./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_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 f26a5d85d152e590b5f8a93f229efbb28bdd5e77c34d7106bb5825fc4b732cf6 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 12:30:10,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 12:30:10,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 12:30:10,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 12:30:10,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 12:30:10,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 12:30:10,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 12:30:10,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 12:30:10,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 12:30:10,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 12:30:10,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 12:30:10,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 12:30:10,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 12:30:10,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 12:30:10,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 12:30:10,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 12:30:10,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 12:30:10,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 12:30:10,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 12:30:10,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 12:30:10,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 12:30:10,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 12:30:10,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 12:30:10,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 12:30:10,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 12:30:10,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 12:30:10,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 12:30:10,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 12:30:10,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 12:30:10,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 12:30:10,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 12:30:10,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 12:30:10,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 12:30:10,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 12:30:10,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 12:30:10,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 12:30:10,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 12:30:10,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 12:30:10,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 12:30:10,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 12:30:10,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 12:30:10,591 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 12:30:10,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 12:30:10,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 12:30:10,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 12:30:10,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 12:30:10,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 12:30:10,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 12:30:10,626 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 12:30:10,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 12:30:10,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 12:30:10,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 12:30:10,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 12:30:10,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 12:30:10,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 12:30:10,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 12:30:10,628 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 12:30:10,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 12:30:10,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 12:30:10,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 12:30:10,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 12:30:10,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:30:10,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 12:30:10,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 12:30:10,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 12:30:10,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 12:30:10,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 12:30:10,630 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 12:30:10,630 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 12:30:10,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 12:30:10,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 12:30:10,631 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f26a5d85d152e590b5f8a93f229efbb28bdd5e77c34d7106bb5825fc4b732cf6 [2021-11-05 12:30:10,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 12:30:10,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 12:30:10,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 12:30:10,926 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 12:30:10,928 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 12:30:10,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i [2021-11-05 12:30:10,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe6b183a/315e8e48f24a480580ae972f72cffdec/FLAG46fbbdd7d [2021-11-05 12:30:11,547 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 12:30:11,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i [2021-11-05 12:30:11,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe6b183a/315e8e48f24a480580ae972f72cffdec/FLAG46fbbdd7d [2021-11-05 12:30:11,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe6b183a/315e8e48f24a480580ae972f72cffdec [2021-11-05 12:30:11,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 12:30:11,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 12:30:11,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 12:30:11,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 12:30:11,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 12:30:11,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:30:11" (1/1) ... [2021-11-05 12:30:11,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e8f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:30:11, skipping insertion in model container [2021-11-05 12:30:11,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:30:11" (1/1) ... [2021-11-05 12:30:11,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 12:30:11,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 12:30:12,054 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i[4497,4510] [2021-11-05 12:30:12,059 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i[4557,4570] [2021-11-05 12:30:12,071 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:30:12,074 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:30:12,559 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:12,560 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:12,560 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:12,561 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:12,561 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:12,569 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:12,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:12,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:12,572 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:12,822 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:30:12,823 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:30:12,825 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:30:12,826 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:30:12,829 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:30:12,831 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:30:12,831 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:30:12,832 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:30:12,835 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:30:12,837 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:30:12,929 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:30:12,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:12,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:13,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:30:13,094 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 12:30:13,111 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i[4497,4510] [2021-11-05 12:30:13,111 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i[4557,4570] [2021-11-05 12:30:13,113 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:30:13,113 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:30:13,147 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:13,147 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:13,148 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:13,148 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:13,149 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:13,153 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:13,153 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:13,154 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:13,154 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:13,176 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:30:13,180 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:30:13,181 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:30:13,181 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:30:13,182 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:30:13,183 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:30:13,183 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:30:13,185 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:30:13,186 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:30:13,186 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:30:13,202 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:30:13,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:13,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:30:13,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:30:13,506 INFO L208 MainTranslator]: Completed translation [2021-11-05 12:30:13,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:30:13 WrapperNode [2021-11-05 12:30:13,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 12:30:13,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 12:30:13,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 12:30:13,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 12:30:13,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:30:13" (1/1) ... [2021-11-05 12:30:13,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:30:13" (1/1) ... [2021-11-05 12:30:13,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 12:30:13,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 12:30:13,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 12:30:13,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 12:30:13,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:30:13" (1/1) ... [2021-11-05 12:30:13,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:30:13" (1/1) ... [2021-11-05 12:30:13,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:30:13" (1/1) ... [2021-11-05 12:30:13,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:30:13" (1/1) ... [2021-11-05 12:30:13,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:30:13" (1/1) ... [2021-11-05 12:30:13,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:30:13" (1/1) ... [2021-11-05 12:30:13,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:30:13" (1/1) ... [2021-11-05 12:30:13,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 12:30:13,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 12:30:13,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 12:30:13,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 12:30:13,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:30:13" (1/1) ... [2021-11-05 12:30:13,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:30:13,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:30:13,842 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 12:30:13,873 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 12:30:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 12:30:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 12:30:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 12:30:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 12:30:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 12:30:13,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 12:30:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 12:30:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 12:30:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 12:30:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 12:30:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 12:30:21,362 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 12:30:21,363 INFO L299 CfgBuilder]: Removed 58 assume(true) statements. [2021-11-05 12:30:21,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:30:21 BoogieIcfgContainer [2021-11-05 12:30:21,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 12:30:21,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 12:30:21,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 12:30:21,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 12:30:21,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 12:30:11" (1/3) ... [2021-11-05 12:30:21,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650b096b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:30:21, skipping insertion in model container [2021-11-05 12:30:21,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:30:13" (2/3) ... [2021-11-05 12:30:21,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650b096b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:30:21, skipping insertion in model container [2021-11-05 12:30:21,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:30:21" (3/3) ... [2021-11-05 12:30:21,371 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_advance_harness.i [2021-11-05 12:30:21,374 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 12:30:21,375 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-05 12:30:21,406 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 12:30:21,410 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 12:30:21,410 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-05 12:30:21,421 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 126 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:21,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-05 12:30:21,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:21,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 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 12:30:21,427 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:30:21,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:21,431 INFO L85 PathProgramCache]: Analyzing trace with hash -443327314, now seen corresponding path program 1 times [2021-11-05 12:30:21,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:21,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4476383] [2021-11-05 12:30:21,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:21,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:22,027 INFO 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 12:30:22,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:22,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4476383] [2021-11-05 12:30:22,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4476383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:22,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:22,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:30:22,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509398435] [2021-11-05 12:30:22,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:22,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:30:22,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:22,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:30:22,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:30:22,058 INFO L87 Difference]: Start difference. First operand has 127 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 126 states have internal predecessors, (173), 0 states have call successors, (0), 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 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:22,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:22,232 INFO L93 Difference]: Finished difference Result 249 states and 339 transitions. [2021-11-05 12:30:22,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:30:22,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-05 12:30:22,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:22,240 INFO L225 Difference]: With dead ends: 249 [2021-11-05 12:30:22,241 INFO L226 Difference]: Without dead ends: 119 [2021-11-05 12:30:22,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.61ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:30:22,251 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 205 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.84ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 130.54ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:22,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 221 Invalid, 36 Unknown, 0 Unchecked, 6.84ms Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 130.54ms Time] [2021-11-05 12:30:22,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-05 12:30:22,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-05 12:30:22,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 109 states have (on average 1.3394495412844036) internal successors, (146), 118 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:22,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 146 transitions. [2021-11-05 12:30:22,303 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 146 transitions. Word has length 26 [2021-11-05 12:30:22,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:22,303 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 146 transitions. [2021-11-05 12:30:22,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:22,304 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 146 transitions. [2021-11-05 12:30:22,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-05 12:30:22,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:22,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:30:22,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 12:30:22,313 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:30:22,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:22,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1924042484, now seen corresponding path program 1 times [2021-11-05 12:30:22,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:22,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473501307] [2021-11-05 12:30:22,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:22,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:22,623 INFO 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 12:30:22,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:22,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473501307] [2021-11-05 12:30:22,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473501307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:22,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:22,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:30:22,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884167635] [2021-11-05 12:30:22,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:22,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:30:22,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:22,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:30:22,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:30:22,626 INFO L87 Difference]: Start difference. First operand 119 states and 146 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:22,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:22,870 INFO L93 Difference]: Finished difference Result 186 states and 223 transitions. [2021-11-05 12:30:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:30:22,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-05 12:30:22,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:22,871 INFO L225 Difference]: With dead ends: 186 [2021-11-05 12:30:22,872 INFO L226 Difference]: Without dead ends: 119 [2021-11-05 12:30:22,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 127.63ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:30:22,873 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 292 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.29ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146.78ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:22,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 223 Invalid, 41 Unknown, 0 Unchecked, 4.29ms Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 146.78ms Time] [2021-11-05 12:30:22,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-05 12:30:22,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-05 12:30:22,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 109 states have (on average 1.3302752293577982) internal successors, (145), 118 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:22,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 145 transitions. [2021-11-05 12:30:22,879 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 145 transitions. Word has length 30 [2021-11-05 12:30:22,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:22,879 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 145 transitions. [2021-11-05 12:30:22,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:22,880 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 145 transitions. [2021-11-05 12:30:22,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-05 12:30:22,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:22,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:30:22,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 12:30:22,881 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:30:22,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:22,881 INFO L85 PathProgramCache]: Analyzing trace with hash 434837223, now seen corresponding path program 1 times [2021-11-05 12:30:22,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:22,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848192142] [2021-11-05 12:30:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:22,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:23,383 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 12:30:23,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:23,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848192142] [2021-11-05 12:30:23,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848192142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:23,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:23,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:30:23,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291699889] [2021-11-05 12:30:23,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:23,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:30:23,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:23,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:30:23,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:30:23,385 INFO L87 Difference]: Start difference. First operand 119 states and 145 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:24,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:24,091 INFO L93 Difference]: Finished difference Result 217 states and 256 transitions. [2021-11-05 12:30:24,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:30:24,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-05 12:30:24,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:24,092 INFO L225 Difference]: With dead ends: 217 [2021-11-05 12:30:24,092 INFO L226 Difference]: Without dead ends: 211 [2021-11-05 12:30:24,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 235.71ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:30:24,093 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 158 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 507.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.69ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 549.49ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:24,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 680 Invalid, 221 Unknown, 0 Unchecked, 3.69ms Time], IncrementalHoareTripleChecker [35 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 549.49ms Time] [2021-11-05 12:30:24,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-05 12:30:24,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 131. [2021-11-05 12:30:24,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 121 states have (on average 1.2975206611570247) internal successors, (157), 130 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2021-11-05 12:30:24,108 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 32 [2021-11-05 12:30:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:24,110 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2021-11-05 12:30:24,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:24,110 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2021-11-05 12:30:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-05 12:30:24,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:24,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:24,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 12:30:24,112 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:30:24,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:24,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2134165153, now seen corresponding path program 1 times [2021-11-05 12:30:24,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:24,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883981318] [2021-11-05 12:30:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:24,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:25,195 INFO 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 12:30:25,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:25,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883981318] [2021-11-05 12:30:25,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883981318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:25,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:25,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:30:25,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698770594] [2021-11-05 12:30:25,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:25,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:30:25,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:25,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:30:25,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:30:25,197 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:27,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:29,367 WARN L515 Checker$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 12:30:31,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:33,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:35,656 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:37,785 WARN L515 Checker$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 12:30:39,888 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 12:30:42,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:42,910 INFO L93 Difference]: Finished difference Result 339 states and 402 transitions. [2021-11-05 12:30:42,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-05 12:30:42,911 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-05 12:30:42,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:42,913 INFO L225 Difference]: With dead ends: 339 [2021-11-05 12:30:42,913 INFO L226 Difference]: Without dead ends: 231 [2021-11-05 12:30:42,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1746.08ms TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2021-11-05 12:30:42,914 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 414 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 63 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15483.