./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 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_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-wip.dd.seqcomp-5f08f0f [2021-11-05 11:46:25,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 11:46:25,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 11:46:25,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 11:46:25,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 11:46:25,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 11:46:25,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 11:46:25,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 11:46:25,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 11:46:25,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 11:46:25,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 11:46:25,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 11:46:25,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 11:46:25,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 11:46:25,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 11:46:25,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 11:46:25,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 11:46:25,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 11:46:25,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 11:46:26,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 11:46:26,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 11:46:26,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 11:46:26,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 11:46:26,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 11:46:26,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 11:46:26,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 11:46:26,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 11:46:26,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 11:46:26,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 11:46:26,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 11:46:26,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 11:46:26,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 11:46:26,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 11:46:26,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 11:46:26,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 11:46:26,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 11:46:26,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 11:46:26,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 11:46:26,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 11:46:26,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 11:46:26,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 11:46:26,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 11:46:26,061 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 11:46:26,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 11:46:26,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 11:46:26,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 11:46:26,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 11:46:26,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 11:46:26,063 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 11:46:26,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 11:46:26,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 11:46:26,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 11:46:26,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 11:46:26,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 11:46:26,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 11:46:26,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 11:46:26,064 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 11:46:26,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 11:46:26,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 11:46:26,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 11:46:26,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 11:46:26,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 11:46:26,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 11:46:26,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 11:46:26,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 11:46:26,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 11:46:26,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 11:46:26,064 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 11:46:26,065 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 11:46:26,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 11:46:26,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 11:46:26,065 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9f60659fbb0886b2c3c86084c4cc81dbedd027936fc1dda43226ecbc4710056 [2021-11-05 11:46:26,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 11:46:26,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 11:46:26,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 11:46:26,339 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 11:46:26,340 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 11:46:26,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i [2021-11-05 11:46:26,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d81d9fc0/7e09582226b944338c1f1a6d96a87e97/FLAG07e8b456f [2021-11-05 11:46:26,949 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 11:46:26,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i [2021-11-05 11:46:26,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d81d9fc0/7e09582226b944338c1f1a6d96a87e97/FLAG07e8b456f [2021-11-05 11:46:27,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d81d9fc0/7e09582226b944338c1f1a6d96a87e97 [2021-11-05 11:46:27,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 11:46:27,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 11:46:27,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 11:46:27,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 11:46:27,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 11:46:27,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 11:46:27" (1/1) ... [2021-11-05 11:46:27,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c194374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:27, skipping insertion in model container [2021-11-05 11:46:27,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 11:46:27" (1/1) ... [2021-11-05 11:46:27,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 11:46:27,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 11:46:27,428 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] [2021-11-05 11:46:27,436 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] [2021-11-05 11:46:27,468 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 11:46:27,472 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 11:46:27,956 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,956 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,957 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,957 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,958 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,966 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,969 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,972 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,235 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 11:46:28,236 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 11:46:28,242 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 11:46:28,243 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 11:46:28,244 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 11:46:28,245 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 11:46:28,245 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 11:46:28,245 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 11:46:28,246 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 11:46:28,246 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 11:46:28,350 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 11:46:28,400 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,401 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 11:46:28,462 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 11:46:28,471 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] [2021-11-05 11:46:28,471 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] [2021-11-05 11:46:28,472 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 11:46:28,473 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 11:46:28,516 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,516 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,516 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,517 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,517 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,521 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,521 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,522 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,522 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,540 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 11:46:28,541 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 11:46:28,541 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 11:46:28,542 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 11:46:28,542 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 11:46:28,543 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 11:46:28,543 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 11:46:28,543 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 11:46:28,543 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 11:46:28,544 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 11:46:28,555 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 11:46:28,584 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,584 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 11:46:28,840 INFO L208 MainTranslator]: Completed translation [2021-11-05 11:46:28,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28 WrapperNode [2021-11-05 11:46:28,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 11:46:28,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 11:46:28,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 11:46:28,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 11:46:28,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:29,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 