./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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_array_eq_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 c9f60659fbb0886b2c3c86084c4cc81dbedd027936fc1dda43226ecbc4710056 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 09:46:19,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 09:46:19,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 09:46:19,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 09:46:19,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 09:46:19,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 09:46:19,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 09:46:19,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 09:46:19,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 09:46:19,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 09:46:19,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 09:46:19,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 09:46:19,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 09:46:19,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 09:46:19,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 09:46:19,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 09:46:19,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 09:46:19,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 09:46:19,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 09:46:19,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 09:46:19,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 09:46:19,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 09:46:19,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 09:46:19,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 09:46:19,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 09:46:19,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 09:46:19,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 09:46:19,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 09:46:19,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 09:46:19,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 09:46:19,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 09:46:19,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 09:46:19,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 09:46:19,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 09:46:19,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 09:46:19,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 09:46:19,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 09:46:19,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 09:46:19,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 09:46:19,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 09:46:19,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 09:46:19,725 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 09:46:19,753 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 09:46:19,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 09:46:19,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 09:46:19,755 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 09:46:19,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 09:46:19,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 09:46:19,756 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 09:46:19,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 09:46:19,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 09:46:19,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 09:46:19,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 09:46:19,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 09:46:19,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 09:46:19,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 09:46:19,757 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 09:46:19,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 09:46:19,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 09:46:19,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 09:46:19,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 09:46:19,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 09:46:19,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 09:46:19,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 09:46:19,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 09:46:19,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 09:46:19,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 09:46:19,759 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 09:46:19,759 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 09:46:19,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 09:46:19,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 09:46:19,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9f60659fbb0886b2c3c86084c4cc81dbedd027936fc1dda43226ecbc4710056 [2021-11-06 09:46:19,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 09:46:19,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 09:46:19,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 09:46:19,975 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 09:46:19,975 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 09:46:19,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i [2021-11-06 09:46:20,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/941e96e4e/90eb5875716f42788cb4b1b257f040c0/FLAG4264e1126 [2021-11-06 09:46:20,572 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 09:46:20,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i [2021-11-06 09:46:20,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/941e96e4e/90eb5875716f42788cb4b1b257f040c0/FLAG4264e1126 [2021-11-06 09:46:21,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/941e96e4e/90eb5875716f42788cb4b1b257f040c0 [2021-11-06 09:46:21,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 09:46:21,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 09:46:21,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 09:46:21,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 09:46:21,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 09:46:21,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:46:21" (1/1) ... [2021-11-06 09:46:21,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@586fcca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:21, skipping insertion in model container [2021-11-06 09:46:21,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:46:21" (1/1) ... [2021-11-06 09:46:21,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 09:46:21,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 09:46:21,528 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_array_eq_harness.i[4486,4499] [2021-11-06 09:46:21,536 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_array_eq_harness.i[4546,4559] [2021-11-06 09:46:21,562 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 09:46:21,566 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 09:46:22,227 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,228 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,229 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,230 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,231 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,247 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,265 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,266 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,559 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 09:46:22,560 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 09:46:22,561 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 09:46:22,562 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 09:46:22,563 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 09:46:22,563 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 09:46:22,563 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 09:46:22,566 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 09:46:22,566 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 09:46:22,567 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 09:46:22,691 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 09:46:22,781 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,782 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 09:46:22,905 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 09:46:22,922 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_array_eq_harness.i[4486,4499] [2021-11-06 09:46:22,924 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_array_eq_harness.i[4546,4559] [2021-11-06 09:46:22,925 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 09:46:22,926 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 09:46:22,950 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,951 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,951 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,952 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,952 