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.00ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16289.52ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:42,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 860 Invalid, 551 Unknown, 0 Unchecked, 10.00ms Time], IncrementalHoareTripleChecker [63 Valid, 481 Invalid, 7 Unknown, 0 Unchecked, 16289.52ms Time] [2021-11-05 12:30:42,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-05 12:30:42,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 150. [2021-11-05 12:30:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 140 states have (on average 1.2714285714285714) internal successors, (178), 149 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:42,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 178 transitions. [2021-11-05 12:30:42,932 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 178 transitions. Word has length 36 [2021-11-05 12:30:42,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:42,935 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 178 transitions. [2021-11-05 12:30:42,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 178 transitions. [2021-11-05 12:30:42,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-05 12:30:42,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:42,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:42,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 12:30:42,937 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:30:42,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:42,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1573996129, now seen corresponding path program 1 times [2021-11-05 12:30:42,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:42,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050073533] [2021-11-05 12:30:42,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:42,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:43,125 INFO 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 12:30:43,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:43,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050073533] [2021-11-05 12:30:43,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050073533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:43,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:43,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 12:30:43,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003847379] [2021-11-05 12:30:43,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:43,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 12:30:43,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:43,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 12:30:43,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 12:30:43,130 INFO L87 Difference]: Start difference. First operand 150 states and 178 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:43,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:43,183 INFO L93 Difference]: Finished difference Result 241 states and 285 transitions. [2021-11-05 12:30:43,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 12:30:43,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-05 12:30:43,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:43,185 INFO L225 Difference]: With dead ends: 241 [2021-11-05 12:30:43,185 INFO L226 Difference]: Without dead ends: 152 [2021-11-05 12:30:43,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 12:30:43,186 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.39ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.05ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:43,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 283 Invalid, 6 Unknown, 0 Unchecked, 0.39ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 48.05ms Time] [2021-11-05 12:30:43,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-05 12:30:43,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-05 12:30:43,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 142 states have (on average 1.267605633802817) internal successors, (180), 151 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:43,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2021-11-05 12:30:43,192 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 36 [2021-11-05 12:30:43,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:43,192 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2021-11-05 12:30:43,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:43,192 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2021-11-05 12:30:43,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-05 12:30:43,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:43,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:43,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 12:30:43,193 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:30:43,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:43,194 INFO L85 PathProgramCache]: Analyzing trace with hash 562878879, now seen corresponding path program 1 times [2021-11-05 12:30:43,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:43,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078081278] [2021-11-05 12:30:43,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:43,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:44,459 INFO 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 12:30:44,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:44,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078081278] [2021-11-05 12:30:44,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078081278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:44,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:44,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:30:44,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765035402] [2021-11-05 12:30:44,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:44,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:30:44,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:44,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:30:44,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:30:44,461 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:46,503 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 12:30:48,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:50,700 WARN L515 Checker$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 12:30:52,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:54,892 WARN L515 Checker$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 12:31:00,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:00,436 INFO L93 Difference]: Finished difference Result 343 states and 402 transitions. [2021-11-05 12:31:00,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-05 12:31:00,437 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-05 12:31:00,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:00,438 INFO L225 Difference]: With dead ends: 343 [2021-11-05 12:31:00,438 INFO L226 Difference]: Without dead ends: 261 [2021-11-05 12:31:00,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 3669.40ms TimeCoverageRelationStatistics Valid=341, Invalid=1141, Unknown=0, NotChecked=0, Total=1482 [2021-11-05 12:31:00,439 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 561 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 81 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12148.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.82ms SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12806.88ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:00,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 996 Invalid, 685 Unknown, 0 Unchecked, 12.82ms Time], IncrementalHoareTripleChecker [81 Valid, 599 Invalid, 5 Unknown, 0 Unchecked, 12806.88ms Time] [2021-11-05 12:31:00,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-05 12:31:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 152. [2021-11-05 12:31:00,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 142 states have (on average 1.267605633802817) internal successors, (180), 151 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:00,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2021-11-05 12:31:00,456 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 36 [2021-11-05 12:31:00,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:00,457 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2021-11-05 12:31:00,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:00,457 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2021-11-05 12:31:00,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-05 12:31:00,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:00,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:31:00,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 12:31:00,461 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:31:00,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:00,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1581952149, now seen corresponding path program 1 times [2021-11-05 12:31:00,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:00,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197221512] [2021-11-05 12:31:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:00,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:31:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:31:00,682 INFO 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 12:31:00,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:31:00,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197221512] [2021-11-05 12:31:00,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197221512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:31:00,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:31:00,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:31:00,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641536446] [2021-11-05 12:31:00,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:31:00,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:31:00,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:31:00,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:31:00,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:31:00,683 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:00,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:00,802 INFO L93 Difference]: Finished difference Result 208 states and 241 transitions. [2021-11-05 12:31:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:31:00,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-05 12:31:00,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:00,803 INFO L225 Difference]: With dead ends: 208 [2021-11-05 12:31:00,803 INFO L226 Difference]: Without dead ends: 152 [2021-11-05 12:31:00,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.69ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:31:00,804 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 89 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.62ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.11ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:00,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 303 Invalid, 29 Unknown, 0 Unchecked, 0.62ms Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 89.11ms Time] [2021-11-05 12:31:00,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-05 12:31:00,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-05 12:31:00,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 142 states have (on average 1.2605633802816902) internal successors, (179), 151 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:00,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2021-11-05 12:31:00,809 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 37 [2021-11-05 12:31:00,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:00,810 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2021-11-05 12:31:00,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:00,810 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2021-11-05 12:31:00,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-05 12:31:00,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:00,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:31:00,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 12:31:00,811 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:31:00,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:00,817 INFO L85 PathProgramCache]: Analyzing trace with hash -185094105, now seen corresponding path program 1 times [2021-11-05 12:31:00,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:00,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57368525] [2021-11-05 12:31:00,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:00,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:31:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:31:01,278 INFO 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 12:31:01,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:31:01,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57368525] [2021-11-05 12:31:01,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57368525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:31:01,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:31:01,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:31:01,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710989142] [2021-11-05 12:31:01,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:31:01,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:31:01,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:31:01,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:31:01,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:31:01,280 INFO L87 Difference]: Start difference. First operand 152 states and 179 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 12:31:01,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:01,911 INFO L93 Difference]: Finished difference Result 329 states and 376 transitions. [2021-11-05 12:31:01,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:31:01,912 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 12:31:01,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:01,913 INFO L225 Difference]: With dead ends: 329 [2021-11-05 12:31:01,913 INFO L226 Difference]: Without dead ends: 208 [2021-11-05 12:31:01,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 182.61ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:31:01,914 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 96 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 497.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.45ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 528.87ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:01,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 702 Invalid, 225 Unknown, 0 Unchecked, 2.45ms Time], IncrementalHoareTripleChecker [29 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 528.87ms Time] [2021-11-05 12:31:01,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-05 12:31:01,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 152. [2021-11-05 12:31:01,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 142 states have (on average 1.2464788732394365) internal successors, (177), 151 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:01,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 177 transitions. [2021-11-05 12:31:01,924 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 177 transitions. Word has length 40 [2021-11-05 12:31:01,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:01,924 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 177 transitions. [2021-11-05 12:31:01,924 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 12:31:01,925 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 177 transitions. [2021-11-05 12:31:01,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 12:31:01,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:01,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:31:01,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 12:31:01,926 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:31:01,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:01,926 INFO L85 PathProgramCache]: Analyzing trace with hash -139950484, now seen corresponding path program 1 times [2021-11-05 12:31:01,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:01,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946502861] [2021-11-05 12:31:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:01,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:31:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:31:02,273 INFO 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 12:31:02,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:31:02,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946502861] [2021-11-05 12:31:02,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946502861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:31:02,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:31:02,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:31:02,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671759162] [2021-11-05 12:31:02,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:31:02,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:31:02,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:31:02,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:31:02,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:31:02,275 INFO L87 Difference]: Start difference. First operand 152 states and 177 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 12:31:04,319 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 12:31:04,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:04,939 INFO L93 Difference]: Finished difference Result 317 states and 363 transitions. [2021-11-05 12:31:04,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:31:04,939 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 12:31:04,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:04,940 INFO L225 Difference]: With dead ends: 317 [2021-11-05 12:31:04,940 INFO L226 Difference]: Without dead ends: 200 [2021-11-05 12:31:04,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 88.29ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:31:04,941 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 202 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2476.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2623.59ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:04,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 336 Invalid, 184 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [26 Valid, 157 Invalid, 1 Unknown, 0 Unchecked, 2623.59ms Time] [2021-11-05 12:31:04,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-05 12:31:04,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 152. [2021-11-05 12:31:04,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 142 states have (on average 1.2112676056338028) internal successors, (172), 151 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 172 transitions. [2021-11-05 12:31:04,945 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 172 transitions. Word has length 42 [2021-11-05 12:31:04,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:04,945 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 172 transitions. [2021-11-05 12:31:04,945 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 12:31:04,945 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 172 transitions. [2021-11-05 12:31:04,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 12:31:04,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:04,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:31:04,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 12:31:04,946 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:31:04,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:04,946 INFO L85 PathProgramCache]: Analyzing trace with hash 561649390, now seen corresponding path program 1 times [2021-11-05 12:31:04,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:04,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183615438] [2021-11-05 12:31:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:04,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:31:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:31:05,866 INFO 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 12:31:05,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:31:05,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183615438] [2021-11-05 12:31:05,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183615438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:31:05,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:31:05,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:31:05,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418776313] [2021-11-05 12:31:05,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:31:05,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:31:05,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:31:05,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:31:05,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:31:05,867 INFO L87 Difference]: Start difference. First operand 152 states and 172 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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 12:31:07,914 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 12:31:10,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:12,165 WARN L515 Checker$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 12:31:14,275 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:16,386 WARN L515 Checker$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 12:31:18,517 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:20,626 WARN L515 Checker$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 12:31:22,724 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 12:31:26,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:26,747 INFO L93 Difference]: Finished difference Result 347 states and 392 transitions. [2021-11-05 12:31:26,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-05 12:31:26,748 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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 12:31:26,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:26,749 INFO L225 Difference]: With dead ends: 347 [2021-11-05 12:31:26,749 INFO L226 Difference]: Without dead ends: 265 [2021-11-05 12:31:26,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2929.81ms TimeCoverageRelationStatistics Valid=282, Invalid=710, Unknown=0, NotChecked=0, Total=992 [2021-11-05 12:31:26,750 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 734 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 48 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17369.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.03ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18346.95ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:26,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 714 Invalid, 509 Unknown, 0 Unchecked, 6.03ms Time], IncrementalHoareTripleChecker [48 Valid, 453 Invalid, 8 Unknown, 0 Unchecked, 18346.95ms Time] [2021-11-05 12:31:26,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-05 12:31:26,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 159. [2021-11-05 12:31:26,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 149 states have (on average 1.2147651006711409) internal successors, (181), 158 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:26,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 181 transitions. [2021-11-05 12:31:26,756 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 181 transitions. Word has length 42 [2021-11-05 12:31:26,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:26,756 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 181 transitions. [2021-11-05 12:31:26,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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 12:31:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 181 transitions. [2021-11-05 12:31:26,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 12:31:26,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:26,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:31:26,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 12:31:26,757 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:31:26,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:26,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1036273874, now seen corresponding path program 1 times [2021-11-05 12:31:26,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:26,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588809595] [2021-11-05 12:31:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:26,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:31:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:31:27,517 INFO 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 12:31:27,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:31:27,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588809595] [2021-11-05 12:31:27,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588809595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:31:27,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:31:27,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:31:27,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205907213] [2021-11-05 12:31:27,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:31:27,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:31:27,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:31:27,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:31:27,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:31:27,518 INFO L87 Difference]: Start difference. First operand 159 states and 181 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 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 12:31:29,560 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 12:31:31,678 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:33,793 WARN L515 Checker$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 12:31:35,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:35,092 INFO L93 Difference]: Finished difference Result 276 states and 314 transitions. [2021-11-05 12:31:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:31:35,093 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 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 12:31:35,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:35,093 INFO L225 Difference]: With dead ends: 276 [2021-11-05 12:31:35,093 INFO L226 Difference]: Without dead ends: 176 [2021-11-05 12:31:35,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 378.97ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:31:35,094 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 138 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6931.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.76ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7359.20ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:35,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 606 Invalid, 306 Unknown, 0 Unchecked, 9.76ms Time], IncrementalHoareTripleChecker [13 Valid, 290 Invalid, 3 Unknown, 0 Unchecked, 7359.20ms Time] [2021-11-05 12:31:35,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-05 12:31:35,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 162. [2021-11-05 12:31:35,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 152 states have (on average 1.2105263157894737) internal successors, (184), 161 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 184 transitions. [2021-11-05 12:31:35,099 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 184 transitions. Word has length 42 [2021-11-05 12:31:35,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:35,101 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 184 transitions. [2021-11-05 12:31:35,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 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 12:31:35,102 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 184 transitions. [2021-11-05 12:31:35,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-05 12:31:35,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:35,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:31:35,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 12:31:35,103 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:31:35,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:35,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1560368280, now seen corresponding path program 1 times [2021-11-05 12:31:35,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:35,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657278992] [2021-11-05 12:31:35,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:35,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:31:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:31:35,378 INFO 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 12:31:35,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:31:35,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657278992] [2021-11-05 12:31:35,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657278992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:31:35,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:31:35,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:31:35,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075125854] [2021-11-05 12:31:35,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:31:35,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:31:35,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:31:35,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:31:35,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:31:35,379 INFO L87 Difference]: Start difference. First operand 162 states and 184 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:37,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:39,524 WARN L515 Checker$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 12:31:40,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:40,112 INFO L93 Difference]: Finished difference Result 256 states and 288 transitions. [2021-11-05 12:31:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:31:40,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-05 12:31:40,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:40,116 INFO L225 Difference]: With dead ends: 256 [2021-11-05 12:31:40,116 INFO L226 Difference]: Without dead ends: 193 [2021-11-05 12:31:40,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 134.10ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:31:40,117 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 32 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4400.