./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_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 884fded8e66f5d1fb48ea41b5fc2a80efc48c733a21e019f076525ed24611a3d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 19:35:13,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 19:35:13,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 19:35:13,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 19:35:13,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 19:35:13,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 19:35:13,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 19:35:13,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 19:35:13,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 19:35:13,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 19:35:13,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 19:35:13,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 19:35:13,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 19:35:13,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 19:35:13,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 19:35:13,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 19:35:13,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 19:35:13,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 19:35:13,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 19:35:13,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 19:35:13,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 19:35:13,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 19:35:13,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 19:35:13,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 19:35:13,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 19:35:13,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 19:35:13,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 19:35:13,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 19:35:13,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 19:35:13,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 19:35:13,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 19:35:13,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 19:35:13,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 19:35:13,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 19:35:13,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 19:35:13,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 19:35:13,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 19:35:13,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 19:35:13,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 19:35:13,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 19:35:13,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 19:35:13,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 19:35:13,438 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 19:35:13,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 19:35:13,439 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 19:35:13,439 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 19:35:13,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 19:35:13,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 19:35:13,441 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 19:35:13,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 19:35:13,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 19:35:13,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 19:35:13,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 19:35:13,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 19:35:13,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 19:35:13,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 19:35:13,442 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 19:35:13,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 19:35:13,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 19:35:13,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 19:35:13,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 19:35:13,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 19:35:13,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 19:35:13,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 19:35:13,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 19:35:13,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 19:35:13,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 19:35:13,445 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 19:35:13,445 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 19:35:13,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 19:35:13,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 19:35:13,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 884fded8e66f5d1fb48ea41b5fc2a80efc48c733a21e019f076525ed24611a3d [2021-11-22 19:35:13,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 19:35:13,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 19:35:13,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 19:35:13,736 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 19:35:13,737 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 19:35:13,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i [2021-11-22 19:35:13,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba5482891/9d19fba34fe943d6a1f0ba79024d0df2/FLAG2f8dd54da [2021-11-22 19:35:14,586 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 19:35:14,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i [2021-11-22 19:35:14,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba5482891/9d19fba34fe943d6a1f0ba79024d0df2/FLAG2f8dd54da [2021-11-22 19:35:14,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba5482891/9d19fba34fe943d6a1f0ba79024d0df2 [2021-11-22 19:35:14,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 19:35:14,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 19:35:14,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 19:35:14,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 19:35:14,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 19:35:14,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:35:14" (1/1) ... [2021-11-22 19:35:14,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a142eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:14, skipping insertion in model container [2021-11-22 19:35:14,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:35:14" (1/1) ... [2021-11-22 19:35:14,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 19:35:14,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 19:35:15,080 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4492,4505] [2021-11-22 19:35:15,087 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4552,4565] [2021-11-22 19:35:15,959 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:15,960 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:15,962 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:15,963 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:15,965 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:15,987 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:15,989 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:15,992 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:15,992 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:16,221 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 19:35:16,222 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 19:35:16,223 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 19:35:16,224 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 19:35:16,225 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 19:35:16,226 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 19:35:16,226 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 19:35:16,227 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 19:35:16,227 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 19:35:16,228 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 19:35:16,328 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 19:35:16,449 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:16,450 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:16,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 19:35:16,582 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 19:35:16,606 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4492,4505] [2021-11-22 19:35:16,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4552,4565] [2021-11-22 19:35:16,649 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:16,650 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:16,651 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:16,651 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:16,652 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:16,665 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:16,666 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:16,667 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:16,668 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:16,706 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 19:35:16,707 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 19:35:16,707 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 19:35:16,708 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 19:35:16,708 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 19:35:16,709 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 19:35:16,710 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 19:35:16,710 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 