./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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_linked_list_swap_contents_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 fab5c58d108ab0116c19af669265df6088034967e28562e9e7d2713e6ada683d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 09:56:29,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 09:56:29,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 09:56:29,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 09:56:29,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 09:56:29,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 09:56:29,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 09:56:29,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 09:56:29,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 09:56:29,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 09:56:29,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 09:56:29,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 09:56:29,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 09:56:29,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 09:56:29,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 09:56:29,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 09:56:29,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 09:56:29,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 09:56:29,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 09:56:29,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 09:56:29,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 09:56:29,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 09:56:29,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 09:56:29,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 09:56:29,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 09:56:29,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 09:56:29,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 09:56:29,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 09:56:29,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 09:56:29,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 09:56:29,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 09:56:29,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 09:56:29,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 09:56:29,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 09:56:29,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 09:56:29,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 09:56:29,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 09:56:29,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 09:56:29,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 09:56:29,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 09:56:29,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 09:56:29,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 09:56:29,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 09:56:29,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 09:56:29,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 09:56:29,627 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 09:56:29,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 09:56:29,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 09:56:29,628 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 09:56:29,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 09:56:29,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 09:56:29,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 09:56:29,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 09:56:29,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 09:56:29,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 09:56:29,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 09:56:29,629 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 09:56:29,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 09:56:29,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 09:56:29,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 09:56:29,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 09:56:29,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 09:56:29,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 09:56:29,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 09:56:29,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 09:56:29,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 09:56:29,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 09:56:29,630 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 09:56:29,630 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 09:56:29,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 09:56:29,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 09:56:29,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fab5c58d108ab0116c19af669265df6088034967e28562e9e7d2713e6ada683d [2021-11-07 09:56:29,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 09:56:29,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 09:56:29,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 09:56:29,873 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 09:56:29,874 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 09:56:29,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i [2021-11-07 09:56:29,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d823e64/15c69218f6d94e72af5224f3bf2bf275/FLAG7bab6c878 [2021-11-07 09:56:30,527 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 09:56:30,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i [2021-11-07 09:56:30,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d823e64/15c69218f6d94e72af5224f3bf2bf275/FLAG7bab6c878 [2021-11-07 09:56:30,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d823e64/15c69218f6d94e72af5224f3bf2bf275 [2021-11-07 09:56:30,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 09:56:30,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 09:56:30,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 09:56:30,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 09:56:30,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 09:56:30,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:56:30" (1/1) ... [2021-11-07 09:56:30,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f87d619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:56:30, skipping insertion in model container [2021-11-07 09:56:30,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:56:30" (1/1) ... [2021-11-07 09:56:30,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 09:56:31,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 09:56:31,277 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_linked_list_swap_contents_harness.i[4503,4516] [2021-11-07 09:56:31,281 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_linked_list_swap_contents_harness.i[4563,4576] [2021-11-07 09:56:31,294 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 09:56:31,298 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 09:56:31,891 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:31,892 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:31,893 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:31,894 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:31,896 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:31,910 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:31,915 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:31,917 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:31,918 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:31,920 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:31,921 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:31,921 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:31,921 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:32,173 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 09:56:32,174 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 09:56:32,175 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 09:56:32,176 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 09:56:32,176 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 09:56:32,177 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 09:56:32,177 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 09:56:32,178 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 09:56:32,180 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 09:56:32,181 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 09:56:32,268 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 09:56:32,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 09:56:32,304 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 09:56:32,313 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_linked_list_swap_contents_harness.i[4503,4516] [2021-11-07 09:56:32,313 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_linked_list_swap_contents_harness.i[4563,4576] [2021-11-07 09:56:32,314 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 09:56:32,315 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 09:56:32,334 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:32,335 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:32,335 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:32,365 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:32,365 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:32,368 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:32,368 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:32,369 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:32,369 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:32,369 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:32,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:32,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:32,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:56:32,413 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 09:56:32,428 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 09:56:32,428 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 09:56:32,429 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 09:56:32,430 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 09:56:32,430 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 09:56:32,430 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 09:56:32,431 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 09:56:32,431 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 09:56:32,431 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 09:56:32,446 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 09:56:32,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 09:56:32,619 INFO L208 MainTranslator]: Completed translation [2021-11-07 09:56:32,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:56:32 WrapperNode [2021-11-07 09:56:32,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 09:56:32,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 09:56:32,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 09:56:32,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 09:56:32,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:56:32" (1/1) ... [2021-11-07 09:56:32,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:56:32" (1/1) ... [2021-11-07 09:56:32,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 09:56:32,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 09:56:32,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 09:56:32,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 09:56:32,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:56:32" (1/1) ... [2021-11-07 09:56:32,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:56:32" (1/1) ... [2021-11-07 09:56:32,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:56:32" (1/1) ... [2021-11-07 09:56:32,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:56:32" (1/1) ... [2021-11-07 09:56:32,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:56:32" (1/1) ... [2021-11-07 09:56:32,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:56:32" (1/1) ... [2021-11-07 09:56:32,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:56:32" (1/1) ... [2021-11-07 09:56:32,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 09:56:32,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 09:56:32,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 09:56:32,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 09:56:32,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:56:32" (1/1) ... [2021-11-07 09:56:32,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 09:56:32,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:56:32,953 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) [2021-11-07 09:56:32,960 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 [2021-11-07 09:56:33,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 09:56:33,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 09:56:33,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 09:56:33,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 09:56:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 09:56:33,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 09:56:33,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 09:56:33,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 09:56:33,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 09:56:33,872 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 09:56:33,873 INFO L299 CfgBuilder]: Removed 138 assume(true) statements. [2021-11-07 09:56:33,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:56:33 BoogieIcfgContainer [2021-11-07 09:56:33,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 09:56:33,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 09:56:33,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 09:56:33,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 09:56:33,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:56:30" (1/3) ... [2021-11-07 09:56:33,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a3f9eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:56:33, skipping insertion in model container [2021-11-07 09:56:33,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:56:32" (2/3) ... [2021-11-07 09:56:33,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a3f9eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:56:33, skipping insertion in model container [2021-11-07 09:56:33,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:56:33" (3/3) ... [2021-11-07 09:56:33,880 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_swap_contents_harness.i [2021-11-07 09:56:33,883 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 09:56:33,884 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-07 09:56:33,912 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 09:56:33,931 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 [2021-11-07 09:56:33,932 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-07 09:56:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 267 states, 252 states have (on average 1.5674603174603174) internal successors, (395), 266 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:33,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 09:56:33,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:33,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:33,950 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:33,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:33,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2109692067, now seen corresponding path program 1 times [2021-11-07 09:56:33,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:33,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772656730] [2021-11-07 09:56:33,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:33,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:34,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:56:34,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:34,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772656730] [2021-11-07 09:56:34,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772656730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:34,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:56:34,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 09:56:34,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201280329] [2021-11-07 09:56:34,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:34,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 09:56:34,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:34,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 09:56:34,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 09:56:34,217 INFO L87 Difference]: Start difference. First operand has 267 states, 252 states have (on average 1.5674603174603174) internal successors, (395), 266 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:34,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:34,246 INFO L93 Difference]: Finished difference Result 530 states and 785 transitions. [2021-11-07 09:56:34,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 09:56:34,262 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 09:56:34,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:34,276 INFO L225 Difference]: With dead ends: 530 [2021-11-07 09:56:34,277 INFO L226 Difference]: Without dead ends: 260 [2021-11-07 09:56:34,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.05ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 09:56:34,287 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.38ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:34,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 2.38ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 09:56:34,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-07 09:56:34,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-11-07 09:56:34,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 246 states have (on average 1.4308943089430894) internal successors, (352), 259 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:34,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 352 transitions. [2021-11-07 09:56:34,326 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 352 transitions. Word has length 53 [2021-11-07 09:56:34,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:34,327 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 352 transitions. [2021-11-07 09:56:34,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:34,330 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 352 transitions. [2021-11-07 09:56:34,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 09:56:34,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:34,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:34,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 09:56:34,332 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:34,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:34,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1639619295, now seen corresponding path program 1 times [2021-11-07 09:56:34,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:34,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755159457] [2021-11-07 09:56:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:34,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:56:34,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:34,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755159457] [2021-11-07 09:56:34,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755159457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:34,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:56:34,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:56:34,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960213852] [2021-11-07 09:56:34,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:34,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:56:34,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:34,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:56:34,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:56:34,477 INFO L87 Difference]: Start difference. First operand 260 states and 352 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:34,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:34,669 INFO L93 Difference]: Finished difference Result 563 states and 782 transitions. [2021-11-07 09:56:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:56:34,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 09:56:34,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:34,673 INFO L225 Difference]: With dead ends: 563 [2021-11-07 09:56:34,673 INFO L226 Difference]: Without dead ends: 324 [2021-11-07 09:56:34,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.98ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:56:34,674 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 72 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.60ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 166.20ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:34,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 986 Invalid, 203 Unknown, 0 Unchecked, 4.60ms Time], IncrementalHoareTripleChecker [29 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 166.20ms Time] [2021-11-07 09:56:34,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-07 09:56:34,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 276. [2021-11-07 09:56:34,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 262 states have (on average 1.4045801526717556) internal successors, (368), 275 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:34,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 368 transitions. [2021-11-07 09:56:34,687 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 368 transitions. Word has length 53 [2021-11-07 09:56:34,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:34,688 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 368 transitions. [2021-11-07 09:56:34,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:34,688 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 368 transitions. [2021-11-07 09:56:34,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 09:56:34,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:34,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:34,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 09:56:34,690 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:34,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:34,691 