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.38ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4652.36ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:40,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 432 Invalid, 155 Unknown, 0 Unchecked, 1.38ms Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 2 Unknown, 0 Unchecked, 4652.36ms Time] [2021-11-05 12:31:40,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-05 12:31:40,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 185. [2021-11-05 12:31:40,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 175 states have (on average 1.2057142857142857) internal successors, (211), 184 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:40,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 211 transitions. [2021-11-05 12:31:40,123 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 211 transitions. Word has length 43 [2021-11-05 12:31:40,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:40,123 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 211 transitions. [2021-11-05 12:31:40,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:40,126 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 211 transitions. [2021-11-05 12:31:40,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-05 12:31:40,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:40,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:31:40,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 12:31:40,127 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:31:40,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:40,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1955314904, now seen corresponding path program 1 times [2021-11-05 12:31:40,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:40,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107416509] [2021-11-05 12:31:40,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:40,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:31:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:31:41,571 INFO 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 12:31:41,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:31:41,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107416509] [2021-11-05 12:31:41,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107416509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:31:41,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:31:41,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 12:31:41,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971909403] [2021-11-05 12:31:41,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:31:41,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 12:31:41,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:31:41,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 12:31:41,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:31:41,581 INFO L87 Difference]: Start difference. First operand 185 states and 211 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:43,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:45,719 WARN L515 Checker$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 12:31:47,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:49,960 WARN L515 Checker$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 12:31:52,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:54,196 WARN L515 Checker$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 12:31:56,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:58,434 WARN L515 Checker$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 12:32:05,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:32:05,309 INFO L93 Difference]: Finished difference Result 330 states and 366 transitions. [2021-11-05 12:32:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-05 12:32:05,310 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-05 12:32:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:32:05,310 INFO L225 Difference]: With dead ends: 330 [2021-11-05 12:32:05,310 INFO L226 Difference]: Without dead ends: 267 [2021-11-05 12:32:05,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 4998.99ms TimeCoverageRelationStatistics Valid=524, Invalid=2128, Unknown=0, NotChecked=0, Total=2652 [2021-11-05 12:32:05,311 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 731 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 91 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18354.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.42ms SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19432.52ms IncrementalHoareTripleChecker+Time [2021-11-05 12:32:05,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 1132 Invalid, 878 Unknown, 0 Unchecked, 9.42ms Time], IncrementalHoareTripleChecker [91 Valid, 779 Invalid, 8 Unknown, 0 Unchecked, 19432.52ms Time] [2021-11-05 12:32:05,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-05 12:32:05,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 182. [2021-11-05 12:32:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 172 states have (on average 1.2093023255813953) internal successors, (208), 181 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:05,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 208 transitions. [2021-11-05 12:32:05,316 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 208 transitions. Word has length 43 [2021-11-05 12:32:05,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:32:05,317 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 208 transitions. [2021-11-05 12:32:05,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:05,317 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 208 transitions. [2021-11-05 12:32:05,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 12:32:05,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:32:05,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:32:05,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 12:32:05,317 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:32:05,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:32:05,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1723612779, now seen corresponding path program 1 times [2021-11-05 12:32:05,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:32:05,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515428874] [2021-11-05 12:32:05,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:05,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:32:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:05,499 INFO 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 12:32:05,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:32:05,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515428874] [2021-11-05 12:32:05,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515428874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:32:05,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:32:05,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:32:05,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608785787] [2021-11-05 12:32:05,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:32:05,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:32:05,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:32:05,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:32:05,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:32:05,500 INFO L87 Difference]: Start difference. First operand 182 states and 208 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:05,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:32:05,621 INFO L93 Difference]: Finished difference Result 218 states and 244 transitions. [2021-11-05 12:32:05,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:32:05,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-05 12:32:05,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:32:05,623 INFO L225 Difference]: With dead ends: 218 [2021-11-05 12:32:05,623 INFO L226 Difference]: Without dead ends: 182 [2021-11-05 12:32:05,623 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 12:32:05,623 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 130 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.65ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.85ms IncrementalHoareTripleChecker+Time [2021-11-05 12:32:05,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 223 Invalid, 29 Unknown, 0 Unchecked, 0.65ms Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 91.85ms Time] [2021-11-05 12:32:05,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-05 12:32:05,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-11-05 12:32:05,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 172 states have (on average 1.2034883720930232) internal successors, (207), 181 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:05,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 207 transitions. [2021-11-05 12:32:05,628 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 207 transitions. Word has length 45 [2021-11-05 12:32:05,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:32:05,628 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 207 transitions. [2021-11-05 12:32:05,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:05,629 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 207 transitions. [2021-11-05 12:32:05,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 12:32:05,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:32:05,629 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] [2021-11-05 12:32:05,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 12:32:05,629 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:32:05,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:32:05,630 INFO L85 PathProgramCache]: Analyzing trace with hash 305433952, now seen corresponding path program 1 times [2021-11-05 12:32:05,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:32:05,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973223673] [2021-11-05 12:32:05,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:05,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:32:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:06,312 INFO 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 12:32:06,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:32:06,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973223673] [2021-11-05 12:32:06,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973223673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:32:06,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:32:06,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:32:06,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599244759] [2021-11-05 12:32:06,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:32:06,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:32:06,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:32:06,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:32:06,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:32:06,313 INFO L87 Difference]: Start difference. First operand 182 states and 207 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:08,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:10,456 WARN L515 Checker$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 12:32:11,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:32:11,163 INFO L93 Difference]: Finished difference Result 484 states and 549 transitions. [2021-11-05 12:32:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:32:11,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-05 12:32:11,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:32:11,165 INFO L225 Difference]: With dead ends: 484 [2021-11-05 12:32:11,165 INFO L226 Difference]: Without dead ends: 344 [2021-11-05 12:32:11,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 542.45ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:32:11,166 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 173 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4325.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.64ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4561.14ms IncrementalHoareTripleChecker+Time [2021-11-05 12:32:11,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 487 Invalid, 89 Unknown, 0 Unchecked, 1.64ms Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 2 Unknown, 0 Unchecked, 4561.14ms Time] [2021-11-05 12:32:11,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-05 12:32:11,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 198. [2021-11-05 12:32:11,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 188 states have (on average 1.196808510638298) internal successors, (225), 197 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 225 transitions. [2021-11-05 12:32:11,175 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 225 transitions. Word has length 45 [2021-11-05 12:32:11,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:32:11,175 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 225 transitions. [2021-11-05 12:32:11,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:11,175 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 225 transitions. [2021-11-05 12:32:11,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 12:32:11,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:32:11,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:32:11,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 12:32:11,176 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:32:11,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:32:11,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1864309569, now seen corresponding path program 1 times [2021-11-05 12:32:11,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:32:11,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325715518] [2021-11-05 12:32:11,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:11,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:32:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:13,894 INFO 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 12:32:13,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:32:13,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325715518] [2021-11-05 12:32:13,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325715518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:32:13,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:32:13,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:32:13,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071728722] [2021-11-05 12:32:13,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:32:13,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:32:13,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:32:13,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:32:13,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:32:13,896 INFO L87 Difference]: Start difference. First operand 198 states and 225 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 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 12:32:15,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:18,067 WARN L515 Checker$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 12:32:20,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:22,305 WARN L515 Checker$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 12:32:24,386 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 12:32:26,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:32:26,802 INFO L93 Difference]: Finished difference Result 420 states and 474 transitions. [2021-11-05 12:32:26,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 12:32:26,803 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 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 12:32:26,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:32:26,804 INFO L225 Difference]: With dead ends: 420 [2021-11-05 12:32:26,804 INFO L226 Difference]: Without dead ends: 235 [2021-11-05 12:32:26,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1366.68ms TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2021-11-05 12:32:26,804 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 110 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 23 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11319.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.00ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11941.69ms IncrementalHoareTripleChecker+Time [2021-11-05 12:32:26,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 832 Invalid, 490 Unknown, 0 Unchecked, 5.00ms Time], IncrementalHoareTripleChecker [23 Valid, 462 Invalid, 5 Unknown, 0 Unchecked, 11941.69ms Time] [2021-11-05 12:32:26,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-05 12:32:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 194. [2021-11-05 12:32:26,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 184 states have (on average 1.1793478260869565) internal successors, (217), 193 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:26,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 217 transitions. [2021-11-05 12:32:26,810 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 217 transitions. Word has length 48 [2021-11-05 12:32:26,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:32:26,810 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 217 transitions. [2021-11-05 12:32:26,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 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 12:32:26,811 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 217 transitions. [2021-11-05 12:32:26,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 12:32:26,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:32:26,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:32:26,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 12:32:26,812 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:32:26,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:32:26,812 INFO L85 PathProgramCache]: Analyzing trace with hash -868262626, now seen corresponding path program 1 times [2021-11-05 12:32:26,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:32:26,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019869609] [2021-11-05 12:32:26,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:26,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:32:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:28,025 INFO 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 12:32:28,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:32:28,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019869609] [2021-11-05 12:32:28,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019869609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:32:28,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:32:28,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:32:28,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015374157] [2021-11-05 12:32:28,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:32:28,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:32:28,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:32:28,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:32:28,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:32:28,026 INFO L87 Difference]: Start difference. First operand 194 states and 217 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 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 12:32:30,070 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 12:32:32,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:34,322 WARN L515 Checker$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 12:32:37,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:32:37,457 INFO L93 Difference]: Finished difference Result 410 states and 451 transitions. [2021-11-05 12:32:37,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 12:32:37,458 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 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 12:32:37,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:32:37,459 INFO L225 Difference]: With dead ends: 410 [2021-11-05 12:32:37,459 INFO L226 Difference]: Without dead ends: 322 [2021-11-05 12:32:37,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2011.84ms TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2021-11-05 12:32:37,460 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 580 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 50 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7400.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.48ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7812.81ms IncrementalHoareTripleChecker+Time [2021-11-05 12:32:37,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 572 Invalid, 449 Unknown, 0 Unchecked, 5.48ms Time], IncrementalHoareTripleChecker [50 Valid, 396 Invalid, 3 Unknown, 0 Unchecked, 7812.81ms Time] [2021-11-05 12:32:37,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-05 12:32:37,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 197. [2021-11-05 12:32:37,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 187 states have (on average 1.1764705882352942) internal successors, (220), 196 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 220 transitions. [2021-11-05 12:32:37,466 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 220 transitions. Word has length 48 [2021-11-05 12:32:37,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:32:37,466 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 220 transitions. [2021-11-05 12:32:37,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 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 12:32:37,466 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 220 transitions. [2021-11-05 12:32:37,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 12:32:37,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:32:37,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:32:37,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 12:32:37,469 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:32:37,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:32:37,469 INFO L85 PathProgramCache]: Analyzing trace with hash 918000232, now seen corresponding path program 1 times [2021-11-05 12:32:37,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:32:37,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657702286] [2021-11-05 12:32:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:37,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:32:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:37,708 INFO 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 12:32:37,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:32:37,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657702286] [2021-11-05 12:32:37,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657702286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:32:37,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:32:37,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:32:37,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824089703] [2021-11-05 12:32:37,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:32:37,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:32:37,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:32:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:32:37,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:32:37,710 INFO L87 Difference]: Start difference. First operand 197 states and 220 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:39,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:41,846 WARN L515 Checker$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 12:32:42,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:32:42,576 INFO L93 Difference]: Finished difference Result 297 states and 322 transitions. [2021-11-05 12:32:42,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:32:42,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-05 12:32:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:32:42,577 INFO L225 Difference]: With dead ends: 297 [2021-11-05 12:32:42,578 INFO L226 Difference]: Without dead ends: 252 [2021-11-05 12:32:42,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 196.68ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:32:42,578 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 101 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4467.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.21ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4718.41ms IncrementalHoareTripleChecker+Time [2021-11-05 12:32:42,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 493 Invalid, 181 Unknown, 0 Unchecked, 2.21ms Time], IncrementalHoareTripleChecker [10 Valid, 169 Invalid, 2 Unknown, 0 Unchecked, 4718.41ms Time] [2021-11-05 12:32:42,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-05 12:32:42,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 215. [2021-11-05 12:32:42,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 205 states have (on average 1.1609756097560975) internal successors, (238), 214 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 238 transitions. [2021-11-05 12:32:42,584 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 238 transitions. Word has length 51 [2021-11-05 12:32:42,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:32:42,584 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 238 transitions. [2021-11-05 12:32:42,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:42,584 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 238 transitions. [2021-11-05 12:32:42,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 12:32:42,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:32:42,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:32:42,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 12:32:42,585 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:32:42,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:32:42,585 INFO L85 PathProgramCache]: Analyzing trace with hash 746971928, now seen corresponding path program 1 times [2021-11-05 12:32:42,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:32:42,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558681051] [2021-11-05 12:32:42,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:42,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:32:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:42,909 INFO 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 12:32:42,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:32:42,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558681051] [2021-11-05 12:32:42,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558681051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:32:42,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:32:42,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:32:42,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864936753] [2021-11-05 12:32:42,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:32:42,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:32:42,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:32:42,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:32:42,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:32:42,910 INFO L87 Difference]: Start difference. First operand 215 states and 238 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:44,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:47,071 WARN L515 Checker$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 12:32:47,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:32:47,636 INFO L93 Difference]: Finished difference Result 252 states and 274 transitions. [2021-11-05 12:32:47,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:32:47,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-05 12:32:47,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:32:47,638 INFO L225 Difference]: With dead ends: 252 [2021-11-05 12:32:47,638 INFO L226 Difference]: Without dead ends: 250 [2021-11-05 12:32:47,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 186.96ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:32:47,638 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 73 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4375.