11:46:29,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 11:46:29,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 11:46:29,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 11:46:29,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:29,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:29,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:29,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:29,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:29,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:29,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:29,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 11:46:29,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 11:46:29,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 11:46:29,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 11:46:29,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:29,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 11:46:29,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:46:29,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 11:46:29,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 11:46:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-05 11:46:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 11:46:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 11:46:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 11:46:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 11:46:29,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 11:46:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 11:46:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 11:46:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 11:46:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 11:46:35,863 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 11:46:35,864 INFO L299 CfgBuilder]: Removed 70 assume(true) statements. [2021-11-05 11:46:35,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 11:46:35 BoogieIcfgContainer [2021-11-05 11:46:35,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 11:46:35,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 11:46:35,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 11:46:35,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 11:46:35,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 11:46:27" (1/3) ... [2021-11-05 11:46:35,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f08e016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 11:46:35, skipping insertion in model container [2021-11-05 11:46:35,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (2/3) ... [2021-11-05 11:46:35,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f08e016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 11:46:35, skipping insertion in model container [2021-11-05 11:46:35,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 11:46:35" (3/3) ... [2021-11-05 11:46:35,872 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_eq_harness.i [2021-11-05 11:46:35,876 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 11:46:35,876 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-05 11:46:35,914 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 11:46:35,921 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 11:46:35,921 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-05 11:46:35,937 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) [2021-11-05 11:46:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-05 11:46:35,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:35,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:35,948 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)] === [2021-11-05 11:46:35,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:35,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1732530516, now seen corresponding path program 1 times [2021-11-05 11:46:35,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:35,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236139862] [2021-11-05 11:46:35,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:35,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:36,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:36,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236139862] [2021-11-05 11:46:36,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236139862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:36,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:36,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 11:46:36,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438335236] [2021-11-05 11:46:36,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:36,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 11:46:36,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:36,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 11:46:36,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 11:46:36,464 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) [2021-11-05 11:46:36,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:36,492 INFO L93 Difference]: Finished difference Result 149 states and 206 transitions. [2021-11-05 11:46:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 11:46:36,494 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 [2021-11-05 11:46:36,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:36,501 INFO L225 Difference]: With dead ends: 149 [2021-11-05 11:46:36,501 INFO L226 Difference]: Without dead ends: 70 [2021-11-05 11:46:36,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 11:46:36,511 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:36,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 2.51ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 11:46:36,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-05 11:46:36,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-05 11:46:36,544 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) [2021-11-05 11:46:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2021-11-05 11:46:36,548 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 27 [2021-11-05 11:46:36,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:36,549 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2021-11-05 11:46:36,549 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) [2021-11-05 11:46:36,550 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2021-11-05 11:46:36,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-05 11:46:36,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:36,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:36,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 11:46:36,553 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)] === [2021-11-05 11:46:36,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:36,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1816035494, now seen corresponding path program 1 times [2021-11-05 11:46:36,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:36,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610538321] [2021-11-05 11:46:36,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:36,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:37,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:37,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610538321] [2021-11-05 11:46:37,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610538321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:37,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:37,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 11:46:37,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899966909] [2021-11-05 11:46:37,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:37,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 11:46:37,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:37,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 11:46:37,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 11:46:37,013 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) [2021-11-05 11:46:37,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:37,097 INFO L93 Difference]: Finished difference Result 109 states and 125 transitions. [2021-11-05 11:46:37,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 11:46:37,098 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 [2021-11-05 11:46:37,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:37,099 INFO L225 Difference]: With dead ends: 109 [2021-11-05 11:46:37,099 INFO L226 Difference]: Without dead ends: 83 [2021-11-05 11:46:37,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.73ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 11:46:37,100 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 13 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.84ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.01ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:37,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 232 Invalid, 11 Unknown, 0 Unchecked, 1.84ms Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 47.01ms Time] [2021-11-05 11:46:37,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-05 11:46:37,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 72. [2021-11-05 11:46:37,105 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) [2021-11-05 11:46:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2021-11-05 11:46:37,106 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 27 [2021-11-05 11:46:37,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:37,106 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2021-11-05 11:46:37,106 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) [2021-11-05 11:46:37,107 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2021-11-05 11:46:37,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-05 11:46:37,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:37,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:37,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 11:46:37,108 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)] === [2021-11-05 11:46:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:37,108 INFO L85 PathProgramCache]: Analyzing trace with hash 515997540, now seen corresponding path program 1 times [2021-11-05 11:46:37,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:37,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227889613] [2021-11-05 