INFO L85 PathProgramCache]: Analyzing trace with hash 795613793, now seen corresponding path program 1 times [2021-11-07 09:56:34,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:34,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863936651] [2021-11-07 09:56:34,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:34,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:56:34,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:34,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863936651] [2021-11-07 09:56:34,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863936651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:34,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:56:34,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:56:34,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862045866] [2021-11-07 09:56:34,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:34,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:56:34,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:34,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:56:34,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:56:34,785 INFO L87 Difference]: Start difference. First operand 276 states and 368 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:34,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:34,919 INFO L93 Difference]: Finished difference Result 559 states and 761 transitions. [2021-11-07 09:56:34,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:56:34,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 09:56:34,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:34,921 INFO L225 Difference]: With dead ends: 559 [2021-11-07 09:56:34,921 INFO L226 Difference]: Without dead ends: 308 [2021-11-07 09:56:34,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.00ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:56:34,923 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 20 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.58ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:34,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 939 Invalid, 171 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [41 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 105.58ms Time] [2021-11-07 09:56:34,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-07 09:56:34,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 300. [2021-11-07 09:56:34,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 286 states have (on average 1.3706293706293706) internal successors, (392), 299 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:34,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 392 transitions. [2021-11-07 09:56:34,931 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 392 transitions. Word has length 53 [2021-11-07 09:56:34,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:34,931 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 392 transitions. [2021-11-07 09:56:34,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:34,931 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 392 transitions. [2021-11-07 09:56:34,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 09:56:34,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:34,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:34,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 09:56:34,933 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:34,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:34,934 INFO L85 PathProgramCache]: Analyzing trace with hash 725074277, now seen corresponding path program 1 times [2021-11-07 09:56:34,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:34,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225439960] [2021-11-07 09:56:34,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:34,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:56:35,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:35,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225439960] [2021-11-07 09:56:35,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225439960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:35,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:56:35,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:56:35,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698229217] [2021-11-07 09:56:35,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:35,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:56:35,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:35,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:56:35,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:56:35,024 INFO L87 Difference]: Start difference. First operand 300 states and 392 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:35,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:35,191 INFO L93 Difference]: Finished difference Result 659 states and 847 transitions. [2021-11-07 09:56:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:56:35,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 09:56:35,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:35,194 INFO L225 Difference]: With dead ends: 659 [2021-11-07 09:56:35,194 INFO L226 Difference]: Without dead ends: 380 [2021-11-07 09:56:35,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.51ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:56:35,197 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 90 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.49ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 148.97ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:35,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 1000 Invalid, 175 Unknown, 0 Unchecked, 2.49ms Time], IncrementalHoareTripleChecker [29 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 148.97ms Time] [2021-11-07 09:56:35,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-07 09:56:35,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 316. [2021-11-07 09:56:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 302 states have (on average 1.3509933774834437) internal successors, (408), 315 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:35,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 408 transitions. [2021-11-07 09:56:35,230 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 408 transitions. Word has length 53 [2021-11-07 09:56:35,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:35,231 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 408 transitions. [2021-11-07 09:56:35,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:35,231 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 408 transitions. [2021-11-07 09:56:35,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 09:56:35,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:35,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:35,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 09:56:35,233 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:35,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:35,234 INFO L85 PathProgramCache]: Analyzing trace with hash 871955103, now seen corresponding path program 1 times [2021-11-07 09:56:35,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:35,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663374495] [2021-11-07 09:56:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:35,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:56:35,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:35,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663374495] [2021-11-07 09:56:35,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663374495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:35,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:56:35,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:56:35,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619528865] [2021-11-07 09:56:35,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:35,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:56:35,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:35,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:56:35,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:56:35,376 INFO L87 Difference]: Start difference. First operand 316 states and 408 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2021-11-07 09:56:35,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:35,481 INFO L93 Difference]: Finished difference Result 562 states and 722 transitions. [2021-11-07 09:56:35,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:56:35,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 [2021-11-07 09:56:35,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:35,483 INFO L225 Difference]: With dead ends: 562 [2021-11-07 09:56:35,484 INFO L226 Difference]: Without dead ends: 310 [2021-11-07 09:56:35,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.56ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:56:35,486 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 651 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.01ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.30ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:35,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 647 Invalid, 76 Unknown, 0 Unchecked, 2.01ms Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 85.30ms Time] [2021-11-07 09:56:35,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-07 09:56:35,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2021-11-07 09:56:35,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 296 states have (on average 1.347972972972973) internal successors, (399), 309 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 399 transitions. [2021-11-07 09:56:35,497 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 399 transitions. Word has length 53 [2021-11-07 09:56:35,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:35,498 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 399 transitions. [2021-11-07 09:56:35,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2021-11-07 09:56:35,498 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 399 transitions. [2021-11-07 09:56:35,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 09:56:35,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:35,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:35,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 09:56:35,501 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:35,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:35,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1234547367, now seen corresponding path program 1 times [2021-11-07 09:56:35,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:35,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123791184] [2021-11-07 09:56:35,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:35,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:35,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:56:35,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:35,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123791184] [2021-11-07 09:56:35,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123791184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:35,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:56:35,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:56:35,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316746497] [2021-11-07 09:56:35,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:35,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:56:35,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:35,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:56:35,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:56:35,598 INFO L87 Difference]: Start difference. First operand 310 states and 399 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:35,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:35,700 INFO L93 Difference]: Finished difference Result 660 states and 826 transitions. [2021-11-07 09:56:35,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:56:35,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 09:56:35,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:35,704 INFO L225 Difference]: With dead ends: 660 [2021-11-07 09:56:35,705 INFO L226 Difference]: Without dead ends: 378 [2021-11-07 09:56:35,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.51ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:56:35,707 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 78 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.06ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:35,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 987 Invalid, 73 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [9 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 67.06ms Time] [2021-11-07 09:56:35,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-11-07 09:56:35,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 298. [2021-11-07 09:56:35,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 284 states have (on average 1.3309859154929577) internal successors, (378), 297 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:35,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 378 transitions. [2021-11-07 09:56:35,715 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 378 transitions. Word has length 53 [2021-11-07 09:56:35,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:35,716 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 378 transitions. [2021-11-07 09:56:35,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:35,716 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 378 transitions. [2021-11-07 09:56:35,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 09:56:35,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:35,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:35,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 09:56:35,717 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:35,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:35,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1042091935, now seen corresponding path program 1 times [2021-11-07 09:56:35,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:35,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632947629] [2021-11-07 09:56:35,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:35,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:56:35,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:35,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632947629] [2021-11-07 09:56:35,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632947629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:35,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:56:35,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:56:35,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102004643] [2021-11-07 09:56:35,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:35,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:56:35,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:35,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:56:35,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:56:35,802 INFO L87 Difference]: Start difference. First operand 298 states and 378 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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) [2021-11-07 09:56:35,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:35,922 INFO L93 Difference]: Finished difference Result 616 states and 772 transitions. [2021-11-07 09:56:35,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:56:35,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 [2021-11-07 09:56:35,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:35,924 INFO L225 Difference]: With dead ends: 616 [2021-11-07 09:56:35,924 INFO L226 Difference]: Without dead ends: 352 [2021-11-07 09:56:35,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.81ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:56:35,925 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 471 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.16ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.60ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:35,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 897 Invalid, 119 Unknown, 0 Unchecked, 2.16ms Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 95.60ms Time] [2021-11-07 09:56:35,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-11-07 09:56:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 298. [2021-11-07 09:56:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 284 states have (on average 1.323943661971831) internal successors, (376), 297 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 376 transitions. [2021-11-07 09:56:35,931 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 376 transitions. Word has length 57 [2021-11-07 09:56:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:35,932 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 376 transitions. [2021-11-07 09:56:35,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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) [2021-11-07 09:56:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 376 transitions. [2021-11-07 09:56:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 09:56:35,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:35,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:35,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 09:56:35,933 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:35,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:35,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1155910083, now seen corresponding path program 1 times [2021-11-07 09:56:35,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:35,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569107626] [2021-11-07 09:56:35,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:35,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:35,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:56:35,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:35,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569107626] [2021-11-07 09:56:35,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569107626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:35,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:56:35,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:56:35,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136187592] [2021-11-07 09:56:35,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:35,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:56:35,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:35,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:56:35,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:56:35,997 INFO L87 Difference]: Start difference. First operand 298 states and 376 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:36,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:36,174 INFO L93 Difference]: Finished difference Result 702 states and 869 transitions. [2021-11-07 09:56:36,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:56:36,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 09:56:36,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:36,177 INFO L225 Difference]: With dead ends: 702 [2021-11-07 09:56:36,177 INFO L226 Difference]: Without dead ends: 437 [2021-11-07 09:56:36,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 31.90ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:56:36,178 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 712 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.79ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 133.84ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:36,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 1211 Invalid, 201 Unknown, 0 Unchecked, 2.79ms Time], IncrementalHoareTripleChecker [12 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 133.84ms Time] [2021-11-07 09:56:36,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-07 09:56:36,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 300. [2021-11-07 09:56:36,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 286 states have (on average 1.3216783216783217) internal successors, (378), 299 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:36,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 378 transitions. [2021-11-07 09:56:36,186 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 378 transitions. Word has length 59 [2021-11-07 09:56:36,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:36,187 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 378 transitions. [2021-11-07 09:56:36,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:36,187 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 378 transitions. [2021-11-07 09:56:36,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 09:56:36,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:36,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:36,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 09:56:36,188 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:36,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:36,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1929169454, now seen corresponding path program 1 times [2021-11-07 09:56:36,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:36,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41432330] [2021-11-07 09:56:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:36,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:36,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:56:36,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:36,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41432330] [2021-11-07 09:56:36,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41432330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:36,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:56:36,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:56:36,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522620344] [2021-11-07 