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.01ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4624.93ms IncrementalHoareTripleChecker+Time [2021-11-05 12:32:47,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 560 Invalid, 111 Unknown, 0 Unchecked, 2.01ms Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 2 Unknown, 0 Unchecked, 4624.93ms Time] [2021-11-05 12:32:47,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-05 12:32:47,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 223. [2021-11-05 12:32:47,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 213 states have (on average 1.164319248826291) internal successors, (248), 222 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:47,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 248 transitions. [2021-11-05 12:32:47,646 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 248 transitions. Word has length 51 [2021-11-05 12:32:47,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:32:47,646 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 248 transitions. [2021-11-05 12:32:47,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:47,646 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 248 transitions. [2021-11-05 12:32:47,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 12:32:47,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:32:47,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:32:47,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 12:32:47,647 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:32:47,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:32:47,648 INFO L85 PathProgramCache]: Analyzing trace with hash 747013634, now seen corresponding path program 1 times [2021-11-05 12:32:47,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:32:47,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571819705] [2021-11-05 12:32:47,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:47,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:32:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:47,785 INFO 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 12:32:47,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:32:47,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571819705] [2021-11-05 12:32:47,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571819705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:32:47,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:32:47,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 12:32:47,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183478040] [2021-11-05 12:32:47,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:32:47,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 12:32:47,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:32:47,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 12:32:47,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 12:32:47,787 INFO L87 Difference]: Start difference. First operand 223 states and 248 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:47,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:32:47,831 INFO L93 Difference]: Finished difference Result 240 states and 266 transitions. [2021-11-05 12:32:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 12:32:47,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-05 12:32:47,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:32:47,833 INFO L225 Difference]: With dead ends: 240 [2021-11-05 12:32:47,833 INFO L226 Difference]: Without dead ends: 225 [2021-11-05 12:32:47,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.18ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 12:32:47,834 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.44ms IncrementalHoareTripleChecker+Time [2021-11-05 12:32:47,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 261 Invalid, 6 Unknown, 0 Unchecked, 0.22ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 38.44ms Time] [2021-11-05 12:32:47,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-05 12:32:47,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-11-05 12:32:47,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 215 states have (on average 1.1627906976744187) internal successors, (250), 224 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 250 transitions. [2021-11-05 12:32:47,845 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 250 transitions. Word has length 51 [2021-11-05 12:32:47,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:32:47,845 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 250 transitions. [2021-11-05 12:32:47,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:47,849 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 250 transitions. [2021-11-05 12:32:47,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 12:32:47,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:32:47,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:32:47,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 12:32:47,850 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:32:47,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:32:47,851 INFO L85 PathProgramCache]: Analyzing trace with hash 747073216, now seen corresponding path program 1 times [2021-11-05 12:32:47,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:32:47,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768415359] [2021-11-05 12:32:47,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:47,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:32:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:48,989 INFO 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 12:32:48,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:32:48,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768415359] [2021-11-05 12:32:48,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768415359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:32:48,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:32:48,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:32:48,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695390766] [2021-11-05 12:32:48,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:32:48,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:32:48,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:32:48,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:32:48,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:32:48,991 INFO L87 Difference]: Start difference. First operand 225 states and 250 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:51,032 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:53,184 WARN L515 Checker$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 12:32:55,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:57,366 WARN L515 Checker$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 12:32:59,462 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:01,619 WARN L515 Checker$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 12:33:03,740 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 12:33:05,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:33:05,668 INFO L93 Difference]: Finished difference Result 294 states and 321 transitions. [2021-11-05 12:33:05,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:33:05,669 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-05 12:33:05,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:33:05,670 INFO L225 Difference]: With dead ends: 294 [2021-11-05 12:33:05,670 INFO L226 Difference]: Without dead ends: 292 [2021-11-05 12:33:05,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1320.41ms TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:33:05,671 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 163 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 12 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14928.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.88ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15785.29ms IncrementalHoareTripleChecker+Time [2021-11-05 12:33:05,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 909 Invalid, 321 Unknown, 0 Unchecked, 3.88ms Time], IncrementalHoareTripleChecker [12 Valid, 302 Invalid, 7 Unknown, 0 Unchecked, 15785.29ms Time] [2021-11-05 12:33:05,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-05 12:33:05,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 268. [2021-11-05 12:33:05,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 258 states have (on average 1.1511627906976745) internal successors, (297), 267 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:33:05,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 297 transitions. [2021-11-05 12:33:05,681 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 297 transitions. Word has length 51 [2021-11-05 12:33:05,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:33:05,681 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 297 transitions. [2021-11-05 12:33:05,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:33:05,681 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 297 transitions. [2021-11-05 12:33:05,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 12:33:05,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:33:05,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:33:05,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 12:33:05,682 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:33:05,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:33:05,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1794730536, now seen corresponding path program 1 times [2021-11-05 12:33:05,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:33:05,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563969591] [2021-11-05 12:33:05,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:33:05,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:33:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:33:06,260 INFO 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 12:33:06,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:33:06,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563969591] [2021-11-05 12:33:06,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563969591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:33:06,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:33:06,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:33:06,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418458297] [2021-11-05 12:33:06,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:33:06,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:33:06,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:33:06,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:33:06,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:33:06,262 INFO L87 Difference]: Start difference. First operand 268 states and 297 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:33:08,304 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 12:33:10,441 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 12:33:11,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:33:11,589 INFO L93 Difference]: Finished difference Result 356 states and 387 transitions. [2021-11-05 12:33:11,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:33:11,590 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-05 12:33:11,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:33:11,591 INFO L225 Difference]: With dead ends: 356 [2021-11-05 12:33:11,591 INFO L226 Difference]: Without dead ends: 310 [2021-11-05 12:33:11,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 399.36ms TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:33:11,592 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 171 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4744.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.55ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5051.77ms IncrementalHoareTripleChecker+Time [2021-11-05 12:33:11,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 596 Invalid, 293 Unknown, 0 Unchecked, 1.55ms Time], IncrementalHoareTripleChecker [17 Valid, 274 Invalid, 2 Unknown, 0 Unchecked, 5051.77ms Time] [2021-11-05 12:33:11,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-05 12:33:11,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 272. [2021-11-05 12:33:11,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 262 states have (on average 1.1488549618320612) internal successors, (301), 271 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 12:33:11,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 301 transitions. [2021-11-05 12:33:11,601 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 301 transitions. Word has length 51 [2021-11-05 12:33:11,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:33:11,601 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 301 transitions. [2021-11-05 12:33:11,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:33:11,601 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 301 transitions. [2021-11-05 12:33:11,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 12:33:11,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:33:11,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:33:11,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 12:33:11,602 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:33:11,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:33:11,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1623702232, now seen corresponding path program 1 times [2021-11-05 12:33:11,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:33:11,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822212492] [2021-11-05 12:33:11,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:33:11,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:33:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:33:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:33:12,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:33:12,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822212492] [2021-11-05 12:33:12,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822212492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:33:12,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:33:12,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:33:12,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800234482] [2021-11-05 12:33:12,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:33:12,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:33:12,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:33:12,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:33:12,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:33:12,938 INFO L87 Difference]: Start difference. First operand 272 states and 301 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:33:14,984 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 12:33:17,100 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:19,206 WARN L515 Checker$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 12:33:21,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:23,427 WARN L515 Checker$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 12:33:25,589 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 12:33:28,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:33:28,653 INFO L93 Difference]: Finished difference Result 399 states and 431 transitions. [2021-11-05 12:33:28,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 12:33:28,653 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-05 12:33:28,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:33:28,655 INFO L225 Difference]: With dead ends: 399 [2021-11-05 12:33:28,655 INFO L226 Difference]: Without dead ends: 383 [2021-11-05 12:33:28,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1936.72ms TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2021-11-05 12:33:28,655 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 316 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 50 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13518.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.68ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14266.06ms IncrementalHoareTripleChecker+Time [2021-11-05 12:33:28,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 1033 Invalid, 576 Unknown, 0 Unchecked, 5.68ms Time], IncrementalHoareTripleChecker [50 Valid, 520 Invalid, 6 Unknown, 0 Unchecked, 14266.06ms Time] [2021-11-05 12:33:28,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-05 12:33:28,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 334. [2021-11-05 12:33:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 324 states have (on average 1.1203703703703705) internal successors, (363), 333 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 12:33:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 363 transitions. [2021-11-05 12:33:28,680 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 363 transitions. Word has length 51 [2021-11-05 12:33:28,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:33:28,680 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 363 transitions. [2021-11-05 12:33:28,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:33:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 363 transitions. [2021-11-05 12:33:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 12:33:28,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:33:28,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:33:28,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 12:33:28,682 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:33:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:33:28,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1623761814, now seen corresponding path program 1 times [2021-11-05 12:33:28,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:33:28,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001139061] [2021-11-05 12:33:28,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:33:28,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:33:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:33:30,605 INFO 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 12:33:30,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:33:30,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001139061] [2021-11-05 12:33:30,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001139061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:33:30,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:33:30,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-05 12:33:30,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310113482] [2021-11-05 12:33:30,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:33:30,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-05 12:33:30,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:33:30,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-05 12:33:30,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-11-05 12:33:30,607 INFO L87 Difference]: Start difference. First operand 334 states and 363 transitions. Second operand has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:33:32,648 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 12:33:34,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:36,832 WARN L515 Checker$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 12:33:38,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:41,048 WARN L515 Checker$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 12:33:43,175 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:45,296 WARN L515 Checker$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 12:33:50,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:33:50,073 INFO L93 Difference]: Finished difference Result 408 states and 436 transitions. [2021-11-05 12:33:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-05 12:33:50,074 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-05 12:33:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:33:50,075 INFO L225 Difference]: With dead ends: 408 [2021-11-05 12:33:50,075 INFO L226 Difference]: Without dead ends: 395 [2021-11-05 12:33:50,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 3244.01ms TimeCoverageRelationStatistics Valid=289, Invalid=1271, Unknown=0, NotChecked=0, Total=1560 [2021-11-05 12:33:50,076 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 427 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 73 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16216.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.83ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17100.52ms IncrementalHoareTripleChecker+Time [2021-11-05 12:33:50,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 1569 Invalid, 883 Unknown, 0 Unchecked, 8.83ms Time], IncrementalHoareTripleChecker [73 Valid, 803 Invalid, 7 Unknown, 0 Unchecked, 17100.52ms Time] [2021-11-05 12:33:50,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-05 12:33:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 335. [2021-11-05 12:33:50,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 325 states have (on average 1.12) internal successors, (364), 334 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 12:33:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 364 transitions. [2021-11-05 12:33:50,088 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 364 transitions. Word has length 51 [2021-11-05 12:33:50,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:33:50,088 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 364 transitions. [2021-11-05 12:33:50,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:33:50,088 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 364 transitions. [2021-11-05 12:33:50,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 12:33:50,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:33:50,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:33:50,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-05 12:33:50,089 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:33:50,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:33:50,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1623803520, now seen corresponding path program 1 times [2021-11-05 12:33:50,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:33:50,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417384698] [2021-11-05 12:33:50,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:33:50,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:33:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:33:53,102 INFO 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 12:33:53,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:33:53,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417384698] [2021-11-05 12:33:53,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417384698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:33:53,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:33:53,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:33:53,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132634782] [2021-11-05 12:33:53,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:33:53,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:33:53,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:33:53,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:33:53,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:33:53,103 INFO L87 Difference]: Start difference. First operand 335 states and 364 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:33:55,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:57,267 WARN L515 Checker$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 12:33:59,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:01,492 WARN L515 Checker$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 12:34:03,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:05,705 WARN L515 Checker$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 12:34:07,821 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:09,959 WARN L515 Checker$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 12:34:12,075 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 12:34:14,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:34:14,380 INFO L93 Difference]: Finished difference Result 482 states and 525 transitions. [2021-11-05 12:34:14,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 12:34:14,381 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-05 12:34:14,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:34:14,382 INFO L225 Difference]: With dead ends: 482 [2021-11-05 12:34:14,382 INFO L226 Difference]: Without dead ends: 480 [2021-11-05 12:34:14,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1163.64ms TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:34:14,383 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 313 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 17 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19440.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.38ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20535.77ms IncrementalHoareTripleChecker+Time [2021-11-05 12:34:14,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 1445 Invalid, 535 Unknown, 0 Unchecked, 6.38ms Time], IncrementalHoareTripleChecker [17 Valid, 509 Invalid, 9 Unknown, 0 Unchecked, 20535.77ms Time] [2021-11-05 12:34:14,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-05 12:34:14,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 413. [2021-11-05 12:34:14,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 403 states have (on average 1.1364764267990075) internal successors, (458), 412 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:14,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 458 transitions. [2021-11-05 12:34:14,402 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 458 transitions. Word has length 51 [2021-11-05 12:34:14,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:34:14,402 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 458 transitions. [2021-11-05 12:34:14,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:14,404 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 458 transitions. [2021-11-05 12:34:14,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 12:34:14,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:34:14,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:34:14,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-05 12:34:14,405 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:34:14,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:34:14,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2130308031, now seen corresponding path program 1 times [2021-11-05 12:34:14,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:34:14,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101881111] [2021-11-05 12:34:14,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:34:14,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:34:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:34:14,953 INFO 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 12:34:14,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:34:14,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101881111] [2021-11-05 12:34:14,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101881111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:34:14,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:34:14,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:34:14,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455973276] [2021-11-05 12:34:14,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:34:14,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:34:14,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:34:14,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:34:14,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:34:14,956 INFO L87 Difference]: Start difference. First operand 413 states and 458 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:16,999 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 12:34:19,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:21,193 WARN L515 Checker$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 12:34:23,340 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 12:34:24,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:34:24,998 INFO L93 Difference]: Finished difference Result 540 states and 584 transitions. [2021-11-05 12:34:24,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:34:24,999 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-05 12:34:24,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:34:25,000 INFO L225 Difference]: With dead ends: 540 [2021-11-05 12:34:25,000 INFO L226 Difference]: Without dead ends: 383 [2021-11-05 12:34:25,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 619.78ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:34:25,001 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 268 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 9 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9141.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.15ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9615.27ms IncrementalHoareTripleChecker+Time [2021-11-05 12:34:25,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 1030 Invalid, 453 Unknown, 0 Unchecked, 5.15ms Time], IncrementalHoareTripleChecker [9 Valid, 440 Invalid, 4 Unknown, 0 Unchecked, 9615.27ms Time] [2021-11-05 12:34:25,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-05 12:34:25,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 332. [2021-11-05 12:34:25,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 322 states have (on average 1.1180124223602483) internal successors, (360), 331 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:25,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 360 transitions. [2021-11-05 12:34:25,013 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 360 transitions. Word has length 51 [2021-11-05 12:34:25,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:34:25,013 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 360 transitions. [2021-11-05 12:34:25,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:25,013 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 360 transitions. [2021-11-05 12:34:25,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 12:34:25,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:34:25,014 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] [2021-11-05 12:34:25,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-05 12:34:25,014 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:34:25,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:34:25,015 INFO L85 PathProgramCache]: Analyzing trace with hash 580617946, now seen corresponding path program 1 times [2021-11-05 12:34:25,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:34:25,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760388011] [2021-11-05 12:34:25,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:34:25,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:34:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:34:25,322 INFO 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 12:34:25,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:34:25,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760388011] [2021-11-05 12:34:25,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760388011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:34:25,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:34:25,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:34:25,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101096283] [2021-11-05 12:34:25,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:34:25,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:34:25,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:34:25,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:34:25,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:34:25,324 INFO L87 Difference]: Start difference. First operand 332 states and 360 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:27,371 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 12:34:29,487 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 12:34:30,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:34:30,118 INFO L93 Difference]: Finished difference Result 360 states and 385 transitions. [2021-11-05 12:34:30,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:34:30,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 12:34:30,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:34:30,119 INFO L225 Difference]: With dead ends: 360 [2021-11-05 12:34:30,119 INFO L226 Difference]: Without dead ends: 358 [2021-11-05 12:34:30,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 153.32ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:34:30,120 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 69 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4453.