IncrementalHoareTripleChecker+Time [2021-11-05 12:26:39,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 968 Invalid, 15 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 36.71ms Time] [2021-11-05 12:26:39,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-11-05 12:26:40,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 613. [2021-11-05 12:26:40,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 608 states have (on average 1.1266447368421053) internal successors, (685), 612 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:40,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 685 transitions. [2021-11-05 12:26:40,012 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 685 transitions. Word has length 108 [2021-11-05 12:26:40,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:26:40,013 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 685 transitions. [2021-11-05 12:26:40,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:40,013 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 685 transitions. [2021-11-05 12:26:40,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-05 12:26:40,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:26:40,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:26:40,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-05 12:26:40,014 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:26:40,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:26:40,015 INFO L85 PathProgramCache]: Analyzing trace with hash 748826966, now seen corresponding path program 1 times [2021-11-05 12:26:40,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:26:40,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503757327] [2021-11-05 12:26:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:26:40,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:26:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:26:40,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:26:40,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:26:40,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503757327] [2021-11-05 12:26:40,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503757327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:26:40,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:26:40,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 12:26:40,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131155286] [2021-11-05 12:26:40,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:26:40,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 12:26:40,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:26:40,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 12:26:40,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 12:26:40,394 INFO L87 Difference]: Start difference. First operand 613 states and 685 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:40,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:26:40,456 INFO L93 Difference]: Finished difference Result 790 states and 885 transitions. [2021-11-05 12:26:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 12:26:40,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-05 12:26:40,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:26:40,457 INFO L225 Difference]: With dead ends: 790 [2021-11-05 12:26:40,457 INFO L226 Difference]: Without dead ends: 643 [2021-11-05 12:26:40,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 12:26:40,458 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 112 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.96ms IncrementalHoareTripleChecker+Time [2021-11-05 12:26:40,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 377 Invalid, 4 Unknown, 0 Unchecked, 0.31ms Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 13.96ms Time] [2021-11-05 12:26:40,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-11-05 12:26:40,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 607. [2021-11-05 12:26:40,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 602 states have (on average 1.1212624584717608) internal successors, (675), 606 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:40,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 675 transitions. [2021-11-05 12:26:40,503 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 675 transitions. Word has length 109 [2021-11-05 12:26:40,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:26:40,503 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 675 transitions. [2021-11-05 12:26:40,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:40,504 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 675 transitions. [2021-11-05 12:26:40,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-05 12:26:40,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:26:40,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:26:40,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-05 12:26:40,505 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:26:40,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:26:40,505 INFO L85 PathProgramCache]: Analyzing trace with hash -911345929, now seen corresponding path program 1 times [2021-11-05 12:26:40,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:26:40,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054669237] [2021-11-05 12:26:40,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:26:40,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:26:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:26:40,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:26:40,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:26:40,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054669237] [2021-11-05 12:26:40,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054669237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:26:40,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:26:40,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:26:40,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927613320] [2021-11-05 12:26:40,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:26:40,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:26:40,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:26:40,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:26:40,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:26:40,711 INFO L87 Difference]: Start difference. First operand 607 states and 675 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:40,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:26:40,830 INFO L93 Difference]: Finished difference Result 903 states and 1000 transitions. [2021-11-05 12:26:40,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:26:40,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-05 12:26:40,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:26:40,832 INFO L225 Difference]: With dead ends: 903 [2021-11-05 12:26:40,832 INFO L226 Difference]: Without dead ends: 762 [2021-11-05 12:26:40,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.12ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:26:40,832 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 151 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.67ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.46ms IncrementalHoareTripleChecker+Time [2021-11-05 12:26:40,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 981 Invalid, 18 Unknown, 0 Unchecked, 0.67ms Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 36.46ms Time] [2021-11-05 12:26:40,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-11-05 12:26:40,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 610. [2021-11-05 12:26:40,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 605 states have (on average 1.1206611570247933) internal successors, (678), 609 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:40,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 678 transitions. [2021-11-05 12:26:40,880 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 678 transitions. Word has length 110 [2021-11-05 12:26:40,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:26:40,880 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 678 transitions. [2021-11-05 12:26:40,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 678 transitions. [2021-11-05 12:26:40,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-05 12:26:40,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:26:40,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:26:40,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-05 12:26:40,881 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:26:40,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:26:40,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1817647446, now seen corresponding path program 1 times [2021-11-05 12:26:40,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:26:40,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039400652] [2021-11-05 12:26:40,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:26:40,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:26:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:26:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:26:41,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:26:41,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039400652] [2021-11-05 12:26:41,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039400652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:26:41,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:26:41,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:26:41,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53710358] [2021-11-05 12:26:41,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:26:41,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:26:41,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:26:41,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:26:41,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:26:41,401 INFO L87 Difference]: Start difference. First operand 610 states and 678 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:41,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:26:41,512 INFO L93 Difference]: Finished difference Result 883 states and 981 transitions. [2021-11-05 12:26:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:26:41,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-05 12:26:41,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:26:41,514 