09:56:36,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:36,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:56:36,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:36,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:56:36,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:56:36,283 INFO L87 Difference]: Start difference. First operand 300 states and 378 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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) [2021-11-07 09:56:36,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:36,489 INFO L93 Difference]: Finished difference Result 830 states and 1021 transitions. [2021-11-07 09:56:36,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:56:36,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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 [2021-11-07 09:56:36,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:36,492 INFO L225 Difference]: With dead ends: 830 [2021-11-07 09:56:36,492 INFO L226 Difference]: Without dead ends: 564 [2021-11-07 09:56:36,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 45.20ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:56:36,494 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 954 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.18ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 149.63ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:36,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [954 Valid, 1156 Invalid, 208 Unknown, 0 Unchecked, 3.18ms Time], IncrementalHoareTripleChecker [22 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 149.63ms Time] [2021-11-07 09:56:36,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-11-07 09:56:36,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 302. [2021-11-07 09:56:36,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 288 states have (on average 1.3194444444444444) internal successors, (380), 301 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:36,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 380 transitions. [2021-11-07 09:56:36,504 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 380 transitions. Word has length 60 [2021-11-07 09:56:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:36,505 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 380 transitions. [2021-11-07 09:56:36,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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) [2021-11-07 09:56:36,505 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 380 transitions. [2021-11-07 09:56:36,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 09:56:36,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:36,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:36,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 09:56:36,506 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:36,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:36,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1929551887, now seen corresponding path program 1 times [2021-11-07 09:56:36,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:36,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74444564] [2021-11-07 09:56:36,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:36,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:36,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:56:36,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:36,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74444564] [2021-11-07 09:56:36,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74444564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:36,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:56:36,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 09:56:36,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556911371] [2021-11-07 09:56:36,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:36,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 09:56:36,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:36,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 09:56:36,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:56:36,650 INFO L87 Difference]: Start difference. First operand 302 states and 380 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:38,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:38,614 INFO L93 Difference]: Finished difference Result 1679 states and 1985 transitions. [2021-11-07 09:56:38,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 09:56:38,615 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 09:56:38,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:38,619 INFO L225 Difference]: With dead ends: 1679 [2021-11-07 09:56:38,619 INFO L226 Difference]: Without dead ends: 1404 [2021-11-07 09:56:38,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 360.06ms TimeCoverageRelationStatistics Valid=228, Invalid=528, Unknown=0, NotChecked=0, Total=756 [2021-11-07 09:56:38,621 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 2824 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1340.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2824 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.31ms SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1550.03ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:38,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2824 Valid, 2954 Invalid, 1996 Unknown, 0 Unchecked, 13.31ms Time], IncrementalHoareTripleChecker [259 Valid, 1737 Invalid, 0 Unknown, 0 Unchecked, 1550.03ms Time] [2021-11-07 09:56:38,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-07 09:56:38,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 338. [2021-11-07 09:56:38,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 324 states have (on average 1.345679012345679) internal successors, (436), 337 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:38,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 436 transitions. [2021-11-07 09:56:38,639 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 436 transitions. Word has length 65 [2021-11-07 09:56:38,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:38,640 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 436 transitions. [2021-11-07 09:56:38,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:38,640 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 436 transitions. [2021-11-07 09:56:38,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 09:56:38,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:38,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:38,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 09:56:38,642 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:38,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:38,642 INFO L85 PathProgramCache]: Analyzing trace with hash -900192589, now seen corresponding path program 1 times [2021-11-07 09:56:38,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:38,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574660680] [2021-11-07 09:56:38,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:38,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:56:38,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:38,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574660680] [2021-11-07 09:56:38,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574660680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:38,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:56:38,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:56:38,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123922658] [2021-11-07 09:56:38,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:38,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:56:38,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:38,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:56:38,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:56:38,738 INFO L87 Difference]: Start difference. First operand 338 states and 436 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:38,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:38,922 INFO L93 Difference]: Finished difference Result 765 states and 969 transitions. [2021-11-07 09:56:38,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 09:56:38,923 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 09:56:38,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:38,925 INFO L225 Difference]: With dead ends: 765 [2021-11-07 09:56:38,925 INFO L226 Difference]: Without dead ends: 493 [2021-11-07 09:56:38,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 28.73ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:56:38,926 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 1316 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.17ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 141.65ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:38,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 702 Invalid, 131 Unknown, 0 Unchecked, 2.17ms Time], IncrementalHoareTripleChecker [16 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 141.65ms Time] [2021-11-07 09:56:38,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-11-07 09:56:38,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 338. [2021-11-07 09:56:38,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 324 states have (on average 1.3364197530864197) internal successors, (433), 337 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 433 transitions. [2021-11-07 09:56:38,940 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 433 transitions. Word has length 65 [2021-11-07 09:56:38,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:38,941 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 433 transitions. [2021-11-07 09:56:38,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:38,941 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 433 transitions. [2021-11-07 09:56:38,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 09:56:38,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:38,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:38,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 09:56:38,942 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:38,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:38,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1655542961, now seen corresponding path program 1 times [2021-11-07 09:56:38,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:38,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363893727] [2021-11-07 09:56:38,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:38,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:56:39,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:39,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363893727] [2021-11-07 09:56:39,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363893727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:39,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:56:39,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:56:39,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538770204] [2021-11-07 09:56:39,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:39,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:56:39,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:39,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:56:39,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:56:39,027 INFO L87 Difference]: Start difference. First operand 338 states and 433 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:39,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:39,286 INFO L93 Difference]: Finished difference Result 966 states and 1202 transitions. [2021-11-07 09:56:39,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 09:56:39,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 09:56:39,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:39,288 INFO L225 Difference]: With dead ends: 966 [2021-11-07 09:56:39,288 INFO L226 Difference]: Without dead ends: 693 [2021-11-07 09:56:39,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 45.53ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:56:39,289 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 1963 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 167.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.83ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 195.86ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:39,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1963 Valid, 1048 Invalid, 241 Unknown, 0 Unchecked, 2.83ms Time], IncrementalHoareTripleChecker [33 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 195.86ms Time] [2021-11-07 09:56:39,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-11-07 09:56:39,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 338. [2021-11-07 09:56:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 324 states have (on average 1.3271604938271604) internal successors, (430), 337 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 430 transitions. [2021-11-07 09:56:39,301 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 430 transitions. Word has length 67 [2021-11-07 09:56:39,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:39,302 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 430 transitions. [2021-11-07 09:56:39,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:39,302 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 430 transitions. [2021-11-07 09:56:39,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 09:56:39,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:39,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:39,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 09:56:39,303 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:39,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:39,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1465083877, now seen corresponding path program 1 times [2021-11-07 09:56:39,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:39,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916579405] [2021-11-07 09:56:39,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:39,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:56:39,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:39,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916579405] [2021-11-07 09:56:39,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916579405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:39,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:56:39,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:56:39,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193899041] [2021-11-07 09:56:39,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:39,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:56:39,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:39,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:56:39,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:56:39,405 INFO L87 Difference]: Start difference. First operand 338 states and 430 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:39,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:39,682 INFO L93 Difference]: Finished difference Result 969 states and 1200 transitions. [2021-11-07 09:56:39,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 09:56:39,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-07 09:56:39,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:39,684 INFO L225 Difference]: With dead ends: 969 [2021-11-07 09:56:39,685 INFO L226 Difference]: Without dead ends: 696 [2021-11-07 09:56:39,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 53.37ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:56:39,686 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 2251 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 168.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2251 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.06ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 202.66ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:39,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2251 Valid, 948 Invalid, 241 Unknown, 0 Unchecked, 3.06ms Time], IncrementalHoareTripleChecker [46 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 202.66ms Time] [2021-11-07 09:56:39,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-11-07 09:56:39,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 338. [2021-11-07 09:56:39,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 324 states have (on average 1.3179012345679013) internal successors, (427), 337 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:39,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 427 transitions. [2021-11-07 09:56:39,703 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 427 transitions. Word has length 68 [2021-11-07 09:56:39,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:39,703 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 427 transitions. [2021-11-07 09:56:39,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:39,703 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 427 transitions. [2021-11-07 09:56:39,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 09:56:39,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:39,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:39,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 09:56:39,705 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:39,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:39,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1833549603, now seen corresponding path program 1 times [2021-11-07 09:56:39,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:39,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008680115] [2021-11-07 09:56:39,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:39,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:39,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:56:39,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:39,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008680115] [2021-11-07 09:56:39,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008680115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:39,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:56:39,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:56:39,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405843636] [2021-11-07 09:56:39,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:39,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:56:39,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:39,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:56:39,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:56:39,763 INFO L87 Difference]: Start difference. First operand 338 states and 427 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:39,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:39,844 INFO L93 Difference]: Finished difference Result 678 states and 861 transitions. [2021-11-07 09:56:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:56:39,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 09:56:39,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:39,846 INFO L225 Difference]: With dead ends: 678 [2021-11-07 09:56:39,846 INFO L226 Difference]: Without dead ends: 370 [2021-11-07 09:56:39,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:56:39,847 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 24 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.91ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.06ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:39,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 913 Invalid, 129 Unknown, 0 Unchecked, 0.91ms Time], IncrementalHoareTripleChecker [29 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 61.06ms Time] [2021-11-07 09:56:39,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-07 09:56:39,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 354. [2021-11-07 09:56:39,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 340 states have (on average 1.3029411764705883) internal successors, (443), 353 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:39,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 443 transitions. [2021-11-07 09:56:39,863 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 443 transitions. Word has length 73 [2021-11-07 09:56:39,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:39,864 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 443 transitions. [2021-11-07 09:56:39,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:39,864 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 443 transitions. [2021-11-07 09:56:39,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 09:56:39,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:39,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:39,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 09:56:39,865 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:39,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1974098213, now seen corresponding path program 1 times [2021-11-07 09:56:39,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:39,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651061018] [2021-11-07 09:56:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:39,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:56:39,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:39,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651061018] [2021-11-07 09:56:39,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651061018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:39,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:56:39,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:56:39,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463333989] [2021-11-07 09:56:39,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:39,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:56:39,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:39,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:56:39,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:56:39,970 INFO L87 Difference]: Start difference. First operand 354 states and 443 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:40,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:40,322 INFO L93 Difference]: Finished difference Result 998 states and 1226 transitions. [2021-11-07 09:56:40,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 09:56:40,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 09:56:40,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:40,324 INFO L225 Difference]: With dead ends: 998 [2021-11-07 09:56:40,325 INFO L226 Difference]: Without dead ends: 703 [2021-11-07 09:56:40,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 81.68ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:56:40,326 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 2185 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 210.