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4705.90ms IncrementalHoareTripleChecker+Time [2021-11-05 12:34:30,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 527 Invalid, 144 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 2 Unknown, 0 Unchecked, 4705.90ms Time] [2021-11-05 12:34:30,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-05 12:34:30,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 334. [2021-11-05 12:34:30,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 324 states have (on average 1.117283950617284) internal successors, (362), 333 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:30,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 362 transitions. [2021-11-05 12:34:30,155 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 362 transitions. Word has length 53 [2021-11-05 12:34:30,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:34:30,155 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 362 transitions. [2021-11-05 12:34:30,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:30,155 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 362 transitions. [2021-11-05 12:34:30,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 12:34:30,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:34:30,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:34:30,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-05 12:34:30,156 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:34:30,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:34:30,157 INFO L85 PathProgramCache]: Analyzing trace with hash 677957058, now seen corresponding path program 1 times [2021-11-05 12:34:30,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:34:30,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751201397] [2021-11-05 12:34:30,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:34:30,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:34:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:34:30,848 INFO 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 12:34:30,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:34:30,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751201397] [2021-11-05 12:34:30,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751201397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:34:30,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:34:30,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:34:30,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744267299] [2021-11-05 12:34:30,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:34:30,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:34:30,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:34:30,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:34:30,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:34:30,850 INFO L87 Difference]: Start difference. First operand 334 states and 362 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:32,893 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 12:34:35,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:37,134 WARN L515 Checker$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 12:34:38,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:34:38,441 INFO L93 Difference]: Finished difference Result 396 states and 424 transitions. [2021-11-05 12:34:38,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:34:38,441 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 12:34:38,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:34:38,442 INFO L225 Difference]: With dead ends: 396 [2021-11-05 12:34:38,442 INFO L226 Difference]: Without dead ends: 369 [2021-11-05 12:34:38,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 656.18ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:34:38,443 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 167 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 22 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6744.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.41ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7179.08ms IncrementalHoareTripleChecker+Time [2021-11-05 12:34:38,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 617 Invalid, 274 Unknown, 0 Unchecked, 3.41ms Time], IncrementalHoareTripleChecker [22 Valid, 249 Invalid, 3 Unknown, 0 Unchecked, 7179.08ms Time] [2021-11-05 12:34:38,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-11-05 12:34:38,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 334. [2021-11-05 12:34:38,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 324 states have (on average 1.1141975308641976) internal successors, (361), 333 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:38,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 361 transitions. [2021-11-05 12:34:38,455 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 361 transitions. Word has length 53 [2021-11-05 12:34:38,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:34:38,456 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 361 transitions. [2021-11-05 12:34:38,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:38,456 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 361 transitions. [2021-11-05 12:34:38,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 12:34:38,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:34:38,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:34:38,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-05 12:34:38,457 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:34:38,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:34:38,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1379556932, now seen corresponding path program 1 times [2021-11-05 12:34:38,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:34:38,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711232747] [2021-11-05 12:34:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:34:38,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:34:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:34:39,719 INFO 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 12:34:39,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:34:39,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711232747] [2021-11-05 12:34:39,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711232747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:34:39,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:34:39,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:34:39,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372129332] [2021-11-05 12:34:39,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:34:39,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:34:39,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:34:39,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:34:39,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:34:39,720 INFO L87 Difference]: Start difference. First operand 334 states and 361 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:41,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:43,892 WARN L515 Checker$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 12:34:45,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:48,112 WARN L515 Checker$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 12:34:50,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:52,361 WARN L515 Checker$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 12:34:54,493 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 12:34:57,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:34:57,574 INFO L93 Difference]: Finished difference Result 360 states and 386 transitions. [2021-11-05 12:34:57,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 12:34:57,575 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 12:34:57,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:34:57,575 INFO L225 Difference]: With dead ends: 360 [2021-11-05 12:34:57,576 INFO L226 Difference]: Without dead ends: 344 [2021-11-05 12:34:57,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1882.44ms TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2021-11-05 12:34:57,576 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 237 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 30 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15635.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.68ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16543.54ms IncrementalHoareTripleChecker+Time [2021-11-05 12:34:57,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 1076 Invalid, 574 Unknown, 0 Unchecked, 5.68ms Time], IncrementalHoareTripleChecker [30 Valid, 537 Invalid, 7 Unknown, 0 Unchecked, 16543.54ms Time] [2021-11-05 12:34:57,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-05 12:34:57,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 293. [2021-11-05 12:34:57,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 283 states have (on average 1.1201413427561837) internal successors, (317), 292 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:57,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 317 transitions. [2021-11-05 12:34:57,587 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 317 transitions. Word has length 53 [2021-11-05 12:34:57,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:34:57,587 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 317 transitions. [2021-11-05 12:34:57,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:57,588 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 317 transitions. [2021-11-05 12:34:57,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 12:34:57,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:34:57,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:34:57,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-05 12:34:57,590 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:34:57,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:34:57,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1402189186, now seen corresponding path program 1 times [2021-11-05 12:34:57,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:34:57,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573230126] [2021-11-05 12:34:57,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:34:57,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:34:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:35:00,818 INFO 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 12:35:00,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:35:00,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573230126] [2021-11-05 12:35:00,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573230126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:35:00,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:35:00,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:35:00,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360299095] [2021-11-05 12:35:00,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:35:00,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:35:00,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:35:00,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:35:00,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:35:00,827 INFO L87 Difference]: Start difference. First operand 293 states and 317 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:35:02,922 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 12:35:05,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:07,148 WARN L515 Checker$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 12:35:09,297 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 12:35:11,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:35:11,584 INFO L93 Difference]: Finished difference Result 383 states and 407 transitions. [2021-11-05 12:35:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:35:11,584 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 12:35:11,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:35:11,585 INFO L225 Difference]: With dead ends: 383 [2021-11-05 12:35:11,585 INFO L226 Difference]: Without dead ends: 381 [2021-11-05 12:35:11,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1468.05ms TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-11-05 12:35:11,586 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 412 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 17 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9325.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.82ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9884.18ms IncrementalHoareTripleChecker+Time [2021-11-05 12:35:11,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 1250 Invalid, 457 Unknown, 0 Unchecked, 4.82ms Time], IncrementalHoareTripleChecker [17 Valid, 436 Invalid, 4 Unknown, 0 Unchecked, 9884.18ms Time] [2021-11-05 12:35:11,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-05 12:35:11,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 296. [2021-11-05 12:35:11,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 286 states have (on average 1.1223776223776223) internal successors, (321), 295 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:35:11,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 321 transitions. [2021-11-05 12:35:11,597 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 321 transitions. Word has length 53 [2021-11-05 12:35:11,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:35:11,598 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 321 transitions. [2021-11-05 12:35:11,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:35:11,598 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 321 transitions. [2021-11-05 12:35:11,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-05 12:35:11,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:35:11,599 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] [2021-11-05 12:35:11,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-05 12:35:11,599 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:35:11,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:35:11,599 INFO L85 PathProgramCache]: Analyzing trace with hash -928229713, now seen corresponding path program 1 times [2021-11-05 12:35:11,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:35:11,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91080092] [2021-11-05 12:35:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:35:11,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:35:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:35:15,684 INFO 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 12:35:15,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:35:15,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91080092] [2021-11-05 12:35:15,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91080092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:35:15,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:35:15,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 12:35:15,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035157864] [2021-11-05 12:35:15,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:35:15,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 12:35:15,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:35:15,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 12:35:15,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:35:15,686 INFO L87 Difference]: Start difference. First operand 296 states and 321 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:35:17,730 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 12:35:19,832 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:21,927 WARN L515 Checker$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 12:35:24,014 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:26,113 WARN L515 Checker$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 12:35:28,298 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:30,393 WARN L515 Checker$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 12:35:32,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:34,621 WARN L515 Checker$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 12:35:40,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:35:40,902 INFO L93 Difference]: Finished difference Result 548 states and 579 transitions. [2021-11-05 12:35:40,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-05 12:35:40,903 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-05 12:35:40,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:35:40,904 INFO L225 Difference]: With dead ends: 548 [2021-11-05 12:35:40,904 INFO L226 Difference]: Without dead ends: 432 [2021-11-05 12:35:40,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 4571.60ms TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2021-11-05 12:35:40,905 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 500 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 62 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20352.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.09ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21444.36ms IncrementalHoareTripleChecker+Time [2021-11-05 12:35:40,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 1658 Invalid, 937 Unknown, 0 Unchecked, 10.09ms Time], IncrementalHoareTripleChecker [62 Valid, 866 Invalid, 9 Unknown, 0 Unchecked, 21444.36ms Time] [2021-11-05 12:35:40,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-05 12:35:40,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 296. [2021-11-05 12:35:40,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 286 states have (on average 1.1153846153846154) internal successors, (319), 295 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:35:40,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 319 transitions. [2021-11-05 12:35:40,916 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 319 transitions. Word has length 54 [2021-11-05 12:35:40,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:35:40,917 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 319 transitions. [2021-11-05 12:35:40,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:35:40,917 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 319 transitions. [2021-11-05 12:35:40,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-05 12:35:40,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:35:40,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:35:40,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-05 12:35:40,918 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:35:40,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:35:40,918 INFO L85 PathProgramCache]: Analyzing trace with hash -248171343, now seen corresponding path program 1 times [2021-11-05 12:35:40,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:35:40,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011310779] [2021-11-05 12:35:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:35:40,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:35:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:35:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:35:41,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:35:41,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011310779] [2021-11-05 12:35:41,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011310779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:35:41,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:35:41,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:35:41,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018462548] [2021-11-05 12:35:41,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:35:41,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:35:41,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:35:41,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:35:41,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:35:41,182 INFO L87 Difference]: Start difference. First operand 296 states and 319 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:35:43,226 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 12:35:43,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:35:43,752 INFO L93 Difference]: Finished difference Result 408 states and 441 transitions. [2021-11-05 12:35:43,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:35:43,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-05 12:35:43,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:35:43,754 INFO L225 Difference]: With dead ends: 408 [2021-11-05 12:35:43,754 INFO L226 Difference]: Without dead ends: 288 [2021-11-05 12:35:43,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.56ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:35:43,758 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 37 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2374.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.12ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2517.84ms IncrementalHoareTripleChecker+Time [2021-11-05 12:35:43,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 234 Invalid, 124 Unknown, 0 Unchecked, 1.12ms Time], IncrementalHoareTripleChecker [15 Valid, 108 Invalid, 1 Unknown, 0 Unchecked, 2517.84ms Time] [2021-11-05 12:35:43,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-05 12:35:43,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-11-05 12:35:43,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 278 states have (on average 1.10431654676259) internal successors, (307), 287 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:35:43,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 307 transitions. [2021-11-05 12:35:43,771 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 307 transitions. Word has length 54 [2021-11-05 12:35:43,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:35:43,771 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 307 transitions. [2021-11-05 12:35:43,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:35:43,772 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 307 transitions. [2021-11-05 12:35:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 12:35:43,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:35:43,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:35:43,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-05 12:35:43,788 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:35:43,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:35:43,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1115787996, now seen corresponding path program 1 times [2021-11-05 12:35:43,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:35:43,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887801547] [2021-11-05 12:35:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:35:43,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:35:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:35:48,505 INFO 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 12:35:48,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:35:48,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887801547] [2021-11-05 12:35:48,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887801547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:35:48,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:35:48,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-05 12:35:48,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510004361] [2021-11-05 12:35:48,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:35:48,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-05 12:35:48,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:35:48,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-05 12:35:48,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:35:48,507 INFO L87 Difference]: Start difference. First operand 288 states and 307 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:35:50,549 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 12:35:52,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:54,771 WARN L515 Checker$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 12:35:56,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:58,992 WARN L515 Checker$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 12:36:01,083 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:03,199 WARN L515 Checker$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 12:36:05,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:07,407 WARN L515 Checker$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 12:36:11,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:36:11,268 INFO L93 Difference]: Finished difference Result 390 states and 409 transitions. [2021-11-05 12:36:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-05 12:36:11,269 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-05 12:36:11,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:36:11,270 INFO L225 Difference]: With dead ends: 390 [2021-11-05 12:36:11,270 INFO L226 Difference]: Without dead ends: 388 [2021-11-05 12:36:11,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2643.71ms TimeCoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2021-11-05 12:36:11,270 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 186 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 27 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20321.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.76ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21385.17ms IncrementalHoareTripleChecker+Time [2021-11-05 12:36:11,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 1800 Invalid, 805 Unknown, 0 Unchecked, 8.76ms Time], IncrementalHoareTripleChecker [27 Valid, 769 Invalid, 9 Unknown, 0 Unchecked, 21385.17ms Time] [2021-11-05 12:36:11,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-11-05 12:36:11,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 334. [2021-11-05 12:36:11,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 324 states have (on average 1.095679012345679) internal successors, (355), 333 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:36:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 355 transitions. [2021-11-05 12:36:11,285 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 355 transitions. Word has length 55 [2021-11-05 12:36:11,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:36:11,285 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 355 transitions. [2021-11-05 12:36:11,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:36:11,285 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 355 transitions. [2021-11-05 12:36:11,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 12:36:11,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:36:11,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:36:11,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-05 12:36:11,286 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:36:11,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:36:11,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1758616887, now seen corresponding path program 1 times [2021-11-05 12:36:11,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:36:11,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595634838] [2021-11-05 12:36:11,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:36:11,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:36:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:36:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:36:12,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:36:12,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595634838] [2021-11-05 12:36:12,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595634838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:36:12,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:36:12,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:36:12,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539381253] [2021-11-05 12:36:12,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:36:12,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:36:12,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:36:12,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:36:12,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:36:12,513 INFO L87 Difference]: Start difference. First operand 334 states and 355 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:36:14,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:16,710 WARN L515 Checker$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 12:36:18,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:20,918 WARN L515 Checker$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 12:36:23,035 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 12:36:25,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:36:25,970 INFO L93 Difference]: Finished difference Result 473 states and 501 transitions. [2021-11-05 12:36:25,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-05 12:36:25,971 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-05 12:36:25,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:36:25,972 INFO L225 Difference]: With dead ends: 473 [2021-11-05 12:36:25,972 INFO L226 Difference]: Without dead ends: 351 [2021-11-05 12:36:25,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1761.65ms TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2021-11-05 12:36:25,973 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 294 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 47 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11435.