INFO L225 Difference]: With dead ends: 883 [2021-11-05 12:26:41,514 INFO L226 Difference]: Without dead ends: 634 [2021-11-05 12:26:41,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.37ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:26:41,515 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 209 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.34ms IncrementalHoareTripleChecker+Time [2021-11-05 12:26:41,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 504 Invalid, 11 Unknown, 0 Unchecked, 0.53ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 36.34ms Time] [2021-11-05 12:26:41,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-11-05 12:26:41,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 598. [2021-11-05 12:26:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 593 states have (on average 1.1129848229342327) internal successors, (660), 597 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 660 transitions. [2021-11-05 12:26:41,561 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 660 transitions. Word has length 111 [2021-11-05 12:26:41,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:26:41,561 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 660 transitions. [2021-11-05 12:26:41,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:41,561 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 660 transitions. [2021-11-05 12:26:41,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-05 12:26:41,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:26:41,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:26:41,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-05 12:26:41,562 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:26:41,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:26:41,562 INFO L85 PathProgramCache]: Analyzing trace with hash -908478147, now seen corresponding path program 1 times [2021-11-05 12:26:41,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:26:41,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142064117] [2021-11-05 12:26:41,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:26:41,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:26:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:26:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:26:44,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:26:44,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142064117] [2021-11-05 12:26:44,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142064117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:26:44,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:26:44,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:26:44,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464926905] [2021-11-05 12:26:44,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:26:44,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:26:44,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:26:44,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:26:44,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:26:44,571 INFO L87 Difference]: Start difference. First operand 598 states and 660 transitions. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:26:46,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:48,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:50,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:52,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:55,125 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:57,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:26:59,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:27:01,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:27:01,095 INFO L93 Difference]: Finished difference Result 945 states and 1036 transitions. [2021-11-05 12:27:01,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-05 12:27:01,096 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-05 12:27:01,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:27:01,097 INFO L225 Difference]: With dead ends: 945 [2021-11-05 12:27:01,097 INFO L226 Difference]: Without dead ends: 702 [2021-11-05 12:27:01,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1244.26ms TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2021-11-05 12:27:01,097 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 960 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 22 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14776.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.10ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15656.26ms IncrementalHoareTripleChecker+Time [2021-11-05 12:27:01,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [960 Valid, 1856 Invalid, 336 Unknown, 0 Unchecked, 5.10ms Time], IncrementalHoareTripleChecker [22 Valid, 307 Invalid, 7 Unknown, 0 Unchecked, 15656.26ms Time] [2021-11-05 12:27:01,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-05 12:27:01,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 585. [2021-11-05 12:27:01,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 580 states have (on average 1.1051724137931034) internal successors, (641), 584 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:27:01,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 641 transitions. [2021-11-05 12:27:01,143 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 641 transitions. Word has length 112 [2021-11-05 12:27:01,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:27:01,146 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 641 transitions. [2021-11-05 12:27:01,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:27:01,146 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 641 transitions. [2021-11-05 12:27:01,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-05 12:27:01,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:27:01,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:27:01,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-05 12:27:01,147 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:27:01,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:27:01,148 INFO L85 PathProgramCache]: Analyzing trace with hash -689623429, now seen corresponding path program 1 times [2021-11-05 12:27:01,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:27:01,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109132085] [2021-11-05 12:27:01,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:27:01,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:27:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:27:08,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:27:08,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:27:08,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109132085] [2021-11-05 12:27:08,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109132085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:27:08,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:27:08,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:27:08,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41827793] [2021-11-05 12:27:08,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:27:08,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:27:08,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:27:08,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:27:08,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:27:08,483 INFO L87 Difference]: Start difference. First operand 585 states and 641 transitions. Second operand has 14 states, 14 states have (on average 8.0) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:27:10,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:27:12,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:27:12,190 INFO L93 Difference]: Finished difference Result 798 states and 863 transitions. [2021-11-05 12:27:12,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 12:27:12,191 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.0) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-05 12:27:12,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:27:12,192 INFO L225 Difference]: With dead ends: 798 [2021-11-05 12:27:12,192 INFO L226 Difference]: Without dead ends: 738 [2021-11-05 12:27:12,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1085.62ms TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2021-11-05 12:27:12,193 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 1093 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2805.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.15ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2997.86ms IncrementalHoareTripleChecker+Time [2021-11-05 12:27:12,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 1187 Invalid, 287 Unknown, 0 Unchecked, 5.15ms Time], IncrementalHoareTripleChecker [8 Valid, 278 Invalid, 1 Unknown, 0 Unchecked, 2997.86ms Time] [2021-11-05 12:27:12,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-11-05 12:27:12,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 571. [2021-11-05 12:27:12,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 566 states have (on average 1.1007067137809188) internal successors, (623), 570 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:27:12,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 623 transitions. [2021-11-05 12:27:12,239 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 623 transitions. Word has length 112 [2021-11-05 12:27:12,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:27:12,240 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 623 transitions. [2021-11-05 12:27:12,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.0) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:27:12,240 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 623 transitions. [2021-11-05 12:27:12,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-05 12:27:12,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:27:12,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:27:12,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-05 12:27:12,241 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:27:12,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:27:12,241 INFO L85 PathProgramCache]: Analyzing trace with hash -2122633611, now seen corresponding path program 1 times [2021-11-05 12:27:12,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:27:12,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434453454] [2021-11-05 