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.51ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 248.87ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:40,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2185 Valid, 1210 Invalid, 337 Unknown, 0 Unchecked, 3.51ms Time], IncrementalHoareTripleChecker [60 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 248.87ms Time] [2021-11-07 09:56:40,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-11-07 09:56:40,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 354. [2021-11-07 09:56:40,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 340 states have (on average 1.2941176470588236) internal successors, (440), 353 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:40,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 440 transitions. [2021-11-07 09:56:40,341 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 440 transitions. Word has length 73 [2021-11-07 09:56:40,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:40,342 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 440 transitions. [2021-11-07 09:56:40,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:40,342 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 440 transitions. [2021-11-07 09:56:40,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 09:56:40,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:40,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:40,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 09:56:40,343 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:40,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:40,344 INFO L85 PathProgramCache]: Analyzing trace with hash -89678431, now seen corresponding path program 1 times [2021-11-07 09:56:40,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:40,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994085612] [2021-11-07 09:56:40,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:40,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:40,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:56:40,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:40,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994085612] [2021-11-07 09:56:40,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994085612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:40,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:56:40,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:56:40,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586115366] [2021-11-07 09:56:40,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:40,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:56:40,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:40,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:56:40,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:56:40,398 INFO L87 Difference]: Start difference. First operand 354 states and 440 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:40,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:40,542 INFO L93 Difference]: Finished difference Result 907 states and 1096 transitions. [2021-11-07 09:56:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:56:40,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 09:56:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:40,544 INFO L225 Difference]: With dead ends: 907 [2021-11-07 09:56:40,544 INFO L226 Difference]: Without dead ends: 591 [2021-11-07 09:56:40,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.17ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:56:40,545 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 227 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113.45ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:40,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 1554 Invalid, 167 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [25 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 113.45ms Time] [2021-11-07 09:56:40,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-11-07 09:56:40,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 354. [2021-11-07 09:56:40,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 340 states have (on average 1.2882352941176471) internal successors, (438), 353 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 438 transitions. [2021-11-07 09:56:40,557 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 438 transitions. Word has length 73 [2021-11-07 09:56:40,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:40,557 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 438 transitions. [2021-11-07 09:56:40,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:40,557 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 438 transitions. [2021-11-07 09:56:40,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 09:56:40,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:40,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:40,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 09:56:40,558 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:40,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:40,558 INFO L85 PathProgramCache]: Analyzing trace with hash 565207681, now seen corresponding path program 1 times [2021-11-07 09:56:40,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:40,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882533144] [2021-11-07 09:56:40,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:40,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:40,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 09:56:40,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:40,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882533144] [2021-11-07 09:56:40,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882533144] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:56:40,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997103892] [2021-11-07 09:56:40,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:40,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:56:40,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:56:40,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:56:40,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 09:56:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:40,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-07 09:56:40,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:56:41,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:56:41,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:56:41,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997103892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:56:41,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 09:56:41,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2021-11-07 09:56:41,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337566112] [2021-11-07 09:56:41,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:56:41,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:56:41,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:41,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:56:41,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:56:41,179 INFO L87 Difference]: Start difference. First operand 354 states and 438 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 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) [2021-11-07 09:56:41,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:56:41,684 INFO L93 Difference]: Finished difference Result 1069 states and 1279 transitions. [2021-11-07 09:56:41,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 09:56:41,684 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 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 [2021-11-07 09:56:41,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:56:41,686 INFO L225 Difference]: With dead ends: 1069 [2021-11-07 09:56:41,686 INFO L226 Difference]: Without dead ends: 751 [2021-11-07 09:56:41,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 221.34ms TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2021-11-07 09:56:41,687 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 1508 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 305.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.21ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 355.24ms IncrementalHoareTripleChecker+Time [2021-11-07 09:56:41,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1508 Valid, 2092 Invalid, 411 Unknown, 0 Unchecked, 4.21ms Time], IncrementalHoareTripleChecker [48 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 355.24ms Time] [2021-11-07 09:56:41,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-11-07 09:56:41,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 354. [2021-11-07 09:56:41,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 340 states have (on average 1.2823529411764707) internal successors, (436), 353 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:56:41,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 436 transitions. [2021-11-07 09:56:41,701 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 436 transitions. Word has length 77 [2021-11-07 09:56:41,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:56:41,701 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 436 transitions. [2021-11-07 09:56:41,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 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) [2021-11-07 09:56:41,701 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 436 transitions. [2021-11-07 09:56:41,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 09:56:41,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:56:41,702 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:56:41,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 09:56:41,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-07 09:56:41,921 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:56:41,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:56:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1475756772, now seen corresponding path program 1 times [2021-11-07 09:56:41,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:56:41,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517246994] [2021-11-07 09:56:41,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:41,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:56:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:56:42,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:56:42,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517246994] [2021-11-07 09:56:42,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517246994] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:56:42,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596366403] [2021-11-07 09:56:42,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:56:42,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:56:42,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:56:42,224 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:56:42,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 09:56:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:56:42,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-07 09:56:42,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:56:42,549 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-07 09:56:42,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-07 09:56:42,562 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-07 09:56:42,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 54 [2021-11-07 09:56:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:56:50,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:56:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:56:50,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596366403] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 09:56:50,777 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 09:56:50,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 10] total 36 [2021-11-07 09:56:50,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499207894] [2021-11-07 09:56:50,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 09:56:50,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-07 09:56:50,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:56:50,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-07 09:56:50,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1146, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 09:56:50,779 INFO L87 Difference]: Start difference. First operand 354 states and 436 transitions. Second operand has 36 states, 36 states have (on average 5.75) internal successors, (207), 36 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) [2021-11-07 09:57:00,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:00,005 INFO L93 Difference]: Finished difference Result 2334 states and 2778 transitions. [2021-11-07 09:57:00,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-11-07 09:57:00,006 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.75) internal successors, (207), 36 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) Word has length 79 [2021-11-07 09:57:00,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:00,013 INFO L225 Difference]: With dead ends: 2334 [2021-11-07 09:57:00,013 INFO L226 Difference]: Without dead ends: 2105 [2021-11-07 09:57:00,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3185 ImplicationChecksByTransitivity, 12112.17ms TimeCoverageRelationStatistics Valid=680, Invalid=9826, Unknown=0, NotChecked=0, Total=10506 [2021-11-07 09:57:00,018 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 2011 mSDsluCounter, 22163 mSDsCounter, 0 mSdLazyCounter, 4306 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2443.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 23135 SdHoareTripleChecker+Invalid, 7797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.95ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3424 IncrementalHoareTripleChecker+Unchecked, 2889.35ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:00,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2011 Valid, 23135 Invalid, 7797 Unknown, 0 Unchecked, 42.95ms Time], IncrementalHoareTripleChecker [67 Valid, 4306 Invalid, 0 Unknown, 3424 Unchecked, 2889.35ms Time] [2021-11-07 09:57:00,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2021-11-07 09:57:00,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 526. [2021-11-07 09:57:00,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 512 states have (on average 1.27734375) internal successors, (654), 525 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:00,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 654 transitions. [2021-11-07 09:57:00,056 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 654 transitions. Word has length 79 [2021-11-07 09:57:00,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:00,056 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 654 transitions. [2021-11-07 09:57:00,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.75) internal successors, (207), 36 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) [2021-11-07 09:57:00,057 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 654 transitions. [2021-11-07 09:57:00,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 09:57:00,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:00,058 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:00,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 09:57:00,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 09:57:00,268 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:00,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:00,269 INFO L85 PathProgramCache]: Analyzing trace with hash 378673426, now seen corresponding path program 1 times [2021-11-07 09:57:00,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:00,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949652621] [2021-11-07 09:57:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:00,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:00,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:00,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949652621] [2021-11-07 09:57:00,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949652621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:00,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:57:00,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:57:00,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755244187] [2021-11-07 09:57:00,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:00,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:57:00,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:00,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:57:00,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:57:00,415 INFO L87 Difference]: Start difference. First operand 526 states and 654 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2021-11-07 09:57:00,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:00,946 INFO L93 Difference]: Finished difference Result 1086 states and 1344 transitions. [2021-11-07 09:57:00,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 09:57:00,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 79 [2021-11-07 09:57:00,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:00,949 INFO L225 Difference]: With dead ends: 1086 [2021-11-07 09:57:00,950 INFO L226 Difference]: Without dead ends: 771 [2021-11-07 09:57:00,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 70.12ms TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:57:00,951 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 908 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 357.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.67ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 424.41ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:00,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 1979 Invalid, 450 Unknown, 0 Unchecked, 3.67ms Time], IncrementalHoareTripleChecker [19 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 424.41ms Time] [2021-11-07 09:57:00,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-11-07 09:57:00,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 526. [2021-11-07 09:57:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 512 states have (on average 1.2734375) internal successors, (652), 525 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 652 transitions. [2021-11-07 09:57:00,978 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 652 transitions. Word has length 79 [2021-11-07 09:57:00,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:00,978 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 652 transitions. [2021-11-07 09:57:00,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2021-11-07 09:57:00,979 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 652 transitions. [2021-11-07 09:57:00,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 09:57:00,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:00,979 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:00,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 09:57:00,980 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:00,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:00,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2078239348, now seen corresponding path program 1 times [2021-11-07 09:57:00,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:00,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908627806] [2021-11-07 09:57:00,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:00,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:01,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:01,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:01,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908627806] [2021-11-07 09:57:01,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908627806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:01,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:57:01,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:57:01,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996483231] [2021-11-07 09:57:01,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:01,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:57:01,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:01,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:57:01,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:57:01,227 INFO L87 Difference]: Start difference. First operand 526 states and 652 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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) [2021-11-07 09:57:01,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:01,658 INFO L93 Difference]: Finished difference Result 1018 states and 1271 transitions. [2021-11-07 09:57:01,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:57:01,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 79 [2021-11-07 09:57:01,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:01,662 INFO L225 Difference]: With dead ends: 1018 [2021-11-07 09:57:01,662 INFO L226 Difference]: Without dead ends: 713 [2021-11-07 09:57:01,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 57.33ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:57:01,663 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 826 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 285.