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.56ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12122.63ms IncrementalHoareTripleChecker+Time [2021-11-05 12:36:25,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 799 Invalid, 452 Unknown, 0 Unchecked, 5.56ms Time], IncrementalHoareTripleChecker [47 Valid, 400 Invalid, 5 Unknown, 0 Unchecked, 12122.63ms Time] [2021-11-05 12:36:25,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-11-05 12:36:25,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 320. [2021-11-05 12:36:25,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 310 states have (on average 1.0903225806451613) internal successors, (338), 319 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 12:36:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 338 transitions. [2021-11-05 12:36:25,986 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 338 transitions. Word has length 55 [2021-11-05 12:36:25,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:36:25,987 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 338 transitions. [2021-11-05 12:36:25,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:36:25,987 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 338 transitions. [2021-11-05 12:36:25,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-05 12:36:25,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:36:25,987 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] [2021-11-05 12:36:25,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-05 12:36:25,988 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:36:25,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:36:25,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1632186344, now seen corresponding path program 1 times [2021-11-05 12:36:25,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:36:25,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077010450] [2021-11-05 12:36:25,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:36:25,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:36:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:36:26,743 INFO 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 12:36:26,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:36:26,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077010450] [2021-11-05 12:36:26,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077010450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:36:26,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:36:26,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:36:26,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385072442] [2021-11-05 12:36:26,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:36:26,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:36:26,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:36:26,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:36:26,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:36:26,745 INFO L87 Difference]: Start difference. First operand 320 states and 338 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 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 12:36:28,790 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 12:36:30,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:33,028 WARN L515 Checker$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 12:36:36,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:36:36,503 INFO L93 Difference]: Finished difference Result 416 states and 436 transitions. [2021-11-05 12:36:36,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-05 12:36:36,503 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 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 12:36:36,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:36:36,505 INFO L225 Difference]: With dead ends: 416 [2021-11-05 12:36:36,505 INFO L226 Difference]: Without dead ends: 410 [2021-11-05 12:36:36,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1550.78ms TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2021-11-05 12:36:36,505 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 206 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 109 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8013.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.34ms SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8502.26ms IncrementalHoareTripleChecker+Time [2021-11-05 12:36:36,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 818 Invalid, 803 Unknown, 0 Unchecked, 7.34ms Time], IncrementalHoareTripleChecker [109 Valid, 691 Invalid, 3 Unknown, 0 Unchecked, 8502.26ms Time] [2021-11-05 12:36:36,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-05 12:36:36,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 316. [2021-11-05 12:36:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 307 states have (on average 1.0846905537459284) internal successors, (333), 315 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 12:36:36,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 333 transitions. [2021-11-05 12:36:36,522 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 333 transitions. Word has length 56 [2021-11-05 12:36:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:36:36,522 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 333 transitions. [2021-11-05 12:36:36,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 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 12:36:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 333 transitions. [2021-11-05 12:36:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 12:36:36,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:36:36,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:36:36,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-05 12:36:36,524 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:36:36,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:36:36,524 INFO L85 PathProgramCache]: Analyzing trace with hash -787246305, now seen corresponding path program 1 times [2021-11-05 12:36:36,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:36:36,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397113640] [2021-11-05 12:36:36,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:36:36,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:36:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:36:37,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:36:37,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:36:37,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397113640] [2021-11-05 12:36:37,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397113640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:36:37,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:36:37,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:36:37,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055329729] [2021-11-05 12:36:37,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:36:37,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:36:37,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:36:37,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:36:37,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:36:37,579 INFO L87 Difference]: Start difference. First operand 316 states and 333 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:36:39,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:41,757 WARN L515 Checker$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 12:36:43,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:45,968 WARN L515 Checker$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 12:36:48,095 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 12:36:49,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:36:49,215 INFO L93 Difference]: Finished difference Result 375 states and 391 transitions. [2021-11-05 12:36:49,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:36:49,215 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-05 12:36:49,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:36:49,216 INFO L225 Difference]: With dead ends: 375 [2021-11-05 12:36:49,216 INFO L226 Difference]: Without dead ends: 316 [2021-11-05 12:36:49,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 917.75ms TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:36:49,217 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 126 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 9 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10560.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.03ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11145.86ms IncrementalHoareTripleChecker+Time [2021-11-05 12:36:49,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 757 Invalid, 185 Unknown, 0 Unchecked, 2.03ms Time], IncrementalHoareTripleChecker [9 Valid, 171 Invalid, 5 Unknown, 0 Unchecked, 11145.86ms Time] [2021-11-05 12:36:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-05 12:36:49,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2021-11-05 12:36:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 307 states have (on average 1.0781758957654723) internal successors, (331), 315 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 12:36:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 331 transitions. [2021-11-05 12:36:49,230 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 331 transitions. Word has length 57 [2021-11-05 12:36:49,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:36:49,231 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 331 transitions. [2021-11-05 12:36:49,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:36:49,231 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 331 transitions. [2021-11-05 12:36:49,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 12:36:49,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:36:49,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:36:49,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-05 12:36:49,232 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:36:49,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:36:49,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1469695334, now seen corresponding path program 1 times [2021-11-05 12:36:49,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:36:49,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320899859] [2021-11-05 12:36:49,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:36:49,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:36:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:36:52,564 INFO 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 12:36:52,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:36:52,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320899859] [2021-11-05 12:36:52,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320899859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:36:52,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:36:52,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:36:52,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125718904] [2021-11-05 12:36:52,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:36:52,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:36:52,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:36:52,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:36:52,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:36:52,566 INFO L87 Difference]: Start difference. First operand 316 states and 331 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:36:54,612 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 12:36:56,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:58,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:00,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:03,059 WARN L515 Checker$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 12:37:05,153 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 12:37:07,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:07,329 INFO L93 Difference]: Finished difference Result 336 states and 349 transitions. [2021-11-05 12:37:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 12:37:07,330 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-05 12:37:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:07,331 INFO L225 Difference]: With dead ends: 336 [2021-11-05 12:37:07,331 INFO L226 Difference]: Without dead ends: 282 [2021-11-05 12:37:07,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1537.99ms TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-11-05 12:37:07,332 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 315 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 38 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13125.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.53ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13857.49ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:07,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 675 Invalid, 399 Unknown, 0 Unchecked, 4.53ms Time], IncrementalHoareTripleChecker [38 Valid, 355 Invalid, 6 Unknown, 0 Unchecked, 13857.49ms Time] [2021-11-05 12:37:07,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-05 12:37:07,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 270. [2021-11-05 12:37:07,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 261 states have (on average 1.0881226053639848) internal successors, (284), 269 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 284 transitions. [2021-11-05 12:37:07,343 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 284 transitions. Word has length 57 [2021-11-05 12:37:07,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:07,343 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 284 transitions. [2021-11-05 12:37:07,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:07,344 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 284 transitions. [2021-11-05 12:37:07,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-05 12:37:07,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:07,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:37:07,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-05 12:37:07,344 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:37:07,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:07,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1632577378, now seen corresponding path program 1 times [2021-11-05 12:37:07,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:07,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458344404] [2021-11-05 12:37:07,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:07,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:12,361 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 12:37:12,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:12,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458344404] [2021-11-05 12:37:12,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458344404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:12,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:12,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 12:37:12,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241078458] [2021-11-05 12:37:12,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:12,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 12:37:12,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:12,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 12:37:12,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:37:12,362 INFO L87 Difference]: Start difference. First operand 270 states and 284 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:14,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:16,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:18,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:20,777 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:22,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:25,011 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:27,107 WARN L515 Checker$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 12:37:29,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:31,371 WARN L515 Checker$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 12:37:33,472 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 12:37:36,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:36,617 INFO L93 Difference]: Finished difference Result 272 states and 285 transitions. [2021-11-05 12:37:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:37:36,618 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-05 12:37:36,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:36,619 INFO L225 Difference]: With dead ends: 272 [2021-11-05 12:37:36,619 INFO L226 Difference]: Without dead ends: 240 [2021-11-05 12:37:36,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2856.81ms TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-11-05 12:37:36,619 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 192 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 31 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21749.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.39ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22927.13ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:36,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 1182 Invalid, 551 Unknown, 0 Unchecked, 5.39ms Time], IncrementalHoareTripleChecker [31 Valid, 510 Invalid, 10 Unknown, 0 Unchecked, 22927.13ms Time] [2021-11-05 12:37:36,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-05 12:37:36,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-11-05 12:37:36,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 231 states have (on average 1.0952380952380953) internal successors, (253), 239 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:36,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 253 transitions. [2021-11-05 12:37:36,629 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 253 transitions. Word has length 58 [2021-11-05 12:37:36,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:36,629 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 253 transitions. [2021-11-05 12:37:36,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:36,629 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 253 transitions. [2021-11-05 12:37:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-05 12:37:36,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:36,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:37:36,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-05 12:37:36,630 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:37:36,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:36,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1013008931, now seen corresponding path program 1 times [2021-11-05 12:37:36,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:36,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914262047] [2021-11-05 12:37:36,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:36,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:38,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:38,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914262047] [2021-11-05 12:37:38,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914262047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:38,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:38,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:37:38,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123468061] [2021-11-05 12:37:38,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:38,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:37:38,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:38,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:37:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:37:38,447 INFO L87 Difference]: Start difference. First operand 240 states and 253 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:40,495 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 12:37:42,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:44,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:46,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:48,933 WARN L515 Checker$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 12:37:51,020 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 12:37:54,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:54,130 INFO L93 Difference]: Finished difference Result 250 states and 262 transitions. [2021-11-05 12:37:54,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:37:54,130 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-05 12:37:54,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:54,131 INFO L225 Difference]: With dead ends: 250 [2021-11-05 12:37:54,131 INFO L226 Difference]: Without dead ends: 175 [2021-11-05 12:37:54,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2731.04ms TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2021-11-05 12:37:54,132 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 157 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 25 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13038.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.09ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13740.61ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:54,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 801 Invalid, 376 Unknown, 0 Unchecked, 4.09ms Time], IncrementalHoareTripleChecker [25 Valid, 345 Invalid, 6 Unknown, 0 Unchecked, 13740.61ms Time] [2021-11-05 12:37:54,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-05 12:37:54,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-11-05 12:37:54,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 166 states have (on average 1.1204819277108433) internal successors, (186), 174 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:54,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 186 transitions. [2021-11-05 12:37:54,137 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 186 transitions. Word has length 60 [2021-11-05 12:37:54,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:54,138 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 186 transitions. [2021-11-05 12:37:54,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:54,138 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 186 transitions. [2021-11-05 12:37:54,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-05 12:37:54,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:54,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:37:54,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-05 12:37:54,138 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:37:54,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:54,139 INFO L85 PathProgramCache]: Analyzing trace with hash -857306152, now seen corresponding path program 1 times [2021-11-05 12:37:54,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:54,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537250970] [2021-11-05 12:37:54,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:54,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:57,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:57,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537250970] [2021-11-05 12:37:57,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537250970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:57,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:57,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:37:57,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766443749] [2021-11-05 12:37:57,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:57,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:37:57,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:57,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:37:57,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:37:57,151 INFO L87 Difference]: Start difference. First operand 175 states and 186 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:59,196 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:01,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:03,403 WARN L515 Checker$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 12:38:05,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:07,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:12,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:38:12,736 INFO L93 Difference]: Finished difference Result 230 states and 243 transitions. [2021-11-05 12:38:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-05 12:38:12,737 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-05 12:38:12,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:38:12,737 INFO L225 Difference]: With dead ends: 230 [2021-11-05 12:38:12,737 INFO L226 Difference]: Without dead ends: 172 [2021-11-05 12:38:12,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 4136.21ms TimeCoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2021-11-05 12:38:12,738 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 372 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 58 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11353.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.30ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12048.76ms IncrementalHoareTripleChecker+Time [2021-11-05 12:38:12,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 742 Invalid, 534 Unknown, 0 Unchecked, 5.30ms Time], IncrementalHoareTripleChecker [58 Valid, 471 Invalid, 5 Unknown, 0 Unchecked, 12048.76ms Time] [2021-11-05 12:38:12,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-05 12:38:12,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2021-11-05 12:38:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 160 states have (on average 1.1125) internal successors, (178), 167 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 178 transitions. [2021-11-05 12:38:12,744 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 178 transitions. Word has length 61 [2021-11-05 12:38:12,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:38:12,744 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 178 transitions. [2021-11-05 12:38:12,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:12,744 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 178 transitions. [2021-11-05 12:38:12,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-05 12:38:12,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:38:12,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:38:12,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-05 12:38:12,745 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:38:12,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:38:12,745 INFO L85 PathProgramCache]: Analyzing trace with hash 171837296, now seen corresponding path program 1 times [2021-11-05 12:38:12,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:38:12,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134008881] [2021-11-05 12:38:12,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:38:12,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:38:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:38:13,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:38:13,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:38:13,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134008881] [2021-11-05 12:38:13,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134008881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:38:13,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:38:13,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:38:13,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679398009] [2021-11-05 12:38:13,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:38:13,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:38:13,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:38:13,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:38:13,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:38:13,944 INFO L87 Difference]: Start difference. First operand 168 states and 178 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:15,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:18,107 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:20,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:22,324 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:24,425 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 12:38:27,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:38:27,154 INFO L93 Difference]: Finished difference Result 307 states and 317 transitions. [2021-11-05 12:38:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 12:38:27,154 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-05 12:38:27,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:38:27,155 INFO L225 Difference]: With dead ends: 307 [2021-11-05 12:38:27,155 INFO L226 Difference]: Without dead ends: 260 [2021-11-05 12:38:27,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1757.44ms TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2021-11-05 12:38:27,156 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 417 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 46 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11256.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.36ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11888.14ms IncrementalHoareTripleChecker+Time [2021-11-05 12:38:27,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 804 Invalid, 439 Unknown, 0 Unchecked, 5.36ms Time], IncrementalHoareTripleChecker [46 Valid, 388 Invalid, 5 Unknown, 0 Unchecked, 11888.14ms Time] [2021-11-05 12:38:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-05 12:38:27,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 168. [2021-11-05 12:38:27,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 160 states have (on average 1.10625) internal successors, (177), 167 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:27,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 177 transitions. [2021-11-05 12:38:27,163 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 177 transitions. Word has length 69 [2021-11-05 12:38:27,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:38:27,163 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 177 transitions. [2021-11-05 12:38:27,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:27,163 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 177 transitions. [2021-11-05 12:38:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-05 12:38:27,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:38:27,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:38:27,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-05 12:38:27,164 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:38:27,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:38:27,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1048466312, now seen corresponding path program 1 times [2021-11-05 12:38:27,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:38:27,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370811643] [2021-11-05 12:38:27,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:38:27,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:38:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:38:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:38:29,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:38:29,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370811643] [2021-11-05 12:38:29,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370811643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:38:29,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:38:29,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 12:38:29,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225717366] [2021-11-05 12:38:29,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:38:29,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 12:38:29,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:38:29,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 12:38:29,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:38:29,656 INFO L87 Difference]: Start difference. First operand 168 states and 177 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:31,762 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 12:38:33,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:35,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:38,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:40,240 WARN L515 Checker$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 12:38:42,358 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:44,473 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:46,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:48,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:54,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:38:54,122 INFO L93 Difference]: Finished difference Result 284 states and 294 transitions. [2021-11-05 12:38:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-05 12:38:54,122 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-05 12:38:54,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:38:54,123 INFO L225 Difference]: With dead ends: 284 [2021-11-05 12:38:54,123 INFO L226 Difference]: Without dead ends: 242 [2021-11-05 12:38:54,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 3549.78ms TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2021-11-05 12:38:54,124 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 412 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 63 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20809.