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,957 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,958 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,958 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,958 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,984 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 09:46:22,985 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 09:46:22,985 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 09:46:22,985 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 09:46:22,986 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 09:46:22,986 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 09:46:22,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 09:46:22,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 09:46:22,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 09:46:22,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 09:46:23,005 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 09:46:23,044 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:23,044 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:23,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 09:46:23,236 INFO L208 MainTranslator]: Completed translation [2021-11-06 09:46:23,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:23 WrapperNode [2021-11-06 09:46:23,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 09:46:23,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 09:46:23,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 09:46:23,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 09:46:23,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:23" (1/1) ... [2021-11-06 09:46:23,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:23" (1/1) ... [2021-11-06 09:46:23,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 09:46:23,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 09:46:23,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 09:46:23,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 09:46:23,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:23" (1/1) ... [2021-11-06 09:46:23,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:23" (1/1) ... [2021-11-06 09:46:23,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:23" (1/1) ... [2021-11-06 09:46:23,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:23" (1/1) ... [2021-11-06 09:46:23,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:23" (1/1) ... [2021-11-06 09:46:23,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:23" (1/1) ... [2021-11-06 09:46:23,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:23" (1/1) ... [2021-11-06 09:46:23,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 09:46:23,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 09:46:23,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 09:46:23,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 09:46:23,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:23" (1/1) ... [2021-11-06 09:46:23,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 09:46:23,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 09:46:23,533 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) [2021-11-06 09:46:23,571 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 [2021-11-06 09:46:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 09:46:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 09:46:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 09:46:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 09:46:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 09:46:23,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 09:46:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 09:46:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 09:46:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 09:46:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 09:46:30,295 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 09:46:30,295 INFO L299 CfgBuilder]: Removed 70 assume(true) statements. [2021-11-06 09:46:30,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:46:30 BoogieIcfgContainer [2021-11-06 09:46:30,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 09:46:30,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 09:46:30,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 09:46:30,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 09:46:30,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:46:21" (1/3) ... [2021-11-06 09:46:30,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7613c5ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:46:30, skipping insertion in model container [2021-11-06 09:46:30,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:23" (2/3) ... [2021-11-06 09:46:30,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7613c5ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:46:30, skipping insertion in model container [2021-11-06 09:46:30,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:46:30" (3/3) ... [2021-11-06 09:46:30,303 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_eq_harness.i [2021-11-06 09:46:30,307 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 09:46:30,308 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-06 09:46:30,345 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 09:46:30,350 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 [2021-11-06 09:46:30,351 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-06 09:46:30,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 70 states have (on average 1.5) internal successors, (105), 75 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:30,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-06 09:46:30,365 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:30,366 INFO L513 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] [2021-11-06 09:46:30,366 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:46:30,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:30,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1732530516, now seen corresponding path program 1 times [2021-11-06 09:46:30,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:30,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6624431] [2021-11-06 09:46:30,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:30,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:30,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:30,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:30,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6624431] [2021-11-06 09:46:30,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6624431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:30,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:30,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 09:46:30,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689805833] [2021-11-06 09:46:30,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 09:46:30,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:30,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 09:46:30,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 09:46:30,793 INFO L87 Difference]: Start difference. First operand has 76 states, 70 states have (on average 1.5) internal successors, (105), 75 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:30,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:30,806 INFO L93 Difference]: Finished difference Result 149 states and 206 transitions. [2021-11-06 09:46:30,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 09:46:30,807 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-06 09:46:30,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:30,813 INFO L225 Difference]: With dead ends: 149 [2021-11-06 09:46:30,813 INFO L226 Difference]: Without dead ends: 70 [2021-11-06 09:46:30,815 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 09:46:30,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-06 09:46:30,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-06 09:46:30,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 69 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) [2021-11-06 09:46:30,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2021-11-06 09:46:30,839 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 27 [2021-11-06 09:46:30,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:30,840 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2021-11-06 09:46:30,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:30,840 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2021-11-06 09:46:30,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-06 09:46:30,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:30,841 INFO L513 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] [2021-11-06 09:46:30,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 09:46:30,842 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:46:30,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:30,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1816035494, now