11:46:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:37,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:38,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:38,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227889613] [2021-11-05 11:46:38,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227889613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:38,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:38,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 11:46:38,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65838683] [2021-11-05 11:46:38,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:38,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 11:46:38,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:38,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 11:46:38,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-05 11:46:38,347 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) [2021-11-05 11:46:40,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:40,081 INFO L93 Difference]: Finished difference Result 261 states and 304 transitions. [2021-11-05 11:46:40,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 11:46:40,081 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 [2021-11-05 11:46:40,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:40,082 INFO L225 Difference]: With dead ends: 261 [2021-11-05 11:46:40,083 INFO L226 Difference]: Without dead ends: 207 [2021-11-05 11:46:40,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1169.91ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-11-05 11:46:40,084 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 277 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 805.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.59ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 889.39ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:40,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 659 Invalid, 226 Unknown, 0 Unchecked, 9.59ms Time], IncrementalHoareTripleChecker [20 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 889.39ms Time] [2021-11-05 11:46:40,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-05 11:46:40,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 112. [2021-11-05 11:46:40,098 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) [2021-11-05 11:46:40,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2021-11-05 11:46:40,098 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 28 [2021-11-05 11:46:40,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:40,099 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2021-11-05 11:46:40,099 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) [2021-11-05 11:46:40,099 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2021-11-05 11:46:40,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-05 11:46:40,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:40,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:40,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 11:46:40,102 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)] === [2021-11-05 11:46:40,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:40,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1584995081, now seen corresponding path program 1 times [2021-11-05 11:46:40,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:40,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289419031] [2021-11-05 11:46:40,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:40,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:41,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:41,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289419031] [2021-11-05 11:46:41,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289419031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:41,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:41,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 11:46:41,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24547353] [2021-11-05 11:46:41,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:41,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 11:46:41,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:41,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 11:46:41,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-05 11:46:41,666 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) [2021-11-05 11:46:46,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:46,049 INFO L93 Difference]: Finished difference Result 302 states and 347 transitions. [2021-11-05 11:46:46,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-05 11:46:46,050 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 [2021-11-05 11:46:46,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:46,051 INFO L225 Difference]: With dead ends: 302 [2021-11-05 11:46:46,051 INFO L226 Difference]: Without dead ends: 253 [2021-11-05 11:46:46,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 3625.72ms TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2021-11-05 11:46:46,053 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 547 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1276.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.41ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1373.10ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:46,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 748 Invalid, 416 Unknown, 0 Unchecked, 11.41ms Time], IncrementalHoareTripleChecker [41 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 1373.10ms Time] [2021-11-05 11:46:46,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-05 11:46:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 139. [2021-11-05 11:46:46,065 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) [2021-11-05 11:46:46,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2021-11-05 11:46:46,065 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 31 [2021-11-05 11:46:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:46,065 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2021-11-05 11:46:46,065 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) [2021-11-05 11:46:46,065 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2021-11-05 11:46:46,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-05 11:46:46,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:46,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:46,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 11:46:46,083 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)] === [2021-11-05 11:46:46,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:46,083 INFO L85 PathProgramCache]: Analyzing trace with hash -693621156, now seen corresponding path program 1 times [2021-11-05 11:46:46,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:46,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343321731] [2021-11-05 11:46:46,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:46,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:47,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:47,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:47,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343321731] [2021-11-05 11:46:47,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343321731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:47,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:47,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 11:46:47,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696320371] [2021-11-05 11:46:47,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:47,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 11:46:47,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:47,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 11:46:47,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-05 11:46:47,352 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) [2021-11-05 11:46:51,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:51,265 INFO L93 Difference]: Finished difference Result 311 states and 352 transitions. [2021-11-05 11:46:51,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-05 11:46:51,266 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 [2021-11-05 11:46:51,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:51,267 INFO L225 Difference]: With dead ends: 311 [2021-11-05 11:46:51,267 INFO L226 Difference]: Without dead ends: 270 [2021-11-05 11:46:51,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 3089.28ms TimeCoverageRelationStatistics Valid=204, Invalid=498, Unknown=0, NotChecked=0, Total=702 [2021-11-05 11:46:51,268 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 617 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1224.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.48ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1333.54ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:51,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 839 Invalid, 510 Unknown, 0 Unchecked, 14.48ms Time], IncrementalHoareTripleChecker [56 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 1333.54ms Time] [2021-11-05 11:46:51,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-05 11:46:51,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 140. [2021-11-05 11:46:51,287 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) [2021-11-05 11:46:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 161 transitions. [2021-11-05 11:46:51,288 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 161 transitions. Word has length 34 [2021-11-05 11:46:51,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:51,289 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 161 transitions. [2021-11-05 11:46:51,289 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) [2021-11-05 11:46:51,290 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 161 transitions. [2021-11-05 11:46:51,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-05 11:46:51,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:51,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:51,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 11:46:51,293 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)] === [2021-11-05 11:46:51,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:51,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1814533261, now