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.88ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 331.15ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:01,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1504 Invalid, 272 Unknown, 0 Unchecked, 2.88ms Time], IncrementalHoareTripleChecker [6 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 331.15ms Time] [2021-11-07 09:57:01,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-07 09:57:01,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 526. [2021-11-07 09:57:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 512 states have (on average 1.26953125) internal successors, (650), 525 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:01,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 650 transitions. [2021-11-07 09:57:01,695 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 650 transitions. Word has length 79 [2021-11-07 09:57:01,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:01,695 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 650 transitions. [2021-11-07 09:57:01,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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) [2021-11-07 09:57:01,695 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 650 transitions. [2021-11-07 09:57:01,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 09:57:01,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:01,696 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:01,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 09:57:01,697 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:01,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:01,697 INFO L85 PathProgramCache]: Analyzing trace with hash -2076392306, now seen corresponding path program 1 times [2021-11-07 09:57:01,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:01,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542382148] [2021-11-07 09:57:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:01,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:01,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:01,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:01,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542382148] [2021-11-07 09:57:01,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542382148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:01,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:57:01,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:57:01,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895766909] [2021-11-07 09:57:01,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:01,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:57:01,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:01,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:57:01,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:57:01,933 INFO L87 Difference]: Start difference. First operand 526 states and 650 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2021-11-07 09:57:02,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:02,603 INFO L93 Difference]: Finished difference Result 1048 states and 1302 transitions. [2021-11-07 09:57:02,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 09:57:02,604 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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 79 [2021-11-07 09:57:02,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:02,607 INFO L225 Difference]: With dead ends: 1048 [2021-11-07 09:57:02,607 INFO L226 Difference]: Without dead ends: 741 [2021-11-07 09:57:02,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 97.98ms TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-07 09:57:02,608 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 889 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 471.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.24ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 547.72ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:02,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 2227 Invalid, 554 Unknown, 0 Unchecked, 4.24ms Time], IncrementalHoareTripleChecker [15 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 547.72ms Time] [2021-11-07 09:57:02,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2021-11-07 09:57:02,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 526. [2021-11-07 09:57:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 512 states have (on average 1.265625) internal successors, (648), 525 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 648 transitions. [2021-11-07 09:57:02,653 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 648 transitions. Word has length 79 [2021-11-07 09:57:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:02,653 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 648 transitions. [2021-11-07 09:57:02,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2021-11-07 09:57:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 648 transitions. [2021-11-07 09:57:02,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 09:57:02,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:02,654 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:02,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 09:57:02,654 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:02,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:02,655 INFO L85 PathProgramCache]: Analyzing trace with hash -301384944, now seen corresponding path program 1 times [2021-11-07 09:57:02,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:02,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468065639] [2021-11-07 09:57:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:02,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:02,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:02,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468065639] [2021-11-07 09:57:02,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468065639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:02,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:57:02,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:57:02,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130132880] [2021-11-07 09:57:02,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:02,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:57:02,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:02,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:57:02,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:57:02,813 INFO L87 Difference]: Start difference. First operand 526 states and 648 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2021-11-07 09:57:03,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:03,249 INFO L93 Difference]: Finished difference Result 1024 states and 1273 transitions. [2021-11-07 09:57:03,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 09:57:03,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 79 [2021-11-07 09:57:03,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:03,253 INFO L225 Difference]: With dead ends: 1024 [2021-11-07 09:57:03,253 INFO L226 Difference]: Without dead ends: 713 [2021-11-07 09:57:03,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 64.51ms TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:57:03,254 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 837 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 297.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.88ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 347.00ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:03,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 1892 Invalid, 390 Unknown, 0 Unchecked, 2.88ms Time], IncrementalHoareTripleChecker [11 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 347.00ms Time] [2021-11-07 09:57:03,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-07 09:57:03,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 526. [2021-11-07 09:57:03,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 512 states have (on average 1.26171875) internal successors, (646), 525 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:03,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 646 transitions. [2021-11-07 09:57:03,296 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 646 transitions. Word has length 79 [2021-11-07 09:57:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:03,296 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 646 transitions. [2021-11-07 09:57:03,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2021-11-07 09:57:03,297 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 646 transitions. [2021-11-07 09:57:03,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 09:57:03,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:03,297 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:03,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 09:57:03,298 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:03,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:03,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1079738004, now seen corresponding path program 1 times [2021-11-07 09:57:03,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:03,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558808038] [2021-11-07 09:57:03,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:03,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:03,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:03,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558808038] [2021-11-07 09:57:03,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558808038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:03,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:57:03,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:57:03,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371479011] [2021-11-07 09:57:03,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:03,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:57:03,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:03,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:57:03,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:57:03,392 INFO L87 Difference]: Start difference. First operand 526 states and 646 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 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) [2021-11-07 09:57:03,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:03,590 INFO L93 Difference]: Finished difference Result 1006 states and 1253 transitions. [2021-11-07 09:57:03,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:57:03,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 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 79 [2021-11-07 09:57:03,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:03,592 INFO L225 Difference]: With dead ends: 1006 [2021-11-07 09:57:03,592 INFO L226 Difference]: Without dead ends: 687 [2021-11-07 09:57:03,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 39.58ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:57:03,594 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 1082 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.75ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 132.29ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:03,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 1161 Invalid, 139 Unknown, 0 Unchecked, 1.75ms Time], IncrementalHoareTripleChecker [19 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 132.29ms Time] [2021-11-07 09:57:03,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-11-07 09:57:03,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 508. [2021-11-07 09:57:03,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 494 states have (on average 1.2611336032388665) internal successors, (623), 507 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 623 transitions. [2021-11-07 09:57:03,626 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 623 transitions. Word has length 79 [2021-11-07 09:57:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:03,626 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 623 transitions. [2021-11-07 09:57:03,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 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) [2021-11-07 09:57:03,627 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 623 transitions. [2021-11-07 09:57:03,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 09:57:03,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:03,628 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:03,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 09:57:03,628 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:03,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:03,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1446027407, now seen corresponding path program 1 times [2021-11-07 09:57:03,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:03,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536787203] [2021-11-07 09:57:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:03,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:03,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:03,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536787203] [2021-11-07 09:57:03,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536787203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:03,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:57:03,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:57:03,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466675758] [2021-11-07 09:57:03,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:03,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:57:03,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:03,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:57:03,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:57:03,714 INFO L87 Difference]: Start difference. First operand 508 states and 623 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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) [2021-11-07 09:57:04,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:04,103 INFO L93 Difference]: Finished difference Result 1251 states and 1528 transitions. [2021-11-07 09:57:04,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 09:57:04,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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 81 [2021-11-07 09:57:04,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:04,107 INFO L225 Difference]: With dead ends: 1251 [2021-11-07 09:57:04,107 INFO L226 Difference]: Without dead ends: 948 [2021-11-07 09:57:04,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 99.04ms TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:57:04,108 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 1284 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 215.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.82ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 254.82ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:04,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1284 Valid, 1520 Invalid, 332 Unknown, 0 Unchecked, 2.82ms Time], IncrementalHoareTripleChecker [36 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 254.82ms Time] [2021-11-07 09:57:04,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2021-11-07 09:57:04,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 508. [2021-11-07 09:57:04,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 494 states have (on average 1.2530364372469636) internal successors, (619), 507 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:04,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 619 transitions. [2021-11-07 09:57:04,134 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 619 transitions. Word has length 81 [2021-11-07 09:57:04,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:04,134 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 619 transitions. [2021-11-07 09:57:04,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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) [2021-11-07 09:57:04,134 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 619 transitions. [2021-11-07 09:57:04,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 09:57:04,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:04,135 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:04,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 09:57:04,135 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:04,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:04,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1562028301, now seen corresponding path program 1 times [2021-11-07 09:57:04,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:04,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310380502] [2021-11-07 09:57:04,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:04,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:04,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:04,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310380502] [2021-11-07 09:57:04,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310380502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:04,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:57:04,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:57:04,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306197234] [2021-11-07 09:57:04,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:04,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:57:04,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:04,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:57:04,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:57:04,215 INFO L87 Difference]: Start difference. First operand 508 states and 619 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:04,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:04,735 INFO L93 Difference]: Finished difference Result 1570 states and 1897 transitions. [2021-11-07 09:57:04,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 09:57:04,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-07 09:57:04,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:04,738 INFO L225 Difference]: With dead ends: 1570 [2021-11-07 09:57:04,739 INFO L226 Difference]: Without dead ends: 1265 [2021-11-07 09:57:04,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 93.03ms TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:57:04,740 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 1833 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.66ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 364.58ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:04,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1833 Valid, 2001 Invalid, 472 Unknown, 0 Unchecked, 3.66ms Time], IncrementalHoareTripleChecker [41 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 364.58ms Time] [2021-11-07 09:57:04,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2021-11-07 09:57:04,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 508. [2021-11-07 09:57:04,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 494 states have (on average 1.2449392712550607) internal successors, (615), 507 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 615 transitions. [2021-11-07 09:57:04,766 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 615 transitions. Word has length 83 [2021-11-07 09:57:04,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:04,766 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 615 transitions. [2021-11-07 09:57:04,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:04,766 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 615 transitions. [2021-11-07 09:57:04,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 09:57:04,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:04,767 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:04,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 09:57:04,767 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:04,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:04,768 INFO L85 PathProgramCache]: Analyzing trace with hash -178185581, now seen corresponding path program 1 times [2021-11-07 09:57:04,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:04,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873986504] [2021-11-07 09:57:04,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:04,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:04,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:04,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873986504] [2021-11-07 09:57:04,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873986504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:04,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:57:04,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:57:04,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336298798] [2021-11-07 09:57:04,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:04,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:57:04,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:04,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:57:04,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:57:04,852 INFO L87 Difference]: Start difference. First operand 508 states and 615 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:05,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:05,357 INFO L93 Difference]: Finished difference Result 1572 states and 1892 transitions. [2021-11-07 09:57:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 09:57:05,357 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-07 09:57:05,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:05,361 INFO L225 Difference]: With dead ends: 1572 [2021-11-07 09:57:05,362 INFO L226 Difference]: Without dead ends: 1267 [2021-11-07 09:57:05,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 94.01ms TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:57:05,364 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 1664 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 300.