seen corresponding path program 1 times [2021-11-06 09:46:30,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:30,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996099044] [2021-11-06 09:46:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:30,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:31,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:31,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:31,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996099044] [2021-11-06 09:46:31,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996099044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:31,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:31,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 09:46:31,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199597363] [2021-11-06 09:46:31,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 09:46:31,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:31,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 09:46:31,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 09:46:31,254 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:31,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:31,330 INFO L93 Difference]: Finished difference Result 109 states and 125 transitions. [2021-11-06 09:46:31,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 09:46:31,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-06 09:46:31,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:31,332 INFO L225 Difference]: With dead ends: 109 [2021-11-06 09:46:31,332 INFO L226 Difference]: Without dead ends: 83 [2021-11-06 09:46:31,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 09:46:31,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-06 09:46:31,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 72. [2021-11-06 09:46:31,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 71 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2021-11-06 09:46:31,338 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 27 [2021-11-06 09:46:31,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:31,339 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2021-11-06 09:46:31,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:31,339 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2021-11-06 09:46:31,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-06 09:46:31,340 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:31,340 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 09:46:31,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 09:46:31,341 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:46:31,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:31,341 INFO L85 PathProgramCache]: Analyzing trace with hash 515997540, now seen corresponding path program 1 times [2021-11-06 09:46:31,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:31,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088548767] [2021-11-06 09:46:31,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:31,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:32,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:32,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088548767] [2021-11-06 09:46:32,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088548767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:32,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:32,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 09:46:32,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174814778] [2021-11-06 09:46:32,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 09:46:32,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:32,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 09:46:32,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-06 09:46:32,540 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:34,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:34,104 INFO L93 Difference]: Finished difference Result 261 states and 304 transitions. [2021-11-06 09:46:34,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 09:46:34,105 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-06 09:46:34,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:34,106 INFO L225 Difference]: With dead ends: 261 [2021-11-06 09:46:34,106 INFO L226 Difference]: Without dead ends: 207 [2021-11-06 09:46:34,107 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-11-06 09:46:34,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-06 09:46:34,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 112. [2021-11-06 09:46:34,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.2149532710280373) internal successors, (130), 111 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:34,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2021-11-06 09:46:34,126 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 28 [2021-11-06 09:46:34,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:34,126 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2021-11-06 09:46:34,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:34,127 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2021-11-06 09:46:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-06 09:46:34,128 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:34,129 INFO L513 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] [2021-11-06 09:46:34,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 09:46:34,130 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:46:34,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:34,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1584995081, now seen corresponding path program 1 times [2021-11-06 09:46:34,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:34,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294172784] [2021-11-06 09:46:34,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:34,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:35,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:35,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294172784] [2021-11-06 09:46:35,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294172784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:35,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:35,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 09:46:35,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685339026] [2021-11-06 09:46:35,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 09:46:35,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:35,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 09:46:35,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-06 09:46:35,679 INFO L87 Difference]: Start difference. First operand 112 states and 130 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:39,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:39,659 INFO L93 Difference]: Finished difference Result 302 states and 347 transitions. [2021-11-06 09:46:39,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-06 09:46:39,660 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-06 09:46:39,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:39,661 INFO L225 Difference]: With dead ends: 302 [2021-11-06 09:46:39,661 INFO L226 Difference]: Without dead ends: 253 [2021-11-06 09:46:39,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2021-11-06 09:46:39,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-06 09:46:39,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 139. [2021-11-06 09:46:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 134 states have (on average 1.208955223880597) internal successors, (162), 138 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2021-11-06 09:46:39,671 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 31 [2021-11-06 09:46:39,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:39,671 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2021-11-06 09:46:39,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:39,671 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2021-11-06 09:46:39,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-06 09:46:39,672 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:39,672 INFO L513 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] [2021-11-06 09:46:39,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 09:46:39,673 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:46:39,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:39,673 INFO L85 PathProgramCache]: Analyzing trace with hash -693621156, now seen corresponding path program 1 times [2021-11-06 09:46:39,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:39,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056510317] [2021-11-06 09:46:39,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:39,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:40,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:40,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056510317] [2021-11-06 