seen corresponding path program 1 times [2021-11-05 11:46:51,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:51,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528630940] [2021-11-05 11:46:51,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:51,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:51,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:51,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528630940] [2021-11-05 11:46:51,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528630940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:51,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:51,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 11:46:51,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015229672] [2021-11-05 11:46:51,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:51,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 11:46:51,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:51,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 11:46:51,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 11:46:51,927 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) [2021-11-05 11:46:52,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:52,469 INFO L93 Difference]: Finished difference Result 192 states and 221 transitions. [2021-11-05 11:46:52,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 11:46:52,470 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 [2021-11-05 11:46:52,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:52,471 INFO L225 Difference]: With dead ends: 192 [2021-11-05 11:46:52,471 INFO L226 Difference]: Without dead ends: 148 [2021-11-05 11:46:52,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 368.06ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 11:46:52,472 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 86 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 290.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.14ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 311.94ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:52,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 268 Invalid, 97 Unknown, 0 Unchecked, 2.14ms Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 311.94ms Time] [2021-11-05 11:46:52,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-05 11:46:52,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 140. [2021-11-05 11:46:52,489 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) [2021-11-05 11:46:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 158 transitions. [2021-11-05 11:46:52,489 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 158 transitions. Word has length 34 [2021-11-05 11:46:52,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:52,490 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 158 transitions. [2021-11-05 11:46:52,490 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) [2021-11-05 11:46:52,490 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 158 transitions. [2021-11-05 11:46:52,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-05 11:46:52,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:52,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:52,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 11:46:52,491 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)] === [2021-11-05 11:46:52,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:52,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1816380303, now seen corresponding path program 1 times [2021-11-05 11:46:52,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:52,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390446408] [2021-11-05 11:46:52,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:52,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:53,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:53,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:53,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390446408] [2021-11-05 11:46:53,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390446408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:53,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:53,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 11:46:53,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499689857] [2021-11-05 11:46:53,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:53,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 11:46:53,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:53,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 11:46:53,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 11:46:53,312 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) [2021-11-05 11:46:54,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:54,883 INFO L93 Difference]: Finished difference Result 236 states and 260 transitions. [2021-11-05 11:46:54,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 11:46:54,883 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 [2021-11-05 11:46:54,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:54,884 INFO L225 Difference]: With dead ends: 236 [2021-11-05 11:46:54,884 INFO L226 Difference]: Without dead ends: 222 [2021-11-05 11:46:54,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1320.53ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-11-05 11:46:54,885 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 174 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 467.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.07ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 505.06ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:54,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 644 Invalid, 163 Unknown, 0 Unchecked, 4.07ms Time], IncrementalHoareTripleChecker [6 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 505.06ms Time] [2021-11-05 11:46:54,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-05 11:46:54,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 135. [2021-11-05 11:46:54,893 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) [2021-11-05 11:46:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions. [2021-11-05 11:46:54,893 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 34 [2021-11-05 11:46:54,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:54,896 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 150 transitions. [2021-11-05 11:46:54,896 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) [2021-11-05 11:46:54,896 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions. [2021-11-05 11:46:54,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-05 11:46:54,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:54,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:54,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 11:46:54,897 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)] === [2021-11-05 11:46:54,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:54,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1600106888, now seen corresponding path program 1 times [2021-11-05 11:46:54,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:54,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404146221] [2021-11-05 11:46:54,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:54,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:55,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:55,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404146221] [2021-11-05 11:46:55,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404146221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:55,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:55,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 11:46:55,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470576087] [2021-11-05 11:46:55,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:55,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 11:46:55,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:55,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 11:46:55,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 11:46:55,187 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) [2021-11-05 11:46:55,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:55,358 INFO L93 Difference]: Finished difference Result 212 states and 236 transitions. [2021-11-05 11:46:55,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 11:46:55,359 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 [2021-11-05 11:46:55,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:55,360 INFO L225 Difference]: With dead ends: 212 [2021-11-05 11:46:55,360 INFO L226 Difference]: Without dead ends: 182 [2021-11-05 11:46:55,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 144.62ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 11:46:55,361 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 91 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.12ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.91ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:55,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 345 Invalid, 39 Unknown, 0 Unchecked, 1.12ms Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 119.91ms Time] [2021-11-05 11:46:55,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-05 11:46:55,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 173. [2021-11-05 11:46:55,369 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) [2021-11-05 11:46:55,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 196 transitions. [2021-11-05 11:46:55,370 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 196 transitions. Word has length 36 [2021-11-05 11:46:55,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:55,370 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 196 transitions. [2021-11-05 11:46:55,370 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) [2021-11-05 11:46:55,370 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 196 transitions. [2021-11-05 11:46:55,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-05 11:46:55,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:55,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:55,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 11:46:55,373 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)] === [2021-11-05 