12:27:12,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:27:12,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:27:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:27:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:27:13,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:27:13,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434453454] [2021-11-05 12:27:13,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434453454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:27:13,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:27:13,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:27:13,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271677041] [2021-11-05 12:27:13,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:27:13,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:27:13,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:27:13,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:27:13,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:27:13,595 INFO L87 Difference]: Start difference. First operand 571 states and 623 transitions. Second operand has 15 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:27:15,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:27:17,837 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:27:19,971 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:27:22,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:27:24,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:27:26,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:27:28,520 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:27:32,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:27:32,162 INFO L93 Difference]: Finished difference Result 920 states and 1003 transitions. [2021-11-05 12:27:32,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-05 12:27:32,162 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-05 12:27:32,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:27:32,163 INFO L225 Difference]: With dead ends: 920 [2021-11-05 12:27:32,163 INFO L226 Difference]: Without dead ends: 862 [2021-11-05 12:27:32,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2338.36ms TimeCoverageRelationStatistics Valid=318, Invalid=804, Unknown=0, NotChecked=0, Total=1122 [2021-11-05 12:27:32,164 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1656 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 113 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15635.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.34ms SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16663.93ms IncrementalHoareTripleChecker+Time [2021-11-05 12:27:32,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1656 Valid, 1329 Invalid, 682 Unknown, 0 Unchecked, 8.34ms Time], IncrementalHoareTripleChecker [113 Valid, 562 Invalid, 7 Unknown, 0 Unchecked, 16663.93ms Time] [2021-11-05 12:27:32,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-11-05 12:27:32,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 596. [2021-11-05 12:27:32,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 591 states have (on average 1.101522842639594) internal successors, (651), 595 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:27:32,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 651 transitions. [2021-11-05 12:27:32,214 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 651 transitions. Word has length 112 [2021-11-05 12:27:32,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:27:32,214 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 651 transitions. [2021-11-05 12:27:32,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:27:32,214 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 651 transitions. [2021-11-05 12:27:32,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-05 12:27:32,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:27:32,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:27:32,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-05 12:27:32,215 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:27:32,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:27:32,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476549, now seen corresponding path program 1 times [2021-11-05 12:27:32,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:27:32,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111317284] [2021-11-05 12:27:32,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:27:32,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:27:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:27:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:27:32,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:27:32,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111317284] [2021-11-05 12:27:32,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111317284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:27:32,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:27:32,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:27:32,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599642499] [2021-11-05 12:27:32,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:27:32,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:27:32,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:27:32,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:27:32,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:27:32,393 INFO L87 Difference]: Start difference. First operand 596 states and 651 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:27:32,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:27:32,498 INFO L93 Difference]: Finished difference Result 647 states and 704 transitions. [2021-11-05 12:27:32,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:27:32,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-05 12:27:32,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:27:32,500 INFO L225 Difference]: With dead ends: 647 [2021-11-05 12:27:32,500 INFO L226 Difference]: Without dead ends: 561 [2021-11-05 12:27:32,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.00ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:27:32,500 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 58 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.48ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.97ms IncrementalHoareTripleChecker+Time [2021-11-05 12:27:32,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 653 Invalid, 10 Unknown, 0 Unchecked, 0.48ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 29.97ms Time] [2021-11-05 12:27:32,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-11-05 12:27:32,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 543. [2021-11-05 12:27:32,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 538 states have (on average 1.0929368029739777) internal successors, (588), 542 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:27:32,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 588 transitions. [2021-11-05 12:27:32,554 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 588 transitions. Word has length 112 [2021-11-05 12:27:32,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:27:32,554 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 588 transitions. [2021-11-05 12:27:32,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:27:32,554 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 588 transitions. [2021-11-05 12:27:32,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-05 12:27:32,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:27:32,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:27:32,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-05 12:27:32,555 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:27:32,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:27:32,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2035755465, now seen corresponding path program 1 times [2021-11-05 12:27:32,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:27:32,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632595451] [2021-11-05 12:27:32,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:27:32,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:27:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:27:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:27:43,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:27:43,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632595451] [2021-11-05 12:27:43,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632595451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:27:43,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:27:43,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-11-05 12:27:43,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406058448] [2021-11-05 12:27:43,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:27:43,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-05 12:27:43,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:27:43,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-05 12:27:43,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2021-11-05 12:27:43,867 INFO L87 Difference]: Start difference. First operand 543 states and 588 transitions. Second operand has 35 states, 35 states have (on average 3.2) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:27:45,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:27:48,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:27:50,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:27:52,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:27:54,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:27:56,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:27:58,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:00,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:02,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:05,054 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:07,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:09,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:11,496 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:13,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:27,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:28:27,909 INFO L93 Difference]: Finished difference Result 780 states and 834 transitions. [2021-11-05 12:28:27,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-05 12:28:27,909 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-05 12:28:27,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:28:27,910 INFO L225 Difference]: With dead ends: 780 [2021-11-05 12:28:27,910 INFO L226 Difference]: Without dead ends: 733 [2021-11-05 12:28:27,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 11825.36ms TimeCoverageRelationStatistics Valid=1029, Invalid=4227, Unknown=0, NotChecked=0, Total=5256 [2021-11-05 12:28:27,911 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 2393 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 180 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32638.