09:46:40,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056510317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:40,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:40,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 09:46:40,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717481844] [2021-11-06 09:46:40,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 09:46:40,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:40,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 09:46:40,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-06 09:46:40,956 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:44,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:44,895 INFO L93 Difference]: Finished difference Result 311 states and 352 transitions. [2021-11-06 09:46:44,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-06 09:46:44,895 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-06 09:46:44,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:44,896 INFO L225 Difference]: With dead ends: 311 [2021-11-06 09:46:44,896 INFO L226 Difference]: Without dead ends: 270 [2021-11-06 09:46:44,897 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=204, Invalid=498, Unknown=0, NotChecked=0, Total=702 [2021-11-06 09:46:44,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-06 09:46:44,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 140. [2021-11-06 09:46:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.1925925925925926) internal successors, (161), 139 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:44,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 161 transitions. [2021-11-06 09:46:44,904 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 161 transitions. Word has length 34 [2021-11-06 09:46:44,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:44,905 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 161 transitions. [2021-11-06 09:46:44,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:44,905 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 161 transitions. [2021-11-06 09:46:44,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-06 09:46:44,906 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:44,906 INFO L513 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] [2021-11-06 09:46:44,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 09:46:44,907 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:46:44,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:44,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1814533261, now seen corresponding path program 1 times [2021-11-06 09:46:44,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:44,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418332438] [2021-11-06 09:46:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:44,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:45,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:45,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418332438] [2021-11-06 09:46:45,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418332438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:45,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:45,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 09:46:45,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340425755] [2021-11-06 09:46:45,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 09:46:45,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:45,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 09:46:45,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 09:46:45,433 INFO L87 Difference]: Start difference. First operand 140 states and 161 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:45,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:45,877 INFO L93 Difference]: Finished difference Result 192 states and 221 transitions. [2021-11-06 09:46:45,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 09:46:45,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-06 09:46:45,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:45,879 INFO L225 Difference]: With dead ends: 192 [2021-11-06 09:46:45,879 INFO L226 Difference]: Without dead ends: 148 [2021-11-06 09:46:45,879 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 09:46:45,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-06 09:46:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 140. [2021-11-06 09:46:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.1703703703703703) internal successors, (158), 139 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:45,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 158 transitions. [2021-11-06 09:46:45,884 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 158 transitions. Word has length 34 [2021-11-06 09:46:45,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:45,884 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 158 transitions. [2021-11-06 09:46:45,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:45,885 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 158 transitions. [2021-11-06 09:46:45,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-06 09:46:45,885 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:45,885 INFO L513 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] [2021-11-06 09:46:45,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 09:46:45,885 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:46:45,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:45,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1816380303, now seen corresponding path program 1 times [2021-11-06 09:46:45,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:45,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67624886] [2021-11-06 09:46:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:45,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:46,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:46,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67624886] [2021-11-06 09:46:46,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67624886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:46,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:46,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 09:46:46,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713573670] [2021-11-06 09:46:46,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 09:46:46,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:46,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 09:46:46,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 09:46:46,596 INFO L87 Difference]: Start difference. First operand 140 states and 158 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:48,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:48,132 INFO L93 Difference]: Finished difference Result 236 states and 260 transitions. [2021-11-06 09:46:48,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 09:46:48,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-06 09:46:48,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:48,136 INFO L225 Difference]: With dead ends: 236 [2021-11-06 09:46:48,136 INFO L226 Difference]: Without dead ends: 222 [2021-11-06 09:46:48,137 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-11-06 09:46:48,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-06 09:46:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 135. [2021-11-06 09:46:48,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.1538461538461537) internal successors, (150), 134 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:48,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions. [2021-11-06 09:46:48,148 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 34 [2021-11-06 09:46:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:48,148 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 150 transitions. [2021-11-06 09:46:48,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:48,148 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions. [2021-11-06 09:46:48,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-06 09:46:48,152 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:48,152 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 09:46:48,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 09:46:48,153 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:46:48,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:48,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1600106888, now seen corresponding path program 1 times [2021-11-06 09:46:48,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:48,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228003434] [2021-11-06 09:46:48,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:48,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:48,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:48,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:48,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228003434] [2021-11-06 