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.09ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21992.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:38:54,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 1368 Invalid, 916 Unknown, 0 Unchecked, 9.09ms Time], IncrementalHoareTripleChecker [63 Valid, 844 Invalid, 9 Unknown, 0 Unchecked, 21992.00ms Time] [2021-11-05 12:38:54,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-05 12:38:54,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 175. [2021-11-05 12:38:54,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 167 states have (on average 1.1017964071856288) internal successors, (184), 174 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:54,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 184 transitions. [2021-11-05 12:38:54,130 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 184 transitions. Word has length 69 [2021-11-05 12:38:54,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:38:54,131 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 184 transitions. [2021-11-05 12:38:54,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:54,131 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 184 transitions. [2021-11-05 12:38:54,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 12:38:54,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:38:54,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:38:54,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-05 12:38:54,131 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:38:54,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:38:54,132 INFO L85 PathProgramCache]: Analyzing trace with hash -235238369, now seen corresponding path program 1 times [2021-11-05 12:38:54,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:38:54,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575280240] [2021-11-05 12:38:54,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:38:54,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:38:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:38:56,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:38:56,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:38:56,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575280240] [2021-11-05 12:38:56,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575280240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:38:56,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:38:56,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-05 12:38:56,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587884796] [2021-11-05 12:38:56,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:38:56,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-05 12:38:56,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:38:56,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-05 12:38:56,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:38:56,770 INFO L87 Difference]: Start difference. First operand 175 states and 184 transitions. Second operand has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:58,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:00,921 WARN L515 Checker$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 12:39:03,033 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:05,136 WARN L515 Checker$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 12:39:07,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:09,344 WARN L515 Checker$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 12:39:11,459 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 12:39:14,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:39:14,830 INFO L93 Difference]: Finished difference Result 240 states and 248 transitions. [2021-11-05 12:39:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 12:39:14,830 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-05 12:39:14,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:39:14,831 INFO L225 Difference]: With dead ends: 240 [2021-11-05 12:39:14,831 INFO L226 Difference]: Without dead ends: 238 [2021-11-05 12:39:14,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 2646.79ms TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2021-11-05 12:39:14,832 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 239 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 42 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15770.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.05ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16621.67ms IncrementalHoareTripleChecker+Time [2021-11-05 12:39:14,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 813 Invalid, 617 Unknown, 0 Unchecked, 6.05ms Time], IncrementalHoareTripleChecker [42 Valid, 568 Invalid, 7 Unknown, 0 Unchecked, 16621.67ms Time] [2021-11-05 12:39:14,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-11-05 12:39:14,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 207. [2021-11-05 12:39:14,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 199 states have (on average 1.0954773869346734) internal successors, (218), 206 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 218 transitions. [2021-11-05 12:39:14,840 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 218 transitions. Word has length 75 [2021-11-05 12:39:14,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:39:14,841 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 218 transitions. [2021-11-05 12:39:14,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:14,841 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 218 transitions. [2021-11-05 12:39:14,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 12:39:14,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:39:14,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:39:14,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-05 12:39:14,842 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:39:14,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:39:14,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1079243871, now seen corresponding path program 1 times [2021-11-05 12:39:14,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:39:14,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173662434] [2021-11-05 12:39:14,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:39:14,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:39:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:39:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:39:16,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:39:16,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173662434] [2021-11-05 12:39:16,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173662434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:39:16,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:39:16,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 12:39:16,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428509575] [2021-11-05 12:39:16,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:39:16,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 12:39:16,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:39:16,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 12:39:16,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:39:16,802 INFO L87 Difference]: Start difference. First operand 207 states and 218 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:18,853 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 12:39:20,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:23,106 WARN L515 Checker$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 12:39:25,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:27,319 WARN L515 Checker$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 12:39:29,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:31,559 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:35,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:39:35,121 INFO L93 Difference]: Finished difference Result 231 states and 239 transitions. [2021-11-05 12:39:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:39:35,121 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-05 12:39:35,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:39:35,122 INFO L225 Difference]: With dead ends: 231 [2021-11-05 12:39:35,122 INFO L226 Difference]: Without dead ends: 216 [2021-11-05 12:39:35,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2281.54ms TimeCoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2021-11-05 12:39:35,123 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 233 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 45 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16041.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.55ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16960.26ms IncrementalHoareTripleChecker+Time [2021-11-05 12:39:35,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 1052 Invalid, 567 Unknown, 0 Unchecked, 5.55ms Time], IncrementalHoareTripleChecker [45 Valid, 515 Invalid, 7 Unknown, 0 Unchecked, 16960.26ms Time] [2021-11-05 12:39:35,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-05 12:39:35,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 205. [2021-11-05 12:39:35,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 197 states have (on average 1.0862944162436547) internal successors, (214), 204 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 214 transitions. [2021-11-05 12:39:35,132 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 214 transitions. Word has length 75 [2021-11-05 12:39:35,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:39:35,132 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 214 transitions. [2021-11-05 12:39:35,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 214 transitions. [2021-11-05 12:39:35,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 12:39:35,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:39:35,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:39:35,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-05 12:39:35,133 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:39:35,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:39:35,134 INFO L85 PathProgramCache]: Analyzing trace with hash 838259593, now seen corresponding path program 1 times [2021-11-05 12:39:35,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:39:35,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174965768] [2021-11-05 12:39:35,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:39:35,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:39:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:39:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:39:39,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:39:39,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174965768] [2021-11-05 12:39:39,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174965768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:39:39,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:39:39,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 12:39:39,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771133612] [2021-11-05 12:39:39,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:39:39,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:39:39,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:39:39,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:39:39,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:39:39,720 INFO L87 Difference]: Start difference. First operand 205 states and 214 transitions. Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:41,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:43,911 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:46,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:48,134 WARN L515 Checker$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 12:39:50,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:52,350 WARN L515 Checker$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 12:39:54,472 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 12:39:58,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:39:58,542 INFO L93 Difference]: Finished difference Result 251 states and 258 transitions. [2021-11-05 12:39:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-05 12:39:58,543 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-05 12:39:58,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:39:58,544 INFO L225 Difference]: With dead ends: 251 [2021-11-05 12:39:58,544 INFO L226 Difference]: Without dead ends: 214 [2021-11-05 12:39:58,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 3028.07ms TimeCoverageRelationStatistics Valid=301, Invalid=1259, Unknown=0, NotChecked=0, Total=1560 [2021-11-05 12:39:58,545 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 470 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 62 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15640.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.48ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16507.14ms IncrementalHoareTripleChecker+Time [2021-11-05 12:39:58,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 852 Invalid, 670 Unknown, 0 Unchecked, 6.48ms Time], IncrementalHoareTripleChecker [62 Valid, 601 Invalid, 7 Unknown, 0 Unchecked, 16507.14ms Time] [2021-11-05 12:39:58,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-05 12:39:58,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 198. [2021-11-05 12:39:58,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 191 states have (on average 1.0785340314136125) internal successors, (206), 197 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:58,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 206 transitions. [2021-11-05 12:39:58,553 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 206 transitions. Word has length 75 [2021-11-05 12:39:58,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:39:58,553 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 206 transitions. [2021-11-05 12:39:58,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:39:58,554 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 206 transitions. [2021-11-05 12:39:58,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 12:39:58,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:39:58,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:39:58,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-05 12:39:58,555 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:39:58,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:39:58,555 INFO L85 PathProgramCache]: Analyzing trace with hash 667231289, now seen corresponding path program 1 times [2021-11-05 12:39:58,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:39:58,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86255785] [2021-11-05 12:39:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:39:58,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:39:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:39:59,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:39:59,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:39:59,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86255785] [2021-11-05 12:39:59,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86255785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:39:59,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:39:59,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:39:59,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190566875] [2021-11-05 12:39:59,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:39:59,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:39:59,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:39:59,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:39:59,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:39:59,502 INFO L87 Difference]: Start difference. First operand 198 states and 206 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:01,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:03,673 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:05,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:07,898 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 12:40:09,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:40:09,329 INFO L93 Difference]: Finished difference Result 266 states and 274 transitions. [2021-11-05 12:40:09,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 12:40:09,330 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-05 12:40:09,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:40:09,330 INFO L225 Difference]: With dead ends: 266 [2021-11-05 12:40:09,330 INFO L226 Difference]: Without dead ends: 232 [2021-11-05 12:40:09,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 478.94ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:40:09,331 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 137 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9022.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.56ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9555.53ms IncrementalHoareTripleChecker+Time [2021-11-05 12:40:09,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 731 Invalid, 367 Unknown, 0 Unchecked, 3.56ms Time], IncrementalHoareTripleChecker [7 Valid, 356 Invalid, 4 Unknown, 0 Unchecked, 9555.53ms Time] [2021-11-05 12:40:09,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-05 12:40:09,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 198. [2021-11-05 12:40:09,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 191 states have (on average 1.0732984293193717) internal successors, (205), 197 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:09,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 205 transitions. [2021-11-05 12:40:09,339 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 205 transitions. Word has length 75 [2021-11-05 12:40:09,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:40:09,340 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 205 transitions. [2021-11-05 12:40:09,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:09,340 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 205 transitions. [2021-11-05 12:40:09,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 12:40:09,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:40:09,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:40:09,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-05 12:40:09,341 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:40:09,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:40:09,341 INFO L85 PathProgramCache]: Analyzing trace with hash 971638839, now seen corresponding path program 1 times [2021-11-05 12:40:09,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:40:09,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566424342] [2021-11-05 12:40:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:40:09,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:40:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:40:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:40:11,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:40:11,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566424342] [2021-11-05 12:40:11,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566424342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:40:11,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:40:11,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:40:11,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236104899] [2021-11-05 12:40:11,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:40:11,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:40:11,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:40:11,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:40:11,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:40:11,700 INFO L87 Difference]: Start difference. First operand 198 states and 205 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:13,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:15,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:17,967 WARN L515 Checker$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 12:40:20,075 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:22,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:24,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:26,443 WARN L515 Checker$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 12:40:28,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:30,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:33,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:40:33,063 INFO L93 Difference]: Finished difference Result 233 states and 237 transitions. [2021-11-05 12:40:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 12:40:33,064 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-05 12:40:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:40:33,064 INFO L225 Difference]: With dead ends: 233 [2021-11-05 12:40:33,064 INFO L226 Difference]: Without dead ends: 215 [2021-11-05 12:40:33,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1650.89ms TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-11-05 12:40:33,065 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 236 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 37 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19487.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.94ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20595.87ms IncrementalHoareTripleChecker+Time [2021-11-05 12:40:33,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 923 Invalid, 544 Unknown, 0 Unchecked, 4.94ms Time], IncrementalHoareTripleChecker [37 Valid, 498 Invalid, 9 Unknown, 0 Unchecked, 20595.87ms Time] [2021-11-05 12:40:33,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-05 12:40:33,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 197. [2021-11-05 12:40:33,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 190 states have (on average 1.063157894736842) internal successors, (202), 196 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:33,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 202 transitions. [2021-11-05 12:40:33,073 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 202 transitions. Word has length 75 [2021-11-05 12:40:33,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:40:33,073 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 202 transitions. [2021-11-05 12:40:33,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:33,074 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 202 transitions. [2021-11-05 12:40:33,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 12:40:33,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:40:33,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:40:33,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-05 12:40:33,075 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:40:33,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:40:33,075 INFO L85 PathProgramCache]: Analyzing trace with hash 971698421, now seen corresponding path program 1 times [2021-11-05 12:40:33,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:40:33,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880444648] [2021-11-05 12:40:33,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:40:33,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:40:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:40:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:40:34,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:40:34,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880444648] [2021-11-05 12:40:34,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880444648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:40:34,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:40:34,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:40:34,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693531206] [2021-11-05 12:40:34,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:40:34,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:40:34,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:40:34,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:40:34,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:40:34,780 INFO L87 Difference]: Start difference. First operand 197 states and 202 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:36,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:38,931 WARN L515 Checker$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 12:40:41,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:43,126 WARN L515 Checker$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 12:40:45,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:47,344 WARN L515 Checker$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 12:40:50,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:40:50,518 INFO L93 Difference]: Finished difference Result 248 states and 250 transitions. [2021-11-05 12:40:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 12:40:50,519 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-05 12:40:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:40:50,520 INFO L225 Difference]: With dead ends: 248 [2021-11-05 12:40:50,520 INFO L226 Difference]: Without dead ends: 235 [2021-11-05 12:40:50,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2293.30ms TimeCoverageRelationStatistics Valid=216, Invalid=654, Unknown=0, NotChecked=0, Total=870 [2021-11-05 12:40:50,520 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 388 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 28 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13314.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.87ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13994.94ms IncrementalHoareTripleChecker+Time [2021-11-05 12:40:50,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1215 Invalid, 500 Unknown, 0 Unchecked, 5.87ms Time], IncrementalHoareTripleChecker [28 Valid, 466 Invalid, 6 Unknown, 0 Unchecked, 13994.94ms Time] [2021-11-05 12:40:50,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-05 12:40:50,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 204. [2021-11-05 12:40:50,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 197 states have (on average 1.0609137055837563) internal successors, (209), 203 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 209 transitions. [2021-11-05 12:40:50,531 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 209 transitions. Word has length 75 [2021-11-05 12:40:50,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:40:50,531 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 209 transitions. [2021-11-05 12:40:50,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:50,531 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 209 transitions. [2021-11-05 12:40:50,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 12:40:50,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:40:50,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:40:50,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-05 12:40:50,532 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:40:50,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:40:50,532 INFO L85 PathProgramCache]: Analyzing trace with hash 971740127, now seen corresponding path program 1 times [2021-11-05 12:40:50,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:40:50,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185003848] [2021-11-05 12:40:50,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:40:50,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:40:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:40:54,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:40:54,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:40:54,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185003848] [2021-11-05 12:40:54,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185003848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:40:54,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:40:54,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:40:54,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843693281] [2021-11-05 12:40:54,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:40:54,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:40:54,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:40:54,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:40:54,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:40:54,714 INFO L87 Difference]: Start difference. First operand 204 states and 209 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:56,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:58,871 WARN L515 Checker$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 12:41:00,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:03,071 WARN L515 Checker$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 12:41:05,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:07,292 WARN L515 Checker$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 12:41:09,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:11,486 WARN L515 Checker$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 12:41:14,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:41:14,397 INFO L93 Difference]: Finished difference Result 218 states and 221 transitions. [2021-11-05 12:41:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:41:14,398 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-05 12:41:14,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:41:14,399 INFO L225 Difference]: With dead ends: 218 [2021-11-05 12:41:14,399 INFO L226 Difference]: Without dead ends: 216 [2021-11-05 12:41:14,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1808.73ms TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2021-11-05 12:41:14,399 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 430 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 49 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17743.