11:46:55,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:55,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1157582708, now seen corresponding path program 1 times [2021-11-05 11:46:55,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:55,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985511830] [2021-11-05 11:46:55,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:55,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:57,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:57,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985511830] [2021-11-05 11:46:57,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985511830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:57,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:57,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 11:46:57,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388632852] [2021-11-05 11:46:57,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:57,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 11:46:57,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:57,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 11:46:57,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-05 11:46:57,080 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) [2021-11-05 11:47:01,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:47:01,710 INFO L93 Difference]: Finished difference Result 239 states and 262 transitions. [2021-11-05 11:47:01,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-05 11:47:01,711 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 [2021-11-05 11:47:01,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:47:01,713 INFO L225 Difference]: With dead ends: 239 [2021-11-05 11:47:01,713 INFO L226 Difference]: Without dead ends: 197 [2021-11-05 11:47:01,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 3890.66ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-11-05 11:47:01,714 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 510 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1446.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.44ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1554.22ms IncrementalHoareTripleChecker+Time [2021-11-05 11:47:01,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 989 Invalid, 565 Unknown, 0 Unchecked, 21.44ms Time], IncrementalHoareTripleChecker [41 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 1554.22ms Time] [2021-11-05 11:47:01,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-05 11:47:01,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 173. [2021-11-05 11:47:01,719 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) [2021-11-05 11:47:01,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 194 transitions. [2021-11-05 11:47:01,719 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 194 transitions. Word has length 37 [2021-11-05 11:47:01,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:47:01,720 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 194 transitions. [2021-11-05 11:47:01,720 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) [2021-11-05 11:47:01,720 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 194 transitions. [2021-11-05 11:47:01,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-05 11:47:01,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:47:01,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:47:01,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 11:47:01,721 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)] === [2021-11-05 11:47:01,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:47:01,721 INFO L85 PathProgramCache]: Analyzing trace with hash 2104421696, now seen corresponding path program 1 times [2021-11-05 11:47:01,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:47:01,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309103052] [2021-11-05 11:47:01,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:47:01,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:47:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:47:04,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:47:04,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:47:04,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309103052] [2021-11-05 11:47:04,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309103052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:47:04,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:47:04,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 11:47:04,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064350018] [2021-11-05 11:47:04,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:47:04,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 11:47:04,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:47:04,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 11:47:04,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 11:47:04,118 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) [2021-11-05 11:47:04,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:47:04,432 INFO L93 Difference]: Finished difference Result 203 states and 225 transitions. [2021-11-05 11:47:04,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 11:47:04,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-05 11:47:04,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:47:04,436 INFO L225 Difference]: With dead ends: 203 [2021-11-05 11:47:04,437 INFO L226 Difference]: Without dead ends: 190 [2021-11-05 11:47:04,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 189.41ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-05 11:47:04,437 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 150 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 196.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.81ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 233.14ms IncrementalHoareTripleChecker+Time [2021-11-05 11:47:04,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 244 Invalid, 84 Unknown, 0 Unchecked, 0.81ms Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 233.14ms Time] [2021-11-05 11:47:04,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-05 11:47:04,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 171. [2021-11-05 11:47:04,442 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) [2021-11-05 11:47:04,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 191 transitions. [2021-11-05 11:47:04,443 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 191 transitions. Word has length 38 [2021-11-05 11:47:04,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:47:04,443 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 191 transitions. [2021-11-05 11:47:04,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:47:04,443 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 191 transitions. [2021-11-05 11:47:04,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-05 11:47:04,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:47:04,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:47:04,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 11:47:04,444 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)] === [2021-11-05 11:47:04,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:47:04,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1059303570, now seen corresponding path program 1 times [2021-11-05 11:47:04,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:47:04,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528505994] [2021-11-05 11:47:04,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:47:04,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:47:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:48:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:48:10,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:48:10,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528505994] [2021-11-05 11:48:10,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528505994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:48:10,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:48:10,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-05 11:48:10,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726538944] [2021-11-05 11:48:10,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:48:10,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-05 11:48:10,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:48:10,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-05 11:48:10,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-11-05 11:48:10,792 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) [2021-11-05 11:48:12,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:48:14,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:48:17,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:48:19,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:48:21,248 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:48:23,346 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:48:25,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:48:30,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:48:30,873 INFO L93 Difference]: Finished difference Result 207 states and 224 transitions. [2021-11-05 11:48:30,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 11:48:30,874 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 [2021-11-05 11:48:30,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:48:30,875 INFO L225 Difference]: With dead ends: 207 [2021-11-05 11:48:30,875 INFO L226 Difference]: Without dead ends: 205 [2021-11-05 11:48:30,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 8570.52ms TimeCoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2021-11-05 11:48:30,876 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 481 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 60 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16076.