09:46:48,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228003434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:48,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:48,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 09:46:48,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509567681] [2021-11-06 09:46:48,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 09:46:48,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:48,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 09:46:48,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 09:46:48,508 INFO L87 Difference]: Start difference. First operand 135 states and 150 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:48,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:48,688 INFO L93 Difference]: Finished difference Result 212 states and 236 transitions. [2021-11-06 09:46:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 09:46:48,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-06 09:46:48,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:48,689 INFO L225 Difference]: With dead ends: 212 [2021-11-06 09:46:48,689 INFO L226 Difference]: Without dead ends: 182 [2021-11-06 09:46:48,690 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 09:46:48,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-06 09:46:48,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 173. [2021-11-06 09:46:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 168 states have (on average 1.1666666666666667) internal successors, (196), 172 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:48,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 196 transitions. [2021-11-06 09:46:48,697 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 196 transitions. Word has length 36 [2021-11-06 09:46:48,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:48,697 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 196 transitions. [2021-11-06 09:46:48,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:48,697 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 196 transitions. [2021-11-06 09:46:48,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-06 09:46:48,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:48,699 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 09:46:48,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 09:46:48,700 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:46:48,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:48,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1157582708, now seen corresponding path program 1 times [2021-11-06 09:46:48,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:48,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910573373] [2021-11-06 09:46:48,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:48,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:50,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:50,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910573373] [2021-11-06 09:46:50,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910573373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:50,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:50,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 09:46:50,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666964466] [2021-11-06 09:46:50,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 09:46:50,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:50,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 09:46:50,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-06 09:46:50,267 INFO L87 Difference]: Start difference. First operand 173 states and 196 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:54,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:54,014 INFO L93 Difference]: Finished difference Result 239 states and 262 transitions. [2021-11-06 09:46:54,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-06 09:46:54,017 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-06 09:46:54,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:54,018 INFO L225 Difference]: With dead ends: 239 [2021-11-06 09:46:54,018 INFO L226 Difference]: Without dead ends: 197 [2021-11-06 09:46:54,018 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-11-06 09:46:54,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-06 09:46:54,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 173. [2021-11-06 09:46:54,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 168 states have (on average 1.1547619047619047) internal successors, (194), 172 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:54,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 194 transitions. [2021-11-06 09:46:54,023 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 194 transitions. Word has length 37 [2021-11-06 09:46:54,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:54,023 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 194 transitions. [2021-11-06 09:46:54,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 194 transitions. [2021-11-06 09:46:54,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-06 09:46:54,023 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:54,023 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 09:46:54,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 09:46:54,024 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:46:54,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:54,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2104421696, now seen corresponding path program 1 times [2021-11-06 09:46:54,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:54,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224017351] [2021-11-06 09:46:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:54,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:56,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:56,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224017351] [2021-11-06 09:46:56,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224017351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:56,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:56,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 09:46:56,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052253139] [2021-11-06 09:46:56,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 09:46:56,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:56,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 09:46:56,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 09:46:56,583 INFO L87 Difference]: Start difference. First operand 173 states and 194 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:56,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:56,910 INFO L93 Difference]: Finished difference Result 203 states and 225 transitions. [2021-11-06 09:46:56,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 09:46:56,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-06 09:46:56,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:56,911 INFO L225 Difference]: With dead ends: 203 [2021-11-06 09:46:56,911 INFO L226 Difference]: Without dead ends: 190 [2021-11-06 09:46:56,912 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-06 09:46:56,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-06 09:46:56,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 171. [2021-11-06 09:46:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 166 states have (on average 1.1506024096385543) internal successors, (191), 170 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:56,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 191 transitions. [2021-11-06 09:46:56,918 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 191 transitions. Word has length 38 [2021-11-06 09:46:56,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:56,918 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 191 transitions. [2021-11-06 09:46:56,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:46:56,919 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 191 transitions. [2021-11-06 09:46:56,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-06 09:46:56,919 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:56,919 INFO L513 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] [2021-11-06 09:46:56,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 09:46:56,920 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:46:56,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:56,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1059303570, now seen corresponding path program 1 times [2021-11-06 09:46:56,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:56,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663353750] [2021-11-06 