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.30ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18694.82ms IncrementalHoareTripleChecker+Time [2021-11-05 12:41:14,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 832 Invalid, 595 Unknown, 0 Unchecked, 7.30ms Time], IncrementalHoareTripleChecker [49 Valid, 538 Invalid, 8 Unknown, 0 Unchecked, 18694.82ms Time] [2021-11-05 12:41:14,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-05 12:41:14,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 202. [2021-11-05 12:41:14,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 196 states have (on average 1.0561224489795917) internal successors, (207), 201 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:14,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 207 transitions. [2021-11-05 12:41:14,409 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 207 transitions. Word has length 75 [2021-11-05 12:41:14,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:41:14,409 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 207 transitions. [2021-11-05 12:41:14,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:14,409 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 207 transitions. [2021-11-05 12:41:14,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-05 12:41:14,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:41:14,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:41:14,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-05 12:41:14,410 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:41:14,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:41:14,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1569328993, now seen corresponding path program 1 times [2021-11-05 12:41:14,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:41:14,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527748883] [2021-11-05 12:41:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:41:14,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:41:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:41:15,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:41:15,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:41:15,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527748883] [2021-11-05 12:41:15,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527748883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:41:15,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:41:15,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:41:15,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244870713] [2021-11-05 12:41:15,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:41:15,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:41:15,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:41:15,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:41:15,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:41:15,673 INFO L87 Difference]: Start difference. First operand 202 states and 207 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:17,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:19,847 WARN L515 Checker$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 12:41:21,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:24,073 WARN L515 Checker$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 12:41:26,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:28,289 WARN L515 Checker$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 12:41:30,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:32,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:41:32,051 INFO L93 Difference]: Finished difference Result 216 states and 219 transitions. [2021-11-05 12:41:32,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:41:32,051 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-05 12:41:32,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:41:32,052 INFO L225 Difference]: With dead ends: 216 [2021-11-05 12:41:32,052 INFO L226 Difference]: Without dead ends: 203 [2021-11-05 12:41:32,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1051.59ms TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-05 12:41:32,052 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 379 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 24 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14936.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.90ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15780.81ms IncrementalHoareTripleChecker+Time [2021-11-05 12:41:32,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 776 Invalid, 359 Unknown, 0 Unchecked, 3.90ms Time], IncrementalHoareTripleChecker [24 Valid, 328 Invalid, 7 Unknown, 0 Unchecked, 15780.81ms Time] [2021-11-05 12:41:32,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-05 12:41:32,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 196. [2021-11-05 12:41:32,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.0471204188481675) internal successors, (200), 195 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:32,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 200 transitions. [2021-11-05 12:41:32,061 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 200 transitions. Word has length 77 [2021-11-05 12:41:32,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:41:32,062 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 200 transitions. [2021-11-05 12:41:32,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:32,062 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 200 transitions. [2021-11-05 12:41:32,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 12:41:32,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:41:32,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:41:32,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-05 12:41:32,063 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:41:32,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:41:32,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2012017411, now seen corresponding path program 1 times [2021-11-05 12:41:32,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:41:32,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98387404] [2021-11-05 12:41:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:41:32,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:41:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:41:38,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:41:38,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:41:38,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98387404] [2021-11-05 12:41:38,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98387404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:41:38,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:41:38,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-05 12:41:38,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937231390] [2021-11-05 12:41:38,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:41:38,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-05 12:41:38,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:41:38,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-05 12:41:38,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2021-11-05 12:41:38,713 INFO L87 Difference]: Start difference. First operand 196 states and 200 transitions. Second operand has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:40,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:42,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:44,978 WARN L515 Checker$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 12:41:47,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:49,189 WARN L515 Checker$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 12:41:51,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:53,389 WARN L515 Checker$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 12:41:55,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:57,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:59,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:01,895 WARN L515 Checker$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 12:42:04,025 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:06,119 WARN L515 Checker$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 12:42:23,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:42:23,672 INFO L93 Difference]: Finished difference Result 223 states and 224 transitions. [2021-11-05 12:42:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-05 12:42:23,673 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-05 12:42:23,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:42:23,674 INFO L225 Difference]: With dead ends: 223 [2021-11-05 12:42:23,674 INFO L226 Difference]: Without dead ends: 221 [2021-11-05 12:42:23,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 15979.98ms TimeCoverageRelationStatistics Valid=588, Invalid=2834, Unknown=0, NotChecked=0, Total=3422 [2021-11-05 12:42:23,674 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 850 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 134 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29792.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.78ms SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31480.54ms IncrementalHoareTripleChecker+Time [2021-11-05 12:42:23,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 1089 Invalid, 1350 Unknown, 0 Unchecked, 13.78ms Time], IncrementalHoareTripleChecker [134 Valid, 1203 Invalid, 13 Unknown, 0 Unchecked, 31480.54ms Time] [2021-11-05 12:42:23,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-05 12:42:23,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 201. [2021-11-05 12:42:23,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 196 states have (on average 1.0459183673469388) internal successors, (205), 200 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:23,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 205 transitions. [2021-11-05 12:42:23,690 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 205 transitions. Word has length 79 [2021-11-05 12:42:23,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:42:23,690 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 205 transitions. [2021-11-05 12:42:23,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:23,690 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 205 transitions. [2021-11-05 12:42:23,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-05 12:42:23,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:42:23,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:42:23,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-05 12:42:23,692 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:42:23,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:42:23,692 INFO L85 PathProgramCache]: Analyzing trace with hash 711781694, now seen corresponding path program 1 times [2021-11-05 12:42:23,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:42:23,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382615928] [2021-11-05 12:42:23,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:42:23,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:42:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:42:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:42:35,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:42:35,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382615928] [2021-11-05 12:42:35,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382615928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:42:35,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:42:35,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-05 12:42:35,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146931953] [2021-11-05 12:42:35,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:42:35,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-05 12:42:35,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:42:35,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-05 12:42:35,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-11-05 12:42:35,400 INFO L87 Difference]: Start difference. First operand 201 states and 205 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:37,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:39,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:41,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:43,777 WARN L515 Checker$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 12:42:45,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:47,978 WARN L515 Checker$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 12:42:50,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:52,175 WARN L515 Checker$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 12:42:54,271 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 12:43:02,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:43:02,989 INFO L93 Difference]: Finished difference Result 207 states and 210 transitions. [2021-11-05 12:43:02,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 12:43:02,990 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-05 12:43:02,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:43:02,990 INFO L225 Difference]: With dead ends: 207 [2021-11-05 12:43:02,990 INFO L226 Difference]: Without dead ends: 136 [2021-11-05 12:43:02,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 8514.37ms TimeCoverageRelationStatistics Valid=275, Invalid=1057, Unknown=0, NotChecked=0, Total=1332 [2021-11-05 12:43:02,991 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 491 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 76 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20119.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.46ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21195.29ms IncrementalHoareTripleChecker+Time [2021-11-05 12:43:02,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 703 Invalid, 603 Unknown, 0 Unchecked, 7.46ms Time], IncrementalHoareTripleChecker [76 Valid, 518 Invalid, 9 Unknown, 0 Unchecked, 21195.29ms Time] [2021-11-05 12:43:02,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-05 12:43:02,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-11-05 12:43:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.0458015267175573) internal successors, (137), 135 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:43:02,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2021-11-05 12:43:02,999 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 81 [2021-11-05 12:43:02,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:43:02,999 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2021-11-05 12:43:03,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:43:03,000 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2021-11-05 12:43:03,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-05 12:43:03,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:43:03,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:43:03,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-05 12:43:03,000 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:43:03,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:43:03,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1067345896, now seen corresponding path program 1 times [2021-11-05 12:43:03,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:43:03,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761191671] [2021-11-05 12:43:03,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:43:03,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:43:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:43:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:43:05,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:43:05,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761191671] [2021-11-05 12:43:05,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761191671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:43:05,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:43:05,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 12:43:05,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399106174] [2021-11-05 12:43:05,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:43:05,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 12:43:05,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:43:05,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 12:43:05,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:43:05,645 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:43:07,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:09,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:11,897 WARN L515 Checker$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 12:43:13,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:16,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:18,238 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:20,369 WARN L515 Checker$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 12:43:22,471 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:24,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:26,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:29,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:43:29,116 INFO L93 Difference]: Finished difference Result 136 states and 137 transitions. [2021-11-05 12:43:29,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:43:29,117 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-05 12:43:29,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:43:29,117 INFO L225 Difference]: With dead ends: 136 [2021-11-05 12:43:29,117 INFO L226 Difference]: Without dead ends: 123 [2021-11-05 12:43:29,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2254.32ms TimeCoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2021-11-05 12:43:29,118 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 291 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 37 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21142.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.74ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22361.54ms IncrementalHoareTripleChecker+Time [2021-11-05 12:43:29,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 494 Invalid, 407 Unknown, 0 Unchecked, 3.74ms Time], IncrementalHoareTripleChecker [37 Valid, 360 Invalid, 10 Unknown, 0 Unchecked, 22361.54ms Time] [2021-11-05 12:43:29,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-05 12:43:29,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-05 12:43:29,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 121 states have (on average 1.024793388429752) internal successors, (124), 122 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:43:29,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2021-11-05 12:43:29,124 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 81 [2021-11-05 12:43:29,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:43:29,124 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2021-11-05 12:43:29,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:43:29,124 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2021-11-05 12:43:29,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-05 12:43:29,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:43:29,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:43:29,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-05 12:43:29,125 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:43:29,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:43:29,126 INFO L85 PathProgramCache]: Analyzing trace with hash 813584261, now seen corresponding path program 1 times [2021-11-05 12:43:29,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:43:29,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393402573] [2021-11-05 12:43:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:43:29,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:43:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:43:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:43:33,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:43:33,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393402573] [2021-11-05 12:43:33,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393402573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:43:33,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:43:33,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 12:43:33,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672859817] [2021-11-05 12:43:33,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:43:33,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:43:33,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:43:33,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:43:33,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:43:33,320 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:43:35,367 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:37,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:39,580 WARN L515 Checker$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 12:43:41,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:43,821 WARN L515 Checker$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 12:43:46,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:43:47,769 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2021-11-05 12:43:47,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 12:43:47,769 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-05 12:43:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:43:47,770 INFO L225 Difference]: With dead ends: 123 [2021-11-05 12:43:47,770 INFO L226 Difference]: Without dead ends: 99 [2021-11-05 12:43:47,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1712.86ms TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-11-05 12:43:47,770 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 167 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 23 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12950.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.08ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13713.33ms IncrementalHoareTripleChecker+Time [2021-11-05 12:43:47,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 384 Invalid, 358 Unknown, 0 Unchecked, 3.08ms Time], IncrementalHoareTripleChecker [23 Valid, 329 Invalid, 6 Unknown, 0 Unchecked, 13713.33ms Time] [2021-11-05 12:43:47,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-05 12:43:47,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2021-11-05 12:43:47,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.010989010989011) internal successors, (92), 91 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 12:43:47,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2021-11-05 12:43:47,774 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 81 [2021-11-05 12:43:47,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:43:47,775 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2021-11-05 12:43:47,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:43:47,775 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2021-11-05 12:43:47,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:43:47,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:43:47,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:43:47,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-05 12:43:47,775 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:43:47,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:43:47,775 INFO L85 PathProgramCache]: Analyzing trace with hash -128599946, now seen corresponding path program 1 times [2021-11-05 12:43:47,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:43:47,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261897523] [2021-11-05 12:43:47,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:43:47,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:43:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:43:56,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:43:56,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:43:56,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261897523] [2021-11-05 12:43:56,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261897523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:43:56,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:43:56,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-05 12:43:56,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326208905] [2021-11-05 12:43:56,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:43:56,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-05 12:43:56,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:43:56,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-05 12:43:56,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2021-11-05 12:43:56,373 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:43:58,417 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 12:44:00,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:02,666 WARN L515 Checker$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 12:44:04,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:06,881 WARN L515 Checker$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 12:44:08,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:11,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:13,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:15,397 WARN L515 Checker$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 12:44:17,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:19,667 WARN L515 Checker$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 12:44:21,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:44:27,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:44:27,064 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2021-11-05 12:44:27,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:44:27,064 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-05 12:44:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:44:27,065 INFO L225 Difference]: With dead ends: 92 [2021-11-05 12:44:27,065 INFO L226 Difference]: Without dead ends: 0 [2021-11-05 12:44:27,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 6266.44ms TimeCoverageRelationStatistics Valid=196, Invalid=1286, Unknown=0, NotChecked=0, Total=1482 [2021-11-05 12:44:27,065 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 377 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 46 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26078.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.67ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27674.82ms IncrementalHoareTripleChecker+Time [2021-11-05 12:44:27,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 597 Invalid, 652 Unknown, 0 Unchecked, 6.67ms Time], IncrementalHoareTripleChecker [46 Valid, 594 Invalid, 12 Unknown, 0 Unchecked, 27674.82ms Time] [2021-11-05 12:44:27,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-05 12:44:27,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-05 12:44:27,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:44:27,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-05 12:44:27,066 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2021-11-05 12:44:27,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:44:27,066 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-05 12:44:27,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:44:27,066 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-05 12:44:27,067 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-05 12:44:27,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (9 of 10 remaining) [2021-11-05 12:44:27,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (8 of 10 remaining) [2021-11-05 12:44:27,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (7 of 10 remaining) [2021-11-05 12:44:27,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (6 of 10 remaining) [2021-11-05 12:44:27,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 10 remaining) [2021-11-05 12:44:27,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 10 remaining) [2021-11-05 12:44:27,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (3 of 10 remaining) [2021-11-05 12:44:27,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (2 of 10 remaining) [2021-11-05 12:44:27,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (1 of 10 remaining) [2021-11-05 12:44:27,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (0 of 10 remaining) [2021-11-05 12:44:27,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-05 12:44:27,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Killed by 15