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.89ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 353.99ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:05,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1664 Valid, 2000 Invalid, 470 Unknown, 0 Unchecked, 3.89ms Time], IncrementalHoareTripleChecker [43 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 353.99ms Time] [2021-11-07 09:57:05,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2021-11-07 09:57:05,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 453. [2021-11-07 09:57:05,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 439 states have (on average 1.2232346241457859) internal successors, (537), 452 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:05,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 537 transitions. [2021-11-07 09:57:05,398 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 537 transitions. Word has length 84 [2021-11-07 09:57:05,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:05,398 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 537 transitions. [2021-11-07 09:57:05,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:05,398 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 537 transitions. [2021-11-07 09:57:05,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 09:57:05,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:05,399 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:05,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 09:57:05,400 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:05,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:05,400 INFO L85 PathProgramCache]: Analyzing trace with hash -918714283, now seen corresponding path program 1 times [2021-11-07 09:57:05,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:05,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711873669] [2021-11-07 09:57:05,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:05,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:05,452 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 09:57:05,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:05,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711873669] [2021-11-07 09:57:05,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711873669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:05,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:57:05,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:57:05,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850234744] [2021-11-07 09:57:05,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:05,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:57:05,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:05,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:57:05,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:57:05,454 INFO L87 Difference]: Start difference. First operand 453 states and 537 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:05,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:05,557 INFO L93 Difference]: Finished difference Result 1024 states and 1213 transitions. [2021-11-07 09:57:05,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:57:05,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-07 09:57:05,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:05,559 INFO L225 Difference]: With dead ends: 1024 [2021-11-07 09:57:05,560 INFO L226 Difference]: Without dead ends: 601 [2021-11-07 09:57:05,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.29ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:57:05,561 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 249 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.92ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.44ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:05,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 719 Invalid, 148 Unknown, 0 Unchecked, 0.92ms Time], IncrementalHoareTripleChecker [38 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 69.44ms Time] [2021-11-07 09:57:05,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-11-07 09:57:05,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 431. [2021-11-07 09:57:05,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 417 states have (on average 1.1942446043165467) internal successors, (498), 430 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:05,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 498 transitions. [2021-11-07 09:57:05,583 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 498 transitions. Word has length 88 [2021-11-07 09:57:05,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:05,583 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 498 transitions. [2021-11-07 09:57:05,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:05,583 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 498 transitions. [2021-11-07 09:57:05,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 09:57:05,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:05,584 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:05,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 09:57:05,584 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:05,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:05,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1288449745, now seen corresponding path program 1 times [2021-11-07 09:57:05,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:05,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56780625] [2021-11-07 09:57:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:05,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:57:05,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:05,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56780625] [2021-11-07 09:57:05,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56780625] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:57:05,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267918328] [2021-11-07 09:57:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:05,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:57:05,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:57:05,940 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:57:05,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 09:57:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:06,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-07 09:57:06,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:57:06,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:06,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-07 09:57:06,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:06,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:06,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-07 09:57:07,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-07 09:57:07,256 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-07 09:57:07,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 19 [2021-11-07 09:57:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:57:07,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:57:07,876 INFO L354 Elim1Store]: treesize reduction 55, result has 82.3 percent of original size [2021-11-07 09:57:07,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 2185 treesize of output 2070 [2021-11-07 09:57:07,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2738 treesize of output 2662 [2021-11-07 09:57:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:57:12,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267918328] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 09:57:12,235 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 09:57:12,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 37 [2021-11-07 09:57:12,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623523880] [2021-11-07 09:57:12,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 09:57:12,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-07 09:57:12,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:12,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-07 09:57:12,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1226, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 09:57:12,237 INFO L87 Difference]: Start difference. First operand 431 states and 498 transitions. Second operand has 37 states, 37 states have (on average 5.756756756756757) internal successors, (213), 37 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:16,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:16,756 INFO L93 Difference]: Finished difference Result 1505 states and 1754 transitions. [2021-11-07 09:57:16,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 09:57:16,756 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.756756756756757) internal successors, (213), 37 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-07 09:57:16,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:16,759 INFO L225 Difference]: With dead ends: 1505 [2021-11-07 09:57:16,759 INFO L226 Difference]: Without dead ends: 1183 [2021-11-07 09:57:16,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 2156.55ms TimeCoverageRelationStatistics Valid=464, Invalid=2398, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 09:57:16,760 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 3560 mSDsluCounter, 9023 mSDsCounter, 0 mSdLazyCounter, 4644 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2463.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3560 SdHoareTripleChecker+Valid, 9559 SdHoareTripleChecker+Invalid, 4793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.58ms SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 4644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2882.24ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:16,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3560 Valid, 9559 Invalid, 4793 Unknown, 0 Unchecked, 24.58ms Time], IncrementalHoareTripleChecker [149 Valid, 4644 Invalid, 0 Unknown, 0 Unchecked, 2882.24ms Time] [2021-11-07 09:57:16,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2021-11-07 09:57:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 509. [2021-11-07 09:57:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 495 states have (on average 1.1696969696969697) internal successors, (579), 508 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 579 transitions. [2021-11-07 09:57:16,791 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 579 transitions. Word has length 88 [2021-11-07 09:57:16,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:16,792 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 579 transitions. [2021-11-07 09:57:16,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.756756756756757) internal successors, (213), 37 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:16,793 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 579 transitions. [2021-11-07 09:57:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 09:57:16,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:16,794 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:16,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-07 09:57:17,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:57:17,007 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:17,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:17,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2015935427, now seen corresponding path program 1 times [2021-11-07 09:57:17,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:17,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469984979] [2021-11-07 09:57:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:17,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:17,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:17,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469984979] [2021-11-07 09:57:17,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469984979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:17,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:57:17,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 09:57:17,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454951914] [2021-11-07 09:57:17,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:17,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 09:57:17,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:17,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 09:57:17,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:57:17,244 INFO L87 Difference]: Start difference. First operand 509 states and 579 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:19,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:19,018 INFO L93 Difference]: Finished difference Result 1594 states and 1840 transitions. [2021-11-07 09:57:19,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 09:57:19,018 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-07 09:57:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:19,022 INFO L225 Difference]: With dead ends: 1594 [2021-11-07 09:57:19,022 INFO L226 Difference]: Without dead ends: 1356 [2021-11-07 09:57:19,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 580.92ms TimeCoverageRelationStatistics Valid=411, Invalid=1071, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 09:57:19,028 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 1788 mSDsluCounter, 3764 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 953.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1788 SdHoareTripleChecker+Valid, 4384 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.65ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1109.43ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:19,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1788 Valid, 4384 Invalid, 1611 Unknown, 0 Unchecked, 9.65ms Time], IncrementalHoareTripleChecker [57 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 1109.43ms Time] [2021-11-07 09:57:19,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2021-11-07 09:57:19,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 518. [2021-11-07 09:57:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 504 states have (on average 1.1666666666666667) internal successors, (588), 517 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 588 transitions. [2021-11-07 09:57:19,084 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 588 transitions. Word has length 89 [2021-11-07 09:57:19,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:19,084 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 588 transitions. [2021-11-07 09:57:19,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:19,084 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 588 transitions. [2021-11-07 09:57:19,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 09:57:19,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:19,086 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:19,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-07 09:57:19,086 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:19,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:19,086 INFO L85 PathProgramCache]: Analyzing trace with hash -568652721, now seen corresponding path program 1 times [2021-11-07 09:57:19,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:19,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506881938] [2021-11-07 09:57:19,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:19,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 09:57:19,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:19,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506881938] [2021-11-07 09:57:19,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506881938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:19,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:57:19,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:57:19,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986538768] [2021-11-07 09:57:19,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:19,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:57:19,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:19,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:57:19,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:57:19,363 INFO L87 Difference]: Start difference. First operand 518 states and 588 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:19,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:19,837 INFO L93 Difference]: Finished difference Result 872 states and 1006 transitions. [2021-11-07 09:57:19,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:57:19,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-07 09:57:19,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:19,839 INFO L225 Difference]: With dead ends: 872 [2021-11-07 09:57:19,840 INFO L226 Difference]: Without dead ends: 688 [2021-11-07 09:57:19,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.66ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:57:19,840 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 799 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 312.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.03ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 370.06ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:19,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [799 Valid, 1777 Invalid, 375 Unknown, 0 Unchecked, 3.03ms Time], IncrementalHoareTripleChecker [9 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 370.06ms Time] [2021-11-07 09:57:19,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-11-07 09:57:19,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 518. [2021-11-07 09:57:19,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 504 states have (on average 1.1646825396825398) internal successors, (587), 517 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 587 transitions. [2021-11-07 09:57:19,869 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 587 transitions. Word has length 90 [2021-11-07 09:57:19,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:19,869 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 587 transitions. [2021-11-07 09:57:19,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 587 transitions. [2021-11-07 09:57:19,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 09:57:19,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:19,871 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:19,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-07 09:57:19,871 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:19,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:19,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1949460171, now seen corresponding path program 1 times [2021-11-07 09:57:19,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:19,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268985658] [2021-11-07 09:57:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:19,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 09:57:20,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:20,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268985658] [2021-11-07 09:57:20,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268985658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:20,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:57:20,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:57:20,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034825553] [2021-11-07 09:57:20,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:20,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:57:20,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:20,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:57:20,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:57:20,048 INFO L87 Difference]: Start difference. First operand 518 states and 587 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:20,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:20,413 INFO L93 Difference]: Finished difference Result 868 states and 1001 transitions. [2021-11-07 09:57:20,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 09:57:20,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-07 09:57:20,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:20,415 INFO L225 Difference]: With dead ends: 868 [2021-11-07 09:57:20,415 INFO L226 Difference]: Without dead ends: 687 [2021-11-07 09:57:20,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.30ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:57:20,416 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 779 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 245.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.52ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 280.67ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:20,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 1412 Invalid, 262 Unknown, 0 Unchecked, 2.52ms Time], IncrementalHoareTripleChecker [4 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 280.67ms Time] [2021-11-07 09:57:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-11-07 09:57:20,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 518. [2021-11-07 09:57:20,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 504 states have (on average 1.1626984126984128) internal successors, (586), 517 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:20,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 586 transitions. [2021-11-07 09:57:20,445 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 586 transitions. Word has length 90 [2021-11-07 09:57:20,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:20,446 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 586 transitions. [2021-11-07 09:57:20,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 586 transitions. [2021-11-07 09:57:20,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 09:57:20,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:20,447 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:20,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-07 09:57:20,447 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:20,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:20,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1951307213, now seen corresponding path program 1 times [2021-11-07 09:57:20,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:20,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643456078] [2021-11-07 09:57:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:20,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 09:57:20,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:20,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643456078] [2021-11-07 09:57:20,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643456078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:20,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:57:20,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:57:20,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968371612] [2021-11-07 09:57:20,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:20,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:57:20,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:20,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:57:20,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:57:20,661 INFO L87 Difference]: Start difference. First operand 518 states and 586 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:21,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:21,057 INFO L93 Difference]: Finished difference Result 869 states and 1001 transitions. [2021-11-07 09:57:21,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:57:21,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-07 09:57:21,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:21,067 INFO L225 Difference]: With dead ends: 869 [2021-11-07 09:57:21,067 INFO L226 Difference]: Without dead ends: 687 [2021-11-07 09:57:21,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.76ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:57:21,068 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 782 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 247.