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2393 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.77ms SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34722.32ms IncrementalHoareTripleChecker+Time [2021-11-05 12:28:27,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2393 Valid, 2480 Invalid, 1532 Unknown, 0 Unchecked, 18.77ms Time], IncrementalHoareTripleChecker [180 Valid, 1338 Invalid, 14 Unknown, 0 Unchecked, 34722.32ms Time] [2021-11-05 12:28:27,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-11-05 12:28:27,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 527. [2021-11-05 12:28:27,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 522 states have (on average 1.0919540229885059) internal successors, (570), 526 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:28:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 570 transitions. [2021-11-05 12:28:27,957 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 570 transitions. Word has length 112 [2021-11-05 12:28:27,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:28:27,957 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 570 transitions. [2021-11-05 12:28:27,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:28:27,957 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 570 transitions. [2021-11-05 12:28:27,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-05 12:28:27,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:28:27,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:28:27,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-05 12:28:27,958 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:28:27,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:28:27,958 INFO L85 PathProgramCache]: Analyzing trace with hash 688839446, now seen corresponding path program 1 times [2021-11-05 12:28:27,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:28:27,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742599277] [2021-11-05 12:28:27,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:28:27,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:28:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:28:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:28:28,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:28:28,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742599277] [2021-11-05 12:28:28,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742599277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:28:28,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:28:28,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:28:28,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443384000] [2021-11-05 12:28:28,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:28:28,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:28:28,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:28:28,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:28:28,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:28:28,117 INFO L87 Difference]: Start difference. First operand 527 states and 570 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:28:28,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:28:28,246 INFO L93 Difference]: Finished difference Result 612 states and 664 transitions. [2021-11-05 12:28:28,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:28:28,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-05 12:28:28,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:28:28,247 INFO L225 Difference]: With dead ends: 612 [2021-11-05 12:28:28,247 INFO L226 Difference]: Without dead ends: 563 [2021-11-05 12:28:28,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.25ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:28:28,248 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 102 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.54ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.70ms IncrementalHoareTripleChecker+Time [2021-11-05 12:28:28,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 780 Invalid, 14 Unknown, 0 Unchecked, 0.54ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 39.70ms Time] [2021-11-05 12:28:28,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-05 12:28:28,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 527. [2021-11-05 12:28:28,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 522 states have (on average 1.082375478927203) internal successors, (565), 526 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:28:28,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 565 transitions. [2021-11-05 12:28:28,292 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 565 transitions. Word has length 113 [2021-11-05 12:28:28,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:28:28,292 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 565 transitions. [2021-11-05 12:28:28,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:28:28,292 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 565 transitions. [2021-11-05 12:28:28,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-05 12:28:28,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:28:28,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:28:28,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-05 12:28:28,293 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:28:28,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:28:28,294 INFO L85 PathProgramCache]: Analyzing trace with hash 566323022, now seen corresponding path program 1 times [2021-11-05 12:28:28,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:28:28,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187453147] [2021-11-05 12:28:28,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:28:28,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:28:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:28:30,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:28:30,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:28:30,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187453147] [2021-11-05 12:28:30,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187453147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:28:30,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:28:30,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-05 12:28:30,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926915470] [2021-11-05 12:28:30,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:28:30,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-05 12:28:30,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:28:30,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-05 12:28:30,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-05 12:28:30,277 INFO L87 Difference]: Start difference. First operand 527 states and 565 transitions. Second operand has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:28:32,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:34,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:36,575 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:38,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:40,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:48,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:28:48,549 INFO L93 Difference]: Finished difference Result 739 states and 778 transitions. [2021-11-05 12:28:48,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-05 12:28:48,550 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-05 12:28:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:28:48,551 INFO L225 Difference]: With dead ends: 739 [2021-11-05 12:28:48,551 INFO L226 Difference]: Without dead ends: 669 [2021-11-05 12:28:48,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 5376.11ms TimeCoverageRelationStatistics Valid=542, Invalid=2110, Unknown=0, NotChecked=0, Total=2652 [2021-11-05 12:28:48,552 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 1490 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 96 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12938.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.24ms SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13801.92ms IncrementalHoareTripleChecker+Time [2021-11-05 12:28:48,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1490 Valid, 1954 Invalid, 1159 Unknown, 0 Unchecked, 13.24ms Time], IncrementalHoareTripleChecker [96 Valid, 1058 Invalid, 5 Unknown, 0 Unchecked, 13801.92ms Time] [2021-11-05 12:28:48,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-11-05 12:28:48,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 518. [2021-11-05 12:28:48,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 513 states have (on average 1.0799220272904484) internal successors, (554), 517 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:28:48,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 554 transitions. [2021-11-05 12:28:48,598 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 554 transitions. Word has length 114 [2021-11-05 12:28:48,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:28:48,598 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 554 transitions. [2021-11-05 12:28:48,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:28:48,598 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 554 transitions. [2021-11-05 12:28:48,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-05 12:28:48,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:28:48,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:28:48,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-05 12:28:48,599 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:28:48,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:28:48,600 INFO L85 PathProgramCache]: Analyzing trace with hash -330335905, now seen corresponding path program 1 times [2021-11-05 12:28:48,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:28:48,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61429963] [2021-11-05 12:28:48,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:28:48,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:28:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:28:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:28:48,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:28:48,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61429963] [2021-11-05 12:28:48,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61429963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:28:48,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:28:48,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:28:48,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630927158] [2021-11-05 12:28:48,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:28:48,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:28:48,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:28:48,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:28:48,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:28:48,818 INFO L87 Difference]: Start difference. First operand 518 states and 554 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:28:48,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:28:48,975 INFO L93 Difference]: Finished difference Result 604 states and 643 transitions. [2021-11-05 12:28:48,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:28:48,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-05 12:28:48,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:28:48,976 INFO L225 Difference]: With dead ends: 604 [2021-11-05 12:28:48,976 INFO L226 Difference]: Without dead ends: 480 [2021-11-05 12:28:48,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 118.78ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:28:48,977 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 177 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.67ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.78ms IncrementalHoareTripleChecker+Time [2021-11-05 12:28:48,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 967 Invalid, 22 Unknown, 0 Unchecked, 0.67ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 49.78ms Time] [2021-11-05 12:28:48,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-05 12:28:49,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 462. [2021-11-05 12:28:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 458 states have (on average 1.0633187772925765) internal successors, (487), 461 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:28:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 487 transitions. [2021-11-05 12:28:49,015 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 487 transitions. Word has length 114 [2021-11-05 12:28:49,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:28:49,016 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 487 transitions. [2021-11-05 12:28:49,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:28:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 487 transitions. [2021-11-05 12:28:49,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-05 12:28:49,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:28:49,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:28:49,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-05 12:28:49,018 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:28:49,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:28:49,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1490036210, now seen corresponding path program 1 times [2021-11-05 12:28:49,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:28:49,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963033340] [2021-11-05 12:28:49,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:28:49,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:28:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:28:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:28:50,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:28:50,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963033340] [2021-11-05 12:28:50,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963033340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:28:50,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:28:50,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 12:28:50,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483201521] [2021-11-05 12:28:50,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:28:50,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:28:50,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:28:50,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:28:50,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:28:50,472 INFO L87 Difference]: Start difference. First operand 462 states and 487 transitions. Second operand has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:28:52,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:54,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:56,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:58,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:02,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:02,676 INFO L93 Difference]: Finished difference Result 607 states and 638 transitions. [2021-11-05 12:29:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 12:29:02,676 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-05 12:29:02,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:02,677 INFO L225 Difference]: With dead ends: 607 [2021-11-05 12:29:02,677 INFO L226 Difference]: Without dead ends: 407 [2021-11-05 12:29:02,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1932.63ms TimeCoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2021-11-05 12:29:02,678 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 737 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 72 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10030.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.52ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10668.32ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:02,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 1943 Invalid, 833 Unknown, 0 Unchecked, 9.52ms Time], IncrementalHoareTripleChecker [72 Valid, 757 Invalid, 4 Unknown, 0 Unchecked, 10668.32ms Time] [2021-11-05 12:29:02,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-05 12:29:02,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 384. [2021-11-05 12:29:02,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 380 states have (on average 1.055263157894737) internal successors, (401), 383 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:29:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 401 transitions. [2021-11-05 12:29:02,711 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 401 transitions. Word has length 114 [2021-11-05 12:29:02,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:02,711 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 401 transitions. [2021-11-05 12:29:02,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:29:02,711 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 401 transitions. [2021-11-05 12:29:02,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-05 12:29:02,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:02,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:29:02,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-05 12:29:02,712 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:29:02,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:02,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1843124592, now seen corresponding path program 1 times [2021-11-05 12:29:02,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:02,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121442664] [2021-11-05 12:29:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:02,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:29:09,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:09,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121442664] [2021-11-05 12:29:09,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121442664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:09,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:09,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 12:29:09,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108754782] [2021-11-05 12:29:09,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:09,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 12:29:09,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:09,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 12:29:09,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:29:09,651 INFO L87 Difference]: Start difference. First operand 384 states and 401 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:29:11,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:18,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:18,460 INFO L93 Difference]: Finished difference Result 449 states and 466 transitions. [2021-11-05 12:29:18,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-05 12:29:18,460 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-05 12:29:18,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:18,461 INFO L225 Difference]: With dead ends: 449 [2021-11-05 12:29:18,461 INFO L226 Difference]: Without dead ends: 447 [2021-11-05 12:29:18,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 4538.88ms TimeCoverageRelationStatistics Valid=1099, Invalid=4303, Unknown=0, NotChecked=0, Total=5402 [2021-11-05 12:29:18,463 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 1293 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 223 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4614.