19:35:16,710 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 19:35:16,711 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 19:35:16,734 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 19:35:16,816 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:16,816 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:35:16,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 19:35:17,002 INFO L208 MainTranslator]: Completed translation [2021-11-22 19:35:17,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:17 WrapperNode [2021-11-22 19:35:17,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 19:35:17,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 19:35:17,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 19:35:17,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 19:35:17,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:17" (1/1) ... [2021-11-22 19:35:17,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:17" (1/1) ... [2021-11-22 19:35:17,214 INFO L137 Inliner]: procedures = 690, calls = 2637, calls flagged for inlining = 951, calls inlined = 41, statements flattened = 1274 [2021-11-22 19:35:17,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 19:35:17,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 19:35:17,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 19:35:17,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 19:35:17,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:17" (1/1) ... [2021-11-22 19:35:17,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:17" (1/1) ... [2021-11-22 19:35:17,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:17" (1/1) ... [2021-11-22 19:35:17,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:17" (1/1) ... [2021-11-22 19:35:17,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:17" (1/1) ... [2021-11-22 19:35:17,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:17" (1/1) ... [2021-11-22 19:35:17,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:17" (1/1) ... [2021-11-22 19:35:17,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 19:35:17,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 19:35:17,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 19:35:17,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 19:35:17,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:17" (1/1) ... [2021-11-22 19:35:17,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 19:35:17,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:35:17,369 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) [2021-11-22 19:35:17,390 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 [2021-11-22 19:35:17,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 19:35:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-11-22 19:35:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 19:35:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 19:35:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 19:35:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 19:35:17,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 19:35:17,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 19:35:17,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 19:35:17,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 19:35:17,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 19:35:17,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 19:35:17,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 19:35:17,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 19:35:17,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 19:35:17,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 19:35:17,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-11-22 19:35:17,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 19:35:17,697 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 19:35:17,698 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 19:35:18,889 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 19:35:18,896 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 19:35:18,896 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 19:35:18,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:35:18 BoogieIcfgContainer [2021-11-22 19:35:18,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 19:35:18,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 19:35:18,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 19:35:18,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 19:35:18,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:35:14" (1/3) ... [2021-11-22 19:35:18,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd31718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:35:18, skipping insertion in model container [2021-11-22 19:35:18,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:35:17" (2/3) ... [2021-11-22 19:35:18,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd31718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:35:18, skipping insertion in model container [2021-11-22 19:35:18,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:35:18" (3/3) ... [2021-11-22 19:35:18,905 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_harness.i [2021-11-22 19:35:18,909 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 19:35:18,910 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-11-22 19:35:18,953 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 19:35:18,969 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 [2021-11-22 19:35:18,970 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-11-22 19:35:18,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 161 states have (on average 1.5031055900621118) internal successors, (242), 174 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:18,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-22 19:35:18,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:18,994 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] [2021-11-22 19:35:18,994 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:18,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:18,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1767919810, now seen corresponding path program 1 times [2021-11-22 19:35:19,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:19,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787072169] [2021-11-22 19:35:19,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:19,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:19,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:19,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787072169] [2021-11-22 19:35:19,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787072169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:19,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:19,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 19:35:19,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104470861] [2021-11-22 19:35:19,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:19,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 19:35:19,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:19,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 19:35:19,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 19:35:19,546 INFO L87 Difference]: Start difference. First operand has 175 states, 161 states have (on average 1.5031055900621118) internal successors, (242), 174 states have internal predecessors, (242), 0 states have call successors, (0), 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 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:19,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:19,575 INFO L93 Difference]: Finished difference Result 347 states and 480 transitions. [2021-11-22 19:35:19,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 19:35:19,577 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-22 19:35:19,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:19,585 INFO L225 Difference]: With dead ends: 347 [2021-11-22 19:35:19,586 INFO L226 Difference]: Without dead ends: 170 [2021-11-22 19:35:19,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 19:35:19,591 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:19,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:35:19,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-22 19:35:19,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-11-22 19:35:19,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 157 states have (on average 1.3821656050955413) internal successors, (217), 169 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:19,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 217 transitions. [2021-11-22 19:35:19,655 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 217 transitions. Word has length 33 [2021-11-22 19:35:19,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:19,657 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 217 transitions. [2021-11-22 19:35:19,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:19,657 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 217 transitions. [2021-11-22 19:35:19,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-22 19:35:19,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:19,662 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] [2021-11-22 19:35:19,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 19:35:19,663 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:19,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:19,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1997046536, now