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.91ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 290.93ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:21,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 1789 Invalid, 364 Unknown, 0 Unchecked, 2.91ms Time], IncrementalHoareTripleChecker [9 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 290.93ms Time] [2021-11-07 09:57:21,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-11-07 09:57:21,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 518. [2021-11-07 09:57:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 504 states have (on average 1.1607142857142858) internal successors, (585), 517 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 585 transitions. [2021-11-07 09:57:21,111 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 585 transitions. Word has length 90 [2021-11-07 09:57:21,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:21,127 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 585 transitions. [2021-11-07 09:57:21,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:21,127 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 585 transitions. [2021-11-07 09:57:21,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 09:57:21,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:21,128 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:21,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-07 09:57:21,128 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:21,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:21,129 INFO L85 PathProgramCache]: Analyzing trace with hash 111405649, now seen corresponding path program 1 times [2021-11-07 09:57:21,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:21,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169528962] [2021-11-07 09:57:21,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:21,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 09:57:21,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:21,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169528962] [2021-11-07 09:57:21,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169528962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:21,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:57:21,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:57:21,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282318352] [2021-11-07 09:57:21,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:21,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:57:21,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:21,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:57:21,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:57:21,238 INFO L87 Difference]: Start difference. First operand 518 states and 585 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:21,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:21,667 INFO L93 Difference]: Finished difference Result 868 states and 999 transitions. [2021-11-07 09:57:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 09:57:21,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-07 09:57:21,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:21,669 INFO L225 Difference]: With dead ends: 868 [2021-11-07 09:57:21,669 INFO L226 Difference]: Without dead ends: 680 [2021-11-07 09:57:21,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 56.61ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:57:21,670 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 755 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 289.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.67ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 332.73ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:21,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 1771 Invalid, 371 Unknown, 0 Unchecked, 2.67ms Time], IncrementalHoareTripleChecker [25 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 332.73ms Time] [2021-11-07 09:57:21,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-11-07 09:57:21,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 511. [2021-11-07 09:57:21,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 497 states have (on average 1.158953722334004) internal successors, (576), 510 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 576 transitions. [2021-11-07 09:57:21,734 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 576 transitions. Word has length 90 [2021-11-07 09:57:21,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:21,735 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 576 transitions. [2021-11-07 09:57:21,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:21,735 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 576 transitions. [2021-11-07 09:57:21,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 09:57:21,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:21,736 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:21,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-07 09:57:21,736 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:21,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:21,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1079568069, now seen corresponding path program 1 times [2021-11-07 09:57:21,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:21,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571125785] [2021-11-07 09:57:21,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:21,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:21,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:21,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571125785] [2021-11-07 09:57:21,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571125785] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:57:21,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980962918] [2021-11-07 09:57:21,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:21,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:57:21,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:57:21,872 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:57:21,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 09:57:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:22,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-07 09:57:22,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:57:22,171 INFO L354 Elim1Store]: treesize reduction 157, result has 14.2 percent of original size [2021-11-07 09:57:22,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 63 [2021-11-07 09:57:22,198 INFO L354 Elim1Store]: treesize reduction 157, result has 15.1 percent of original size [2021-11-07 09:57:22,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 71 [2021-11-07 09:57:22,848 INFO L354 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2021-11-07 09:57:22,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 102 treesize of output 102 [2021-11-07 09:57:22,869 INFO L354 Elim1Store]: treesize reduction 86, result has 18.1 percent of original size [2021-11-07 09:57:22,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 75 [2021-11-07 09:57:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:22,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:57:23,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:23,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980962918] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 09:57:23,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-07 09:57:23,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 10] total 18 [2021-11-07 09:57:23,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892083757] [2021-11-07 09:57:23,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:23,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:57:23,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:23,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:57:23,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:57:23,071 INFO L87 Difference]: Start difference. First operand 511 states and 576 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:23,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:23,841 INFO L93 Difference]: Finished difference Result 1250 states and 1426 transitions. [2021-11-07 09:57:23,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 09:57:23,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-07 09:57:23,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:23,844 INFO L225 Difference]: With dead ends: 1250 [2021-11-07 09:57:23,844 INFO L226 Difference]: Without dead ends: 1014 [2021-11-07 09:57:23,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 338.57ms TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:57:23,845 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 609 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 507.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.76ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 592.96ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:23,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 1510 Invalid, 795 Unknown, 0 Unchecked, 3.76ms Time], IncrementalHoareTripleChecker [83 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 592.96ms Time] [2021-11-07 09:57:23,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-11-07 09:57:23,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 539. [2021-11-07 09:57:23,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 525 states have (on average 1.1638095238095238) internal successors, (611), 538 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 611 transitions. [2021-11-07 09:57:23,891 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 611 transitions. Word has length 91 [2021-11-07 09:57:23,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:23,891 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 611 transitions. [2021-11-07 09:57:23,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:23,892 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 611 transitions. [2021-11-07 09:57:23,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 09:57:23,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:23,893 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:23,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-07 09:57:24,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:57:24,108 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:24,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:24,108 INFO L85 PathProgramCache]: Analyzing trace with hash 106923265, now seen corresponding path program 1 times [2021-11-07 09:57:24,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:24,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728601066] [2021-11-07 09:57:24,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:24,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 09:57:24,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:24,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728601066] [2021-11-07 09:57:24,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728601066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:24,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:57:24,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:57:24,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814508880] [2021-11-07 09:57:24,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:24,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:57:24,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:24,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:57:24,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:57:24,176 INFO L87 Difference]: Start difference. First operand 539 states and 611 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:24,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:24,444 INFO L93 Difference]: Finished difference Result 868 states and 986 transitions. [2021-11-07 09:57:24,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 09:57:24,445 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-07 09:57:24,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:24,448 INFO L225 Difference]: With dead ends: 868 [2021-11-07 09:57:24,448 INFO L226 Difference]: Without dead ends: 856 [2021-11-07 09:57:24,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 30.86ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:57:24,450 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 513 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 160.54ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:24,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 1602 Invalid, 267 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [31 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 160.54ms Time] [2021-11-07 09:57:24,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-11-07 09:57:24,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 567. [2021-11-07 09:57:24,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 553 states have (on average 1.1555153707052441) internal successors, (639), 566 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:24,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 639 transitions. [2021-11-07 09:57:24,519 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 639 transitions. Word has length 92 [2021-11-07 09:57:24,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:24,519 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 639 transitions. [2021-11-07 09:57:24,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:24,520 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 639 transitions. [2021-11-07 09:57:24,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 09:57:24,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:24,521 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:24,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-07 09:57:24,521 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:24,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:24,523 INFO L85 PathProgramCache]: Analyzing trace with hash -592319472, now seen corresponding path program 1 times [2021-11-07 09:57:24,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:24,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024251326] [2021-11-07 09:57:24,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:24,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 09:57:24,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:24,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024251326] [2021-11-07 09:57:24,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024251326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:24,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:57:24,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:57:24,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365877711] [2021-11-07 09:57:24,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:24,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:57:24,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:24,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:57:24,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:57:24,635 INFO L87 Difference]: Start difference. First operand 567 states and 639 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:25,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:25,015 INFO L93 Difference]: Finished difference Result 1190 states and 1363 transitions. [2021-11-07 09:57:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:57:25,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-07 09:57:25,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:25,027 INFO L225 Difference]: With dead ends: 1190 [2021-11-07 09:57:25,027 INFO L226 Difference]: Without dead ends: 976 [2021-11-07 09:57:25,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 58.62ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:57:25,028 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 1454 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 203.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.94ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 235.23ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:25,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 1090 Invalid, 235 Unknown, 0 Unchecked, 2.94ms Time], IncrementalHoareTripleChecker [26 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 235.23ms Time] [2021-11-07 09:57:25,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-11-07 09:57:25,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 567. [2021-11-07 09:57:25,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 553 states have (on average 1.1537070524412296) internal successors, (638), 566 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 638 transitions. [2021-11-07 09:57:25,091 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 638 transitions. Word has length 92 [2021-11-07 09:57:25,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:25,091 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 638 transitions. [2021-11-07 09:57:25,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:25,092 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 638 transitions. [2021-11-07 09:57:25,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 09:57:25,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:25,093 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:25,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-07 09:57:25,093 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:25,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:25,094 INFO L85 PathProgramCache]: Analyzing trace with hash 44757236, now seen corresponding path program 1 times [2021-11-07 09:57:25,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:25,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106865227] [2021-11-07 09:57:25,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:25,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:25,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:25,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106865227] [2021-11-07 09:57:25,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106865227] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:57:25,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469592430] [2021-11-07 09:57:25,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:25,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:57:25,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:57:25,370 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:57:25,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 09:57:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:25,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-07 09:57:25,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:57:25,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:25,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:25,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:25,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:25,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:25,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:25,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2021-11-07 09:57:25,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:25,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:25,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:25,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:25,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:25,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:25,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2021-11-07 09:57:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 09:57:26,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:57:26,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469592430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:26,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 09:57:26,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [13] total 22 [2021-11-07 09:57:26,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271667441] [2021-11-07 09:57:26,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:26,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 09:57:26,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:26,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 09:57:26,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:57:26,399 INFO L87 Difference]: Start difference. First operand 567 states and 638 transitions. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:29,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:29,554 INFO L93 Difference]: Finished difference Result 1644 states and 1878 transitions. [2021-11-07 09:57:29,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-07 09:57:29,555 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-07 09:57:29,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:29,558 INFO L225 Difference]: With dead ends: 1644 [2021-11-07 09:57:29,558 INFO L226 Difference]: Without dead ends: 1642 [2021-11-07 09:57:29,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3285 ImplicationChecksByTransitivity, 1639.16ms TimeCoverageRelationStatistics Valid=1652, Invalid=7854, Unknown=0, NotChecked=0, Total=9506 [2021-11-07 09:57:29,561 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 2261 mSDsluCounter, 5566 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1272.