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.63ms SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4852.07ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:18,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 1472 Invalid, 1337 Unknown, 0 Unchecked, 12.63ms Time], IncrementalHoareTripleChecker [223 Valid, 1113 Invalid, 1 Unknown, 0 Unchecked, 4852.07ms Time] [2021-11-05 12:29:18,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-05 12:29:18,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 382. [2021-11-05 12:29:18,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 379 states have (on average 1.0527704485488127) internal successors, (399), 381 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:29:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 399 transitions. [2021-11-05 12:29:18,496 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 399 transitions. Word has length 114 [2021-11-05 12:29:18,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:18,497 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 399 transitions. [2021-11-05 12:29:18,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:29:18,497 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 399 transitions. [2021-11-05 12:29:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-05 12:29:18,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:18,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:29:18,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-05 12:29:18,498 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:29:18,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:18,498 INFO L85 PathProgramCache]: Analyzing trace with hash 987673239, now seen corresponding path program 1 times [2021-11-05 12:29:18,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:18,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851984227] [2021-11-05 12:29:18,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:18,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:29:21,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:21,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851984227] [2021-11-05 12:29:21,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851984227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:21,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:21,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 12:29:21,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226991128] [2021-11-05 12:29:21,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:21,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 12:29:21,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:21,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 12:29:21,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:29:21,156 INFO L87 Difference]: Start difference. First operand 382 states and 399 transitions. Second operand has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:29:23,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:25,462 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:27,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:29,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:31,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:33,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:36,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:38,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:40,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:42,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:47,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:47,436 INFO L93 Difference]: Finished difference Result 512 states and 530 transitions. [2021-11-05 12:29:47,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-05 12:29:47,437 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-05 12:29:47,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:47,438 INFO L225 Difference]: With dead ends: 512 [2021-11-05 12:29:47,438 INFO L226 Difference]: Without dead ends: 510 [2021-11-05 12:29:47,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 3874.97ms TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2021-11-05 12:29:47,439 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 1026 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 43 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22156.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.92ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23528.56ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:47,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 1670 Invalid, 763 Unknown, 0 Unchecked, 9.92ms Time], IncrementalHoareTripleChecker [43 Valid, 710 Invalid, 10 Unknown, 0 Unchecked, 23528.56ms Time] [2021-11-05 12:29:47,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-11-05 12:29:47,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 380. [2021-11-05 12:29:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 378 states have (on average 1.0476190476190477) internal successors, (396), 379 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:29:47,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 396 transitions. [2021-11-05 12:29:47,474 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 396 transitions. Word has length 119 [2021-11-05 12:29:47,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:47,474 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 396 transitions. [2021-11-05 12:29:47,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:29:47,475 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 396 transitions. [2021-11-05 12:29:47,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-05 12:29:47,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:47,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:29:47,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-05 12:29:47,476 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:29:47,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:47,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1646402588, now seen corresponding path program 1 times [2021-11-05 12:29:47,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:47,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889434046] [2021-11-05 12:29:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:47,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:29:52,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:52,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889434046] [2021-11-05 12:29:52,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889434046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:52,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:52,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:29:52,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034977297] [2021-11-05 12:29:52,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:52,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:29:52,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:52,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:29:52,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:29:52,391 INFO L87 Difference]: Start difference. First operand 380 states and 396 transitions. Second operand has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:29:54,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:56,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:58,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:00,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:02,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:05,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:05,201 INFO L93 Difference]: Finished difference Result 410 states and 423 transitions. [2021-11-05 12:30:05,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 12:30:05,201 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-05 12:30:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:05,202 INFO L225 Difference]: With dead ends: 410 [2021-11-05 12:30:05,202 INFO L226 Difference]: Without dead ends: 394 [2021-11-05 12:30:05,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1682.15ms TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2021-11-05 12:30:05,202 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1215 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 34 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11062.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.55ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11685.08ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:05,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 685 Invalid, 365 Unknown, 0 Unchecked, 5.55ms Time], IncrementalHoareTripleChecker [34 Valid, 326 Invalid, 5 Unknown, 0 Unchecked, 11685.08ms Time] [2021-11-05 12:30:05,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-05 12:30:05,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 349. [2021-11-05 12:30:05,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 347 states have (on average 1.0461095100864553) internal successors, (363), 348 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 363 transitions. [2021-11-05 12:30:05,232 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 363 transitions. Word has length 119 [2021-11-05 12:30:05,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:05,232 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 363 transitions. [2021-11-05 12:30:05,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:05,233 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 363 transitions. [2021-11-05 12:30:05,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-05 12:30:05,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:05,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:30:05,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-05 12:30:05,234 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:30:05,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:05,234 INFO L85 PathProgramCache]: Analyzing trace with hash 224555543, now seen corresponding path program 1 times [2021-11-05 12:30:05,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:05,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647224631] [2021-11-05 12:30:05,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:05,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:30:06,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:06,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647224631] [2021-11-05 12:30:06,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647224631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:06,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:06,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:30:06,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57168520] [2021-11-05 12:30:06,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:06,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:30:06,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:06,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:30:06,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:30:06,016 INFO L87 Difference]: Start difference. First operand 349 states and 363 transitions. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:08,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:10,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:12,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:14,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:16,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:18,640 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:21,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:21,772 INFO L93 Difference]: Finished difference Result 421 states and 433 transitions. [2021-11-05 12:30:21,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 12:30:21,773 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-05 12:30:21,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:21,773 INFO L225 Difference]: With dead ends: 421 [2021-11-05 12:30:21,773 INFO L226 Difference]: Without dead ends: 349 [2021-11-05 12:30:21,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1395.93ms TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2021-11-05 12:30:21,774 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 995 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 77 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13770.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.77ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14590.44ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:21,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 1052 Invalid, 659 Unknown, 0 Unchecked, 7.77ms Time], IncrementalHoareTripleChecker [77 Valid, 576 Invalid, 6 Unknown, 0 Unchecked, 14590.44ms Time] [2021-11-05 12:30:21,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-11-05 12:30:21,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 327. [2021-11-05 12:30:21,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 325 states have (on average 1.04) internal successors, (338), 326 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:21,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 338 transitions. [2021-11-05 12:30:21,804 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 338 transitions. Word has length 121 [2021-11-05 12:30:21,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:21,804 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 338 transitions. [2021-11-05 12:30:21,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:21,804 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 338 transitions. [2021-11-05 12:30:21,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-05 12:30:21,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:21,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:30:21,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-05 12:30:21,805 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:30:21,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:21,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1626989591, now seen corresponding path program 1 times [2021-11-05 12:30:21,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:21,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853177343] [2021-11-05 12:30:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:21,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:27,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:30:27,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:27,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853177343] [2021-11-05 12:30:27,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853177343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:27,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:27,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-05 12:30:27,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118693802] [2021-11-05 12:30:27,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:27,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-05 12:30:27,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:27,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-05 12:30:27,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-11-05 12:30:27,800 INFO L87 Difference]: Start difference. First operand 327 states and 338 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:29,843 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:31,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:34,142 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:36,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:38,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:40,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:42,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:44,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:46,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:49,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:51,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:00,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:00,793 INFO L93 Difference]: Finished difference Result 338 states and 347 transitions. [2021-11-05 12:31:00,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-05 12:31:00,794 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-05 12:31:00,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:00,794 INFO L225 Difference]: With dead ends: 338 [2021-11-05 12:31:00,794 INFO L226 Difference]: Without dead ends: 266 [2021-11-05 12:31:00,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 7496.34ms TimeCoverageRelationStatistics Valid=653, Invalid=3769, Unknown=0, NotChecked=0, Total=4422 [2021-11-05 12:31:00,796 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 1536 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 220 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25551.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 2309 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.11ms SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27233.17ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:00,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1536 Valid, 2309 Invalid, 1701 Unknown, 0 Unchecked, 16.11ms Time], IncrementalHoareTripleChecker [220 Valid, 1470 Invalid, 11 Unknown, 0 Unchecked, 27233.17ms Time] [2021-11-05 12:31:00,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-05 12:31:00,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2021-11-05 12:31:00,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 262 states have (on average 1.0381679389312977) internal successors, (272), 263 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 272 transitions. [2021-11-05 12:31:00,815 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 272 transitions. Word has length 121 [2021-11-05 12:31:00,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:00,815 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 272 transitions. [2021-11-05 12:31:00,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:00,815 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 272 transitions. [2021-11-05 12:31:00,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-05 12:31:00,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:00,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:31:00,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-05 12:31:00,816 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:31:00,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:00,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2027254843, now seen corresponding path program 1 times [2021-11-05 12:31:00,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:00,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377030503] [2021-11-05 12:31:00,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:00,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:31:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:31:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:31:08,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:31:08,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377030503] [2021-11-05 12:31:08,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377030503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:31:08,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:31:08,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-05 12:31:08,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253017564] [2021-11-05 12:31:08,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:31:08,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-05 12:31:08,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:31:08,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-05 12:31:08,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-11-05 12:31:08,992 INFO L87 Difference]: Start difference. First operand 264 states and 272 transitions. Second operand has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:11,034 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:13,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:15,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:17,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:19,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:21,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:24,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:24,764 INFO L93 Difference]: Finished difference Result 264 states and 272 transitions. [2021-11-05 12:31:24,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 12:31:24,764 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-05 12:31:24,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:24,765 INFO L225 Difference]: With dead ends: 264 [2021-11-05 12:31:24,765 INFO L226 Difference]: Without dead ends: 262 [2021-11-05 12:31:24,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3165.17ms TimeCoverageRelationStatistics Valid=197, Invalid=733, Unknown=0, NotChecked=0, Total=930 [2021-11-05 12:31:24,765 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 660 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 37 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13016.