seen corresponding path program 1 times [2021-11-22 19:35:19,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:19,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573904585] [2021-11-22 19:35:19,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:19,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:19,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:19,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573904585] [2021-11-22 19:35:19,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573904585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:19,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:19,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:35:19,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33968510] [2021-11-22 19:35:19,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:19,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:35:19,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:19,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:35:19,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:35:19,900 INFO L87 Difference]: Start difference. First operand 170 states and 217 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:19,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:19,988 INFO L93 Difference]: Finished difference Result 314 states and 400 transitions. [2021-11-22 19:35:19,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 19:35:19,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-22 19:35:19,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:19,992 INFO L225 Difference]: With dead ends: 314 [2021-11-22 19:35:19,992 INFO L226 Difference]: Without dead ends: 170 [2021-11-22 19:35:19,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:35:19,999 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 291 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:20,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 298 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:35:20,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-22 19:35:20,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-11-22 19:35:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 157 states have (on average 1.3630573248407643) internal successors, (214), 169 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 214 transitions. [2021-11-22 19:35:20,018 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 214 transitions. Word has length 33 [2021-11-22 19:35:20,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:20,019 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 214 transitions. [2021-11-22 19:35:20,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:20,019 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 214 transitions. [2021-11-22 19:35:20,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 19:35:20,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:20,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:20,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 19:35:20,022 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:20,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:20,022 INFO L85 PathProgramCache]: Analyzing trace with hash -234670874, now seen corresponding path program 1 times [2021-11-22 19:35:20,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:20,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247932738] [2021-11-22 19:35:20,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:20,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:20,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:20,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247932738] [2021-11-22 19:35:20,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247932738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:20,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:20,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:35:20,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905842553] [2021-11-22 19:35:20,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:20,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:35:20,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:20,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:35:20,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:35:20,228 INFO L87 Difference]: Start difference. First operand 170 states and 214 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:20,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:20,326 INFO L93 Difference]: Finished difference Result 365 states and 466 transitions. [2021-11-22 19:35:20,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 19:35:20,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-22 19:35:20,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:20,328 INFO L225 Difference]: With dead ends: 365 [2021-11-22 19:35:20,328 INFO L226 Difference]: Without dead ends: 220 [2021-11-22 19:35:20,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:35:20,330 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 118 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:20,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 570 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:35:20,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-22 19:35:20,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 180. [2021-11-22 19:35:20,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 167 states have (on average 1.341317365269461) internal successors, (224), 179 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:20,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 224 transitions. [2021-11-22 19:35:20,339 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 224 transitions. Word has length 45 [2021-11-22 19:35:20,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:20,339 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 224 transitions. [2021-11-22 19:35:20,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:20,340 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 224 transitions. [2021-11-22 19:35:20,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 19:35:20,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:20,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:20,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 19:35:20,341 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:20,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:20,342 INFO L85 PathProgramCache]: Analyzing trace with hash -257303128, now seen corresponding path program 1 times [2021-11-22 19:35:20,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:20,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682042505] [2021-11-22 19:35:20,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:20,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:20,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:20,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682042505] [2021-11-22 19:35:20,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682042505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:20,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:20,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 19:35:20,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432666968] [2021-11-22 19:35:20,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:20,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 19:35:20,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:20,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 19:35:20,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:35:20,590 INFO L87 Difference]: Start difference. First operand 180 states and 224 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:20,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:20,667 INFO L93 Difference]: Finished difference Result 267 states and 323 transitions. [2021-11-22 19:35:20,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 19:35:20,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-22 19:35:20,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:20,669 INFO L225 Difference]: With dead ends: 267 [2021-11-22 19:35:20,669 INFO L226 Difference]: Without dead ends: 180 [2021-11-22 19:35:20,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:35:20,671 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 433 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:20,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 326 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:35:20,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-22 19:35:20,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-11-22 19:35:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 167 states have (on average 1.3293413173652695) internal successors, (222), 179 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 222 transitions. [2021-11-22 19:35:20,678 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 222 transitions. Word has length 45 [2021-11-22 19:35:20,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:20,678 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 222 transitions. [2021-11-22 19:35:20,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:20,679 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 222 transitions. [2021-11-22 19:35:20,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-22 19:35:20,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:20,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:20,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 