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.05ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16907.62ms IncrementalHoareTripleChecker+Time [2021-11-05 11:48:30,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 1004 Invalid, 749 Unknown, 0 Unchecked, 12.05ms Time], IncrementalHoareTripleChecker [60 Valid, 682 Invalid, 7 Unknown, 0 Unchecked, 16907.62ms Time] [2021-11-05 11:48:30,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-05 11:48:30,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 180. [2021-11-05 11:48:30,881 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) [2021-11-05 11:48:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 203 transitions. [2021-11-05 11:48:30,881 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 203 transitions. Word has length 39 [2021-11-05 11:48:30,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:48:30,882 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 203 transitions. [2021-11-05 11:48:30,882 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) [2021-11-05 11:48:30,882 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 203 transitions. [2021-11-05 11:48:30,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-05 11:48:30,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:48:30,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:48:30,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 11:48:30,882 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)] === [2021-11-05 11:48:30,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:48:30,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1520474377, now seen corresponding path program 1 times [2021-11-05 11:48:30,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:48:30,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125504189] [2021-11-05 11:48:30,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:48:30,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:48:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:48:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:48:31,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:48:31,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125504189] [2021-11-05 11:48:31,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125504189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:48:31,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:48:31,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 11:48:31,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945040399] [2021-11-05 11:48:31,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:48:31,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 11:48:31,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:48:31,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 11:48:31,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-05 11:48:31,483 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) [2021-11-05 11:48:32,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:48:32,558 INFO L93 Difference]: Finished difference Result 249 states and 271 transitions. [2021-11-05 11:48:32,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 11:48:32,558 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 [2021-11-05 11:48:32,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:48:32,559 INFO L225 Difference]: With dead ends: 249 [2021-11-05 11:48:32,559 INFO L226 Difference]: Without dead ends: 231 [2021-11-05 11:48:32,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 819.68ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-05 11:48:32,560 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 484 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 464.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.93ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 494.77ms IncrementalHoareTripleChecker+Time [2021-11-05 11:48:32,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 660 Invalid, 193 Unknown, 0 Unchecked, 2.93ms Time], IncrementalHoareTripleChecker [13 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 494.77ms Time] [2021-11-05 11:48:32,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-05 11:48:32,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 194. [2021-11-05 11:48:32,566 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) [2021-11-05 11:48:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 220 transitions. [2021-11-05 11:48:32,566 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 220 transitions. Word has length 39 [2021-11-05 11:48:32,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:48:32,567 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 220 transitions. [2021-11-05 11:48:32,567 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) [2021-11-05 11:48:32,567 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 220 transitions. [2021-11-05 11:48:32,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-05 11:48:32,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:48:32,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:48:32,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 11:48:32,568 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)] === [2021-11-05 11:48:32,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:48:32,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1653601109, now seen corresponding path program 1 times [2021-11-05 11:48:32,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:48:32,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715695401] [2021-11-05 11:48:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:48:32,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:48:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:48:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:48:33,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:48:33,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715695401] [2021-11-05 11:48:33,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715695401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:48:33,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:48:33,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 11:48:33,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712398037] [2021-11-05 11:48:33,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:48:33,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 11:48:33,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:48:33,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 11:48:33,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-05 11:48:33,278 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) [2021-11-05 11:48:34,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:48:34,550 INFO L93 Difference]: Finished difference Result 219 states and 243 transitions. [2021-11-05 11:48:34,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 11:48:34,551 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 [2021-11-05 11:48:34,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:48:34,552 INFO L225 Difference]: With dead ends: 219 [2021-11-05 11:48:34,552 INFO L226 Difference]: Without dead ends: 196 [2021-11-05 11:48:34,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1061.95ms TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-11-05 11:48:34,552 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 81 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 481.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.40ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 513.78ms IncrementalHoareTripleChecker+Time [2021-11-05 11:48:34,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 656 Invalid, 182 Unknown, 0 Unchecked, 1.40ms Time], IncrementalHoareTripleChecker [6 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 513.78ms Time] [2021-11-05 11:48:34,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-05 11:48:34,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 189. [2021-11-05 11:48:34,558 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) [2021-11-05 11:48:34,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 212 transitions. [2021-11-05 11:48:34,558 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 212 transitions. Word has length 40 [2021-11-05 11:48:34,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:48:34,558 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 212 transitions. [2021-11-05 11:48:34,558 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) [2021-11-05 11:48:34,558 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 212 transitions. [2021-11-05 11:48:34,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-05 11:48:34,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:48:34,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:48:34,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 11:48:34,560 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)] === [2021-11-05 11:48:34,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:48:34,560 INFO L85 PathProgramCache]: Analyzing trace with hash 691844793, now seen corresponding path program 1 times [2021-11-05 11:48:34,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:48:34,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121634558] [2021-11-05 11:48:34,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:48:34,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:48:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:48:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:48:35,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:48:35,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121634558] [2021-11-05 11:48:35,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121634558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:48:35,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:48:35,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 11:48:35,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628257832] [2021-11-05 11:48:35,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:48:35,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 11:48:35,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:48:35,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 11:48:35,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-05 11:48:35,049 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) [2021-11-05 11:48:36,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:48:36,023 INFO L93 Difference]: Finished difference Result 217 states and 232 transitions. [2021-11-05 11:48:36,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 11:48:36,024 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 [2021-11-05 11:48:36,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:48:36,024 INFO L225 Difference]: With dead ends: 217 [2021-11-05 11:48:36,024 INFO L226 Difference]: Without dead ends: 194 [2021-11-05 11:48:36,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 684.09ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-05 11:48:36,025 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 306 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 488.