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2261 SdHoareTripleChecker+Valid, 6298 SdHoareTripleChecker+Invalid, 2439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.08ms SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1479.25ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:29,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2261 Valid, 6298 Invalid, 2439 Unknown, 0 Unchecked, 14.08ms Time], IncrementalHoareTripleChecker [129 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 1479.25ms Time] [2021-11-07 09:57:29,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2021-11-07 09:57:29,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 565. [2021-11-07 09:57:29,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 552 states have (on average 1.1503623188405796) internal successors, (635), 564 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:29,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 635 transitions. [2021-11-07 09:57:29,623 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 635 transitions. Word has length 97 [2021-11-07 09:57:29,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:29,624 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 635 transitions. [2021-11-07 09:57:29,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:29,624 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 635 transitions. [2021-11-07 09:57:29,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 09:57:29,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:29,625 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:29,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 09:57:29,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-07 09:57:29,843 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:29,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:29,844 INFO L85 PathProgramCache]: Analyzing trace with hash -212752875, now seen corresponding path program 1 times [2021-11-07 09:57:29,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:29,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92208899] [2021-11-07 09:57:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:29,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:29,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:29,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92208899] [2021-11-07 09:57:29,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92208899] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:57:29,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793470387] [2021-11-07 09:57:29,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:29,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:57:29,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:57:29,993 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:57:29,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 09:57:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:30,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-07 09:57:30,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:57:30,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2021-11-07 09:57:30,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2021-11-07 09:57:30,874 INFO L354 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2021-11-07 09:57:30,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 126 treesize of output 84 [2021-11-07 09:57:30,899 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-07 09:57:30,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 32 [2021-11-07 09:57:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:30,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:57:31,026 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 09:57:31,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 11300 treesize of output 1 [2021-11-07 09:57:31,034 INFO L354 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2021-11-07 09:57:31,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12854 treesize of output 1 [2021-11-07 09:57:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:31,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793470387] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 09:57:31,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 09:57:31,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 18 [2021-11-07 09:57:31,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041802920] [2021-11-07 09:57:31,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 09:57:31,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 09:57:31,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:31,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 09:57:31,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:57:31,100 INFO L87 Difference]: Start difference. First operand 565 states and 635 transitions. Second operand has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 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) [2021-11-07 09:57:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:33,425 INFO L93 Difference]: Finished difference Result 2109 states and 2416 transitions. [2021-11-07 09:57:33,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-07 09:57:33,425 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 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) Word has length 97 [2021-11-07 09:57:33,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:33,429 INFO L225 Difference]: With dead ends: 2109 [2021-11-07 09:57:33,429 INFO L226 Difference]: Without dead ends: 1803 [2021-11-07 09:57:33,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 1020.66ms TimeCoverageRelationStatistics Valid=475, Invalid=2387, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 09:57:33,431 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 2280 mSDsluCounter, 4634 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1092.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 5074 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.80ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 429 IncrementalHoareTripleChecker+Unchecked, 1262.41ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:33,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2280 Valid, 5074 Invalid, 2462 Unknown, 0 Unchecked, 11.80ms Time], IncrementalHoareTripleChecker [73 Valid, 1960 Invalid, 0 Unknown, 429 Unchecked, 1262.41ms Time] [2021-11-07 09:57:33,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2021-11-07 09:57:33,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 580. [2021-11-07 09:57:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 567 states have (on average 1.1516754850088184) internal successors, (653), 579 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:33,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 653 transitions. [2021-11-07 09:57:33,486 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 653 transitions. Word has length 97 [2021-11-07 09:57:33,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:33,486 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 653 transitions. [2021-11-07 09:57:33,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 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) [2021-11-07 09:57:33,486 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 653 transitions. [2021-11-07 09:57:33,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 09:57:33,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:33,487 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:33,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-07 09:57:33,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-07 09:57:33,703 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:33,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:33,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1022099501, now seen corresponding path program 1 times [2021-11-07 09:57:33,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:33,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970889692] [2021-11-07 09:57:33,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:33,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:33,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:33,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970889692] [2021-11-07 09:57:33,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970889692] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:57:33,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529319310] [2021-11-07 09:57:33,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:33,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:57:33,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:57:33,911 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:57:33,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 09:57:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:34,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-07 09:57:34,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:57:34,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2021-11-07 09:57:34,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2021-11-07 09:57:34,664 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 09:57:34,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 36 treesize of output 19 [2021-11-07 09:57:34,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-11-07 09:57:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:34,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:57:34,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2021-11-07 09:57:34,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2021-11-07 09:57:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:57:34,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529319310] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 09:57:34,961 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 09:57:34,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 6] total 17 [2021-11-07 09:57:34,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679532790] [2021-11-07 09:57:34,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 09:57:34,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 09:57:34,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:34,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 09:57:34,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-11-07 09:57:34,965 INFO L87 Difference]: Start difference. First operand 580 states and 653 transitions. Second operand has 17 states, 17 states have (on average 11.588235294117647) internal successors, (197), 17 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:36,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:36,346 INFO L93 Difference]: Finished difference Result 1423 states and 1623 transitions. [2021-11-07 09:57:36,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 09:57:36,346 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 11.588235294117647) internal successors, (197), 17 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-07 09:57:36,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:36,349 INFO L225 Difference]: With dead ends: 1423 [2021-11-07 09:57:36,349 INFO L226 Difference]: Without dead ends: 1106 [2021-11-07 09:57:36,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 597.57ms TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 09:57:36,351 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 1505 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 708.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.46ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 814.04ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:36,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 2917 Invalid, 1137 Unknown, 0 Unchecked, 7.46ms Time], IncrementalHoareTripleChecker [39 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 814.04ms Time] [2021-11-07 09:57:36,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-11-07 09:57:36,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 519. [2021-11-07 09:57:36,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 508 states have (on average 1.1279527559055118) internal successors, (573), 518 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:36,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 573 transitions. [2021-11-07 09:57:36,408 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 573 transitions. Word has length 97 [2021-11-07 09:57:36,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:36,408 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 573 transitions. [2021-11-07 09:57:36,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.588235294117647) internal successors, (197), 17 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:36,408 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 573 transitions. [2021-11-07 09:57:36,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 09:57:36,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:36,409 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:36,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 09:57:36,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:57:36,613 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:36,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:36,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1344967032, now seen corresponding path program 1 times [2021-11-07 09:57:36,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:36,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204788250] [2021-11-07 09:57:36,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:36,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:36,749 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 09:57:36,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:36,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204788250] [2021-11-07 09:57:36,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204788250] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:57:36,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492897302] [2021-11-07 09:57:36,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:36,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:57:36,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:57:36,758 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:57:36,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 09:57:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:36,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 09:57:36,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:57:36,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-07 09:57:37,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-07 09:57:37,170 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 09:57:37,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:57:37,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492897302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:57:37,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 09:57:37,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 17 [2021-11-07 09:57:37,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602088108] [2021-11-07 09:57:37,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:57:37,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 09:57:37,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:57:37,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 09:57:37,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-11-07 09:57:37,172 INFO L87 Difference]: Start difference. First operand 519 states and 573 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:37,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:57:37,675 INFO L93 Difference]: Finished difference Result 1221 states and 1348 transitions. [2021-11-07 09:57:37,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 09:57:37,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-07 09:57:37,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:57:37,678 INFO L225 Difference]: With dead ends: 1221 [2021-11-07 09:57:37,678 INFO L226 Difference]: Without dead ends: 881 [2021-11-07 09:57:37,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 266.42ms TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 09:57:37,690 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 745 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 206.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.20ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 245.57ms IncrementalHoareTripleChecker+Time [2021-11-07 09:57:37,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 1570 Invalid, 460 Unknown, 0 Unchecked, 3.20ms Time], IncrementalHoareTripleChecker [44 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 245.57ms Time] [2021-11-07 09:57:37,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2021-11-07 09:57:37,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 530. [2021-11-07 09:57:37,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 519 states have (on average 1.1252408477842004) internal successors, (584), 529 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 584 transitions. [2021-11-07 09:57:37,732 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 584 transitions. Word has length 97 [2021-11-07 09:57:37,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:57:37,732 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 584 transitions. [2021-11-07 09:57:37,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:57:37,732 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 584 transitions. [2021-11-07 09:57:37,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 09:57:37,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:57:37,733 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:57:37,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-07 09:57:37,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-07 09:57:37,945 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 09:57:37,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:57:37,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1546790966, now seen corresponding path program 1 times [2021-11-07 09:57:37,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:57:37,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481913990] [2021-11-07 09:57:37,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:37,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:57:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:38,510 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 09:57:38,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:57:38,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481913990] [2021-11-07 09:57:38,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481913990] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:57:38,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410826952] [2021-11-07 09:57:38,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:57:38,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:57:38,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:57:38,512 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:57:38,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 09:57:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:57:38,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-07 09:57:38,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:57:38,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-07 09:57:38,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:38,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:38,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-07 09:57:38,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:38,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-07 09:57:38,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:38,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:38,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 43 [2021-11-07 09:57:38,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:38,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:38,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2021-11-07 09:57:39,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:39,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:39,172 INFO L354 Elim1Store]: treesize reduction 184, result has 30.3 percent of original size [2021-11-07 09:57:39,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 137 treesize of output 174 [2021-11-07 09:57:39,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:39,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:39,253 INFO L354 Elim1Store]: treesize reduction 224, result has 28.2 percent of original size [2021-11-07 09:57:39,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 189 treesize of output 222 [2021-11-07 09:57:50,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:50,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:50,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:50,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:50,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 09:57:50,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:50,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:50,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:50,547 INFO L354 Elim1Store]: treesize reduction 386, result has 39.1 percent of original size [2021-11-07 09:57:50,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 374 treesize of output 508 [2021-11-07 09:57:50,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:50,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:50,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:50,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:50,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 09:57:50,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:50,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:50,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:57:50,735 INFO L354 Elim1Store]: treesize reduction 317, result has 31.7 percent of original size [2021-11-07 09:57:50,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 580 treesize of output 488 Killed by 15