09:46:56,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:56,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:47:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:47:55,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:47:55,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:47:55,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663353750] [2021-11-06 09:47:55,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663353750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:47:55,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:47:55,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-06 09:47:55,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293852146] [2021-11-06 09:47:55,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-06 09:47:55,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:47:55,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-06 09:47:55,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-11-06 09:47:55,707 INFO L87 Difference]: Start difference. First operand 171 states and 191 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:15,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:48:15,874 INFO L93 Difference]: Finished difference Result 207 states and 224 transitions. [2021-11-06 09:48:15,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-06 09:48:15,875 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-06 09:48:15,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:48:15,876 INFO L225 Difference]: With dead ends: 207 [2021-11-06 09:48:15,876 INFO L226 Difference]: Without dead ends: 205 [2021-11-06 09:48:15,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2021-11-06 09:48:15,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-06 09:48:15,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 180. [2021-11-06 09:48:15,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 175 states have (on average 1.16) internal successors, (203), 179 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 203 transitions. [2021-11-06 09:48:15,881 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 203 transitions. Word has length 39 [2021-11-06 09:48:15,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:48:15,882 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 203 transitions. [2021-11-06 09:48:15,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:15,882 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 203 transitions. [2021-11-06 09:48:15,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-06 09:48:15,882 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:48:15,882 INFO L513 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] [2021-11-06 09:48:15,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 09:48:15,883 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:48:15,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:48:15,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1520474377, now seen corresponding path program 1 times [2021-11-06 09:48:15,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:48:15,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411324433] [2021-11-06 09:48:15,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:48:15,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:48:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:48:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:48:16,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:48:16,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411324433] [2021-11-06 09:48:16,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411324433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:48:16,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:48:16,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 09:48:16,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911707518] [2021-11-06 09:48:16,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 09:48:16,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:48:16,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 09:48:16,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-06 09:48:16,559 INFO L87 Difference]: Start difference. First operand 180 states and 203 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:17,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:48:17,706 INFO L93 Difference]: Finished difference Result 249 states and 271 transitions. [2021-11-06 09:48:17,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 09:48:17,707 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-06 09:48:17,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:48:17,708 INFO L225 Difference]: With dead ends: 249 [2021-11-06 09:48:17,708 INFO L226 Difference]: Without dead ends: 231 [2021-11-06 09:48:17,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-06 09:48:17,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-06 09:48:17,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 194. [2021-11-06 09:48:17,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.164021164021164) internal successors, (220), 193 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 220 transitions. [2021-11-06 09:48:17,753 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 220 transitions. Word has length 39 [2021-11-06 09:48:17,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:48:17,754 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 220 transitions. [2021-11-06 09:48:17,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:17,755 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 220 transitions. [2021-11-06 09:48:17,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 09:48:17,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:48:17,755 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 09:48:17,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 09:48:17,756 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:48:17,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:48:17,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1653601109, now seen corresponding path program 1 times [2021-11-06 09:48:17,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:48:17,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730218891] [2021-11-06 09:48:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:48:17,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:48:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:48:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:48:18,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:48:18,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730218891] [2021-11-06 09:48:18,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730218891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:48:18,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:48:18,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 09:48:18,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797494393] [2021-11-06 09:48:18,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 09:48:18,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:48:18,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 09:48:18,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-06 09:48:18,586 INFO L87 Difference]: Start difference. First operand 194 states and 220 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:19,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:48:19,792 INFO L93 Difference]: Finished difference Result 219 states and 243 transitions. [2021-11-06 09:48:19,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 09:48:19,793 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-06 09:48:19,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:48:19,794 INFO L225 Difference]: With dead ends: 219 [2021-11-06 09:48:19,794 INFO L226 Difference]: Without dead ends: 196 [2021-11-06 09:48:19,794 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-11-06 09:48:19,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-06 09:48:19,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 189. [2021-11-06 09:48:19,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 184 states have (on average 1.1521739130434783) internal successors, (212), 188 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:19,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 212 transitions. [2021-11-06 09:48:19,800 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 212 transitions. Word has length 40 [2021-11-06 09:48:19,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:48:19,801 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 212 transitions. [2021-11-06 09:48:19,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:19,801 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 212 transitions. [2021-11-06 09:48:19,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 09:48:19,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:48:19,802 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 09:48:19,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 09:48:19,802 