19:35:20,681 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:20,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:20,681 INFO L85 PathProgramCache]: Analyzing trace with hash 237660701, now seen corresponding path program 1 times [2021-11-22 19:35:20,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:20,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048405231] [2021-11-22 19:35:20,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:20,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:20,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:20,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048405231] [2021-11-22 19:35:20,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048405231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:20,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:20,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 19:35:20,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571792411] [2021-11-22 19:35:20,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:20,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 19:35:20,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:20,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 19:35:20,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 19:35:20,911 INFO L87 Difference]: Start difference. First operand 180 states and 222 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:21,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:21,101 INFO L93 Difference]: Finished difference Result 299 states and 358 transitions. [2021-11-22 19:35:21,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 19:35:21,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-22 19:35:21,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:21,107 INFO L225 Difference]: With dead ends: 299 [2021-11-22 19:35:21,107 INFO L226 Difference]: Without dead ends: 286 [2021-11-22 19:35:21,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-22 19:35:21,109 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 220 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:21,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 821 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:35:21,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-22 19:35:21,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 186. [2021-11-22 19:35:21,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 173 states have (on average 1.3121387283236994) internal successors, (227), 185 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:21,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 227 transitions. [2021-11-22 19:35:21,116 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 227 transitions. Word has length 51 [2021-11-22 19:35:21,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:21,117 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 227 transitions. [2021-11-22 19:35:21,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:21,117 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 227 transitions. [2021-11-22 19:35:21,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 19:35:21,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:21,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:21,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 19:35:21,119 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:21,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:21,119 INFO L85 PathProgramCache]: Analyzing trace with hash -936521886, now seen corresponding path program 1 times [2021-11-22 19:35:21,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:21,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901621542] [2021-11-22 19:35:21,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:21,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:21,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:21,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901621542] [2021-11-22 19:35:21,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901621542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:21,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:21,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:35:21,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79739842] [2021-11-22 19:35:21,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:21,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:35:21,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:21,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:35:21,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:35:21,277 INFO L87 Difference]: Start difference. First operand 186 states and 227 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:21,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:21,295 INFO L93 Difference]: Finished difference Result 278 states and 334 transitions. [2021-11-22 19:35:21,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 19:35:21,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-22 19:35:21,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:21,297 INFO L225 Difference]: With dead ends: 278 [2021-11-22 19:35:21,297 INFO L226 Difference]: Without dead ends: 232 [2021-11-22 19:35:21,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:35:21,298 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 52 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:21,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 623 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:35:21,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-22 19:35:21,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 188. [2021-11-22 19:35:21,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 175 states have (on average 1.3085714285714285) internal successors, (229), 187 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:21,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 229 transitions. [2021-11-22 19:35:21,305 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 229 transitions. Word has length 55 [2021-11-22 19:35:21,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:21,305 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 229 transitions. [2021-11-22 19:35:21,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:21,306 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 229 transitions. [2021-11-22 19:35:21,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 19:35:21,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:21,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:21,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 19:35:21,318 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:21,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:21,319 INFO L85 PathProgramCache]: Analyzing trace with hash -87741033, now seen corresponding path program 1 times [2021-11-22 19:35:21,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:21,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374085768] [2021-11-22 19:35:21,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:21,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:21,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:21,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374085768] [2021-11-22 19:35:21,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374085768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:21,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:21,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 19:35:21,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844309441] [2021-11-22 19:35:21,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:21,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 19:35:21,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:21,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 19:35:21,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-22 19:35:21,910 INFO L87 Difference]: Start difference. First operand 188 states and 229 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:23,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:23,110 INFO L93 Difference]: Finished difference Result 595 states and 723 transitions. [2021-11-22 19:35:23,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-22 19:35:23,111 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-22 19:35:23,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:23,114 INFO L225 Difference]: With dead ends: 595 [2021-11-22 19:35:23,114 INFO L226 Difference]: Without dead ends: 448 [2021-11-22 19:35:23,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2021-11-22 19:35:23,116 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 1583 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:23,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1583 Valid, 1046 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 19:35:23,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-22 19:35:23,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 323. [2021-11-22 19:35:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 310 states have (on average 1.3193548387096774) internal successors, (409), 322 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:23,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 409 transitions. [2021-11-22 19:35:23,129 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 409 transitions. Word has length 55 [2021-11-22 19:35:23,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:23,129 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 409 transitions. [