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.00ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 521.60ms IncrementalHoareTripleChecker+Time [2021-11-05 11:48:36,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 742 Invalid, 191 Unknown, 0 Unchecked, 3.00ms Time], IncrementalHoareTripleChecker [4 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 521.60ms Time] [2021-11-05 11:48:36,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-05 11:48:36,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 168. [2021-11-05 11:48:36,030 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) [2021-11-05 11:48:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 184 transitions. [2021-11-05 11:48:36,030 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 184 transitions. Word has length 40 [2021-11-05 11:48:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:48:36,030 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 184 transitions. [2021-11-05 11:48:36,030 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) [2021-11-05 11:48:36,030 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 184 transitions. [2021-11-05 11:48:36,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 11:48:36,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:48:36,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:48:36,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 11:48:36,035 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)] === [2021-11-05 11:48:36,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:48:36,036 INFO L85 PathProgramCache]: Analyzing trace with hash 94110528, now seen corresponding path program 1 times [2021-11-05 11:48:36,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:48:36,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906361890] [2021-11-05 11:48:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:48:36,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:48:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:48:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:48:36,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:48:36,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906361890] [2021-11-05 11:48:36,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906361890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:48:36,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:48:36,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 11:48:36,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590633001] [2021-11-05 11:48:36,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:48:36,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 11:48:36,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:48:36,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 11:48:36,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-05 11:48:36,401 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) [2021-11-05 11:48:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:48:37,217 INFO L93 Difference]: Finished difference Result 195 states and 208 transitions. [2021-11-05 11:48:37,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 11:48:37,218 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 [2021-11-05 11:48:37,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:48:37,218 INFO L225 Difference]: With dead ends: 195 [2021-11-05 11:48:37,218 INFO L226 Difference]: Without dead ends: 190 [2021-11-05 11:48:37,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 607.46ms TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-11-05 11:48:37,219 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 329 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 350.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 371.03ms IncrementalHoareTripleChecker+Time [2021-11-05 11:48:37,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 384 Invalid, 134 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 371.03ms Time] [2021-11-05 11:48:37,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-05 11:48:37,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 168. [2021-11-05 11:48:37,224 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) [2021-11-05 11:48:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 182 transitions. [2021-11-05 11:48:37,225 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 182 transitions. Word has length 41 [2021-11-05 11:48:37,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:48:37,225 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 182 transitions. [2021-11-05 11:48:37,225 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) [2021-11-05 11:48:37,225 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 182 transitions. [2021-11-05 11:48:37,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 11:48:37,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:48:37,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:48:37,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 11:48:37,226 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)] === [2021-11-05 11:48:37,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:48:37,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1947021686, now seen corresponding path program 1 times [2021-11-05 11:48:37,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:48:37,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396396703] [2021-11-05 11:48:37,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:48:37,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:48:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:48:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:48:49,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:48:49,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396396703] [2021-11-05 11:48:49,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396396703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:48:49,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:48:49,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 11:48:49,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073167580] [2021-11-05 11:48:49,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:48:49,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 11:48:49,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:48:49,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 11:48:49,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-05 11:48:49,310 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) [2021-11-05 11:48:51,374 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:48:53,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:48:55,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:48:57,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:48:59,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:49:01,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:49:06,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:49:06,133 INFO L93 Difference]: Finished difference Result 222 states and 234 transitions. [2021-11-05 11:49:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-05 11:49:06,134 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 [2021-11-05 11:49:06,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:49:06,135 INFO L225 Difference]: With dead ends: 222 [2021-11-05 11:49:06,135 INFO L226 Difference]: Without dead ends: 192 [2021-11-05 11:49:06,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3320.81ms TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2021-11-05 11:49:06,136 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 313 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 35 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13522.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.44ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14193.64ms IncrementalHoareTripleChecker+Time [2021-11-05 11:49:06,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 736 Invalid, 531 Unknown, 0 Unchecked, 7.44ms Time], IncrementalHoareTripleChecker [35 Valid, 490 Invalid, 6 Unknown, 0 Unchecked, 14193.64ms Time] [2021-11-05 11:49:06,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-05 11:49:06,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 170. [2021-11-05 11:49:06,141 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) [2021-11-05 11:49:06,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 183 transitions. [2021-11-05 11:49:06,143 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 183 transitions. Word has length 41 [2021-11-05 11:49:06,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:49:06,143 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 183 transitions. [2021-11-05 11:49:06,143 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) [2021-11-05 11:49:06,143 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 183 transitions. [2021-11-05 11:49:06,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 11:49:06,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:49:06,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:49:06,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 11:49:06,144 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)] === [2021-11-05 11:49:06,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:49:06,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1696696410, now seen corresponding path program 1 times [2021-11-05 11:49:06,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:49:06,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38171874] [2021-11-05 11:49:06,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:49:06,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:49:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:49:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:49:06,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:49:06,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38171874] [2021-11-05 11:49:06,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38171874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:49:06,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:49:06,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 11:49:06,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659057463] [2021-11-05 11:49:06,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:49:06,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 11:49:06,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:49:06,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 11:49:06,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-05 11:49:06,855 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) [2021-11-05 11:49:08,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:49:08,658 INFO L93 Difference]: Finished difference Result 240 states and 254 transitions. [2021-11-05 11:49:08,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 11:49:08,659 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 [2021-11-05 11:49:08,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:49:08,660 INFO L225 Difference]: With dead ends: 240 [2021-11-05 11:49:08,660 INFO L226 Difference]: Without dead ends: 214 [2021-11-05 11:49:08,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1366.68ms TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2021-11-05 11:49:08,660 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 379 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 727.