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:48:19,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:48:19,802 INFO L85 PathProgramCache]: Analyzing trace with hash 691844793, now seen corresponding path program 1 times [2021-11-06 09:48:19,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:48:19,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212749837] [2021-11-06 09:48:19,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:48:19,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:48:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:48:20,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:48:20,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:48:20,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212749837] [2021-11-06 09:48:20,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212749837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:48:20,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:48:20,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 09:48:20,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649993530] [2021-11-06 09:48:20,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 09:48:20,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:48:20,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 09:48:20,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-06 09:48:20,329 INFO L87 Difference]: Start difference. First operand 189 states and 212 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:21,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:48:21,120 INFO L93 Difference]: Finished difference Result 217 states and 232 transitions. [2021-11-06 09:48:21,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 09:48:21,121 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-06 09:48:21,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:48:21,121 INFO L225 Difference]: With dead ends: 217 [2021-11-06 09:48:21,121 INFO L226 Difference]: Without dead ends: 194 [2021-11-06 09:48:21,122 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-06 09:48:21,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-06 09:48:21,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 168. [2021-11-06 09:48:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.1288343558282208) internal successors, (184), 167 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) [2021-11-06 09:48:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 184 transitions. [2021-11-06 09:48:21,126 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 184 transitions. Word has length 40 [2021-11-06 09:48:21,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:48:21,127 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 184 transitions. [2021-11-06 09:48:21,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:21,127 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 184 transitions. [2021-11-06 09:48:21,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 09:48:21,128 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:48:21,128 INFO L513 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] [2021-11-06 09:48:21,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 09:48:21,129 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:48:21,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:48:21,129 INFO L85 PathProgramCache]: Analyzing trace with hash 94110528, now seen corresponding path program 1 times [2021-11-06 09:48:21,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:48:21,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815835705] [2021-11-06 09:48:21,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:48:21,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:48:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:48:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:48:21,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:48:21,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815835705] [2021-11-06 09:48:21,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815835705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:48:21,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:48:21,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 09:48:21,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420347276] [2021-11-06 09:48:21,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 09:48:21,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:48:21,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 09:48:21,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-06 09:48:21,639 INFO L87 Difference]: Start difference. First operand 168 states and 184 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:22,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:48:22,437 INFO L93 Difference]: Finished difference Result 195 states and 208 transitions. [2021-11-06 09:48:22,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 09:48:22,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-06 09:48:22,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:48:22,438 INFO L225 Difference]: With dead ends: 195 [2021-11-06 09:48:22,438 INFO L226 Difference]: Without dead ends: 190 [2021-11-06 09:48:22,438 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-11-06 09:48:22,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-06 09:48:22,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 168. [2021-11-06 09:48:22,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.116564417177914) internal successors, (182), 167 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 182 transitions. [2021-11-06 09:48:22,444 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 182 transitions. Word has length 41 [2021-11-06 09:48:22,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:48:22,444 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 182 transitions. [2021-11-06 09:48:22,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 182 transitions. [2021-11-06 09:48:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 09:48:22,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:48:22,446 INFO L513 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] [2021-11-06 09:48:22,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 09:48:22,446 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:48:22,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:48:22,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1947021686, now seen corresponding path program 1 times [2021-11-06 09:48:22,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:48:22,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234346597] [2021-11-06 09:48:22,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:48:22,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:48:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:48:40,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:48:40,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:48:40,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234346597] [2021-11-06 09:48:40,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234346597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:48:40,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:48:40,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 09:48:40,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381922185] [2021-11-06 09:48:40,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 09:48:40,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:48:40,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 09:48:40,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-06 09:48:40,171 INFO L87 Difference]: Start difference. First operand 168 states and 182 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:56,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:48:56,944 INFO L93 Difference]: Finished difference Result 222 states and 234 transitions. [2021-11-06 09:48:56,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-06 09:48:56,944 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-06 09:48:56,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:48:56,946 INFO L225 Difference]: With dead ends: 222 [2021-11-06 09:48:56,946 INFO L226 Difference]: Without dead ends: 192 [2021-11-06 09:48:56,947 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2021-11-06 09:48:56,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-06 09:48:56,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 170. [2021-11-06 09:48:56,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.1090909090909091) internal successors, (183), 169 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 183 transitions. [2021-11-06 09:48:56,953 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 183 transitions. Word has length 41 [2021-11-06 09:48:56,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:48:56,953 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 183 transitions. [2021-11-06 09:48:56,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:56,953 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 