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.24ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13745.67ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:24,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 1020 Invalid, 386 Unknown, 0 Unchecked, 5.24ms Time], IncrementalHoareTripleChecker [37 Valid, 343 Invalid, 6 Unknown, 0 Unchecked, 13745.67ms Time] [2021-11-05 12:31:24,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-05 12:31:24,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-11-05 12:31:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.0306513409961686) internal successors, (269), 261 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:24,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 269 transitions. [2021-11-05 12:31:24,785 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 269 transitions. Word has length 123 [2021-11-05 12:31:24,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:24,786 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 269 transitions. [2021-11-05 12:31:24,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:24,786 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 269 transitions. [2021-11-05 12:31:24,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-05 12:31:24,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:24,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:31:24,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-05 12:31:24,786 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:31:24,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:24,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1760719075, now seen corresponding path program 1 times [2021-11-05 12:31:24,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:24,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912469638] [2021-11-05 12:31:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:24,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:31:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:31:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:31:30,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:31:30,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912469638] [2021-11-05 12:31:30,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912469638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:31:30,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:31:30,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:31:30,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144419287] [2021-11-05 12:31:30,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:31:30,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:31:30,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:31:30,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:31:30,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:31:30,099 INFO L87 Difference]: Start difference. First operand 262 states and 269 transitions. Second operand has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 14 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:32,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:34,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:36,390 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:38,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:40,667 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:42,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:44,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:46,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:46,756 INFO L93 Difference]: Finished difference Result 271 states and 277 transitions. [2021-11-05 12:31:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 12:31:46,757 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 14 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-05 12:31:46,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:46,758 INFO L225 Difference]: With dead ends: 271 [2021-11-05 12:31:46,758 INFO L226 Difference]: Without dead ends: 255 [2021-11-05 12:31:46,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1459.74ms TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2021-11-05 12:31:46,758 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 595 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 19 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14758.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.22ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15653.75ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:46,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 581 Invalid, 264 Unknown, 0 Unchecked, 3.22ms Time], IncrementalHoareTripleChecker [19 Valid, 238 Invalid, 7 Unknown, 0 Unchecked, 15653.75ms Time] [2021-11-05 12:31:46,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-05 12:31:46,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-05 12:31:46,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.0196850393700787) internal successors, (259), 254 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:46,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 259 transitions. [2021-11-05 12:31:46,779 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 259 transitions. Word has length 139 [2021-11-05 12:31:46,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:46,779 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 259 transitions. [2021-11-05 12:31:46,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 14 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:46,780 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 259 transitions. [2021-11-05 12:31:46,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-05 12:31:46,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:46,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:31:46,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-05 12:31:46,781 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:31:46,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:46,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1101238039, now seen corresponding path program 1 times [2021-11-05 12:31:46,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:46,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575980410] [2021-11-05 12:31:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:46,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:31:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:31:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:31:48,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:31:48,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575980410] [2021-11-05 12:31:48,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575980410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:31:48,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:31:48,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:31:48,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524652226] [2021-11-05 12:31:48,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:31:48,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:31:48,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:31:48,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:31:48,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:31:48,097 INFO L87 Difference]: Start difference. First operand 255 states and 259 transitions. Second operand has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 13 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:50,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:52,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:54,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:56,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:58,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:58,614 INFO L93 Difference]: Finished difference Result 262 states and 265 transitions. [2021-11-05 12:31:58,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 12:31:58,615 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 13 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-05 12:31:58,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:58,615 INFO L225 Difference]: With dead ends: 262 [2021-11-05 12:31:58,615 INFO L226 Difference]: Without dead ends: 142 [2021-11-05 12:31:58,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1479.38ms TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2021-11-05 12:31:58,616 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 575 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 56 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8861.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.60ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9413.65ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:58,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 734 Invalid, 424 Unknown, 0 Unchecked, 3.60ms Time], IncrementalHoareTripleChecker [56 Valid, 364 Invalid, 4 Unknown, 0 Unchecked, 9413.65ms Time] [2021-11-05 12:31:58,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-05 12:31:58,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-11-05 12:31:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.0141843971631206) internal successors, (143), 141 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:58,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2021-11-05 12:31:58,627 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 139 [2021-11-05 12:31:58,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:58,627 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2021-11-05 12:31:58,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 13 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:58,627 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2021-11-05 12:31:58,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-05 12:31:58,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:58,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:31:58,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-05 12:31:58,628 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 12:31:58,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:58,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1044157975, now seen corresponding path program 1 times [2021-11-05 12:31:58,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:58,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044128067] [2021-11-05 12:31:58,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:58,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Killed by 15