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.12ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 769.52ms IncrementalHoareTripleChecker+Time [2021-11-05 11:49:08,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 615 Invalid, 286 Unknown, 0 Unchecked, 4.12ms Time], IncrementalHoareTripleChecker [12 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 769.52ms Time] [2021-11-05 11:49:08,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-05 11:49:08,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 193. [2021-11-05 11:49:08,667 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) [2021-11-05 11:49:08,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 210 transitions. [2021-11-05 11:49:08,667 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 210 transitions. Word has length 41 [2021-11-05 11:49:08,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:49:08,667 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 210 transitions. [2021-11-05 11:49:08,668 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) [2021-11-05 11:49:08,668 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 210 transitions. [2021-11-05 11:49:08,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 11:49:08,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:49:08,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:49:08,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 11:49:08,668 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)] === [2021-11-05 11:49:08,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:49:08,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1833906296, now seen corresponding path program 1 times [2021-11-05 11:49:08,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:49:08,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52826392] [2021-11-05 11:49:08,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:49:08,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:49:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:49:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:49:32,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:49:32,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52826392] [2021-11-05 11:49:32,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52826392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:49:32,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:49:32,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 11:49:32,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854067585] [2021-11-05 11:49:32,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:49:32,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 11:49:32,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:49:32,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 11:49:32,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-05 11:49:32,524 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) [2021-11-05 11:49:34,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:49:36,647 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:49:38,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:49:40,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:49:42,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:49:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:49:46,761 INFO L93 Difference]: Finished difference Result 203 states and 217 transitions. [2021-11-05 11:49:46,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 11:49:46,761 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 [2021-11-05 11:49:46,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:49:46,762 INFO L225 Difference]: With dead ends: 203 [2021-11-05 11:49:46,762 INFO L226 Difference]: Without dead ends: 162 [2021-11-05 11:49:46,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 3154.89ms TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2021-11-05 11:49:46,763 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 301 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11180.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.35ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11705.94ms IncrementalHoareTripleChecker+Time [2021-11-05 11:49:46,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 801 Invalid, 404 Unknown, 0 Unchecked, 5.35ms Time], IncrementalHoareTripleChecker [7 Valid, 392 Invalid, 5 Unknown, 0 Unchecked, 11705.94ms Time] [2021-11-05 11:49:46,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-05 11:49:46,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 152. [2021-11-05 11:49:46,783 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) [2021-11-05 11:49:46,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 161 transitions. [2021-11-05 11:49:46,784 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 161 transitions. Word has length 42 [2021-11-05 11:49:46,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:49:46,784 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 161 transitions. [2021-11-05 11:49:46,784 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) [2021-11-05 11:49:46,784 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 161 transitions. [2021-11-05 11:49:46,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-05 11:49:46,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:49:46,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:49:46,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 11:49:46,785 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)] === [2021-11-05 11:49:46,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:49:46,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1252880233, now seen corresponding path program 1 times [2021-11-05 11:49:46,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:49:46,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594417593] [2021-11-05 11:49:46,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:49:46,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:49:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:50:56,820 WARN L230 SmtUtils]: Spent 31.28s on a formula simplification that was a NOOP. DAG size: 181 [2021-11-05 11:51:30,176 WARN L230 SmtUtils]: Spent 16.27s on a formula simplification that was a NOOP. DAG size: 167 [2021-11-05 11:51:57,730 WARN L230 SmtUtils]: Spent 12.91s on a formula simplification that was a NOOP. DAG size: 164 [2021-11-05 11:52:26,062 WARN L230 SmtUtils]: Spent 15.08s on a formula simplification that was a NOOP. DAG size: 165 [2021-11-05 11:52:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:52:26,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:52:26,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594417593] [2021-11-05 11:52:26,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594417593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:52:26,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:52:26,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 11:52:26,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917538727] [2021-11-05 11:52:26,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:52:26,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 11:52:26,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:52:26,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 11:52:26,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=232, Unknown=1, NotChecked=0, Total=272 [2021-11-05 11:52:26,177 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) [2021-11-05 11:52:28,292 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:52:30,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:52:32,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:52:34,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:52:36,646 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:52:41,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:53:30,042 WARN L230 SmtUtils]: Spent 46.73s on a formula simplification. DAG size of input: 223 DAG size of output: 213 [2021-11-05 11:53:32,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:53:34,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:53:35,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:53:37,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:53:39,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:53:42,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:53:44,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:53:46,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:53:48,303 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:53:50,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:53:52,413 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:53:54,438 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:53:56,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:54:59,660 WARN L230 SmtUtils]: Spent 1.01m on a formula simplification. DAG size of input: 228 DAG size of output: 218 [2021-11-05 11:55:01,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:03,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:05,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15