183 transitions. [2021-11-06 09:48:56,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 09:48:56,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:48:56,954 INFO L513 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] [2021-11-06 09:48:56,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 09:48:56,954 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:48:56,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:48:56,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1696696410, now seen corresponding path program 1 times [2021-11-06 09:48:56,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:48:56,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284543313] [2021-11-06 09:48:56,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:48:56,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:48:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:48:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:48:57,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:48:57,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284543313] [2021-11-06 09:48:57,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284543313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:48:57,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:48:57,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 09:48:57,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712236570] [2021-11-06 09:48:57,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 09:48:57,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:48:57,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 09:48:57,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-06 09:48:57,606 INFO L87 Difference]: Start difference. First operand 170 states and 183 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:59,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:48:59,266 INFO L93 Difference]: Finished difference Result 240 states and 254 transitions. [2021-11-06 09:48:59,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-06 09:48:59,267 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-06 09:48:59,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:48:59,268 INFO L225 Difference]: With dead ends: 240 [2021-11-06 09:48:59,268 INFO L226 Difference]: Without dead ends: 214 [2021-11-06 09:48:59,268 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2021-11-06 09:48:59,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-06 09:48:59,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 193. [2021-11-06 09:48:59,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 188 states have (on average 1.1170212765957446) internal successors, (210), 192 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:59,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 210 transitions. [2021-11-06 09:48:59,274 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 210 transitions. Word has length 41 [2021-11-06 09:48:59,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:48:59,274 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 210 transitions. [2021-11-06 09:48:59,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:48:59,274 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 210 transitions. [2021-11-06 09:48:59,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 09:48:59,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:48:59,274 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 09:48:59,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 09:48:59,275 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:48:59,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:48:59,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1833906296, now seen corresponding path program 1 times [2021-11-06 09:48:59,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:48:59,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338536132] [2021-11-06 09:48:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:48:59,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:49:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:49:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:49:23,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:49:23,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338536132] [2021-11-06 09:49:23,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338536132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:49:23,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:49:23,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 09:49:23,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047168935] [2021-11-06 09:49:23,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 09:49:23,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:49:23,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 09:49:23,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-06 09:49:23,541 INFO L87 Difference]: Start difference. First operand 193 states and 210 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:49:39,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:49:39,697 INFO L93 Difference]: Finished difference Result 203 states and 217 transitions. [2021-11-06 09:49:39,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 09:49:39,698 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-06 09:49:39,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:49:39,698 INFO L225 Difference]: With dead ends: 203 [2021-11-06 09:49:39,698 INFO L226 Difference]: Without dead ends: 162 [2021-11-06 09:49:39,699 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2021-11-06 09:49:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-06 09:49:39,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 152. [2021-11-06 09:49:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.0952380952380953) internal successors, (161), 151 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:49:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 161 transitions. [2021-11-06 09:49:39,704 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 161 transitions. Word has length 42 [2021-11-06 09:49:39,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:49:39,704 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 161 transitions. [2021-11-06 09:49:39,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:49:39,704 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 161 transitions. [2021-11-06 09:49:39,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 09:49:39,704 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:49:39,704 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 09:49:39,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 09:49:39,705 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 09:49:39,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:49:39,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1252880233, now seen corresponding path program 1 times [2021-11-06 09:49:39,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:49:39,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654404182] [2021-11-06 09:49:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:49:39,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:49:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:50:32,553 WARN L207 SmtUtils]: Spent 16.87 s on a formula simplification that was a NOOP. DAG size: 181 [2021-11-06 09:51:08,411 WARN L207 SmtUtils]: Spent 15.53 s on a formula simplification that was a NOOP. DAG size: 167 [2021-11-06 09:51:45,892 WARN L207 SmtUtils]: Spent 13.53 s on a formula simplification that was a NOOP. DAG size: 164 [2021-11-06 09:52:11,370 WARN L207 SmtUtils]: Spent 14.59 s on a formula simplification that was a NOOP. DAG size: 165 [2021-11-06 09:52:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:52:11,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:52:11,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654404182] [2021-11-06 09:52:11,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654404182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:52:11,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:52:11,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-06 09:52:11,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289198239] [2021-11-06 09:52:11,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-06 09:52:11,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:52:11,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-06 09:52:11,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=231, Unknown=2, NotChecked=0, Total=272 [2021-11-06 09:52:11,484 INFO L87 Difference]: Start difference. First operand 152 states and 161 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:53:17,409 WARN L207 SmtUtils]: Spent 46.93 s on a formula simplification. DAG size of input: 223 DAG size of output: 213 [2021-11-06 09:54:53,043 WARN L207 SmtUtils]: Spent 1.02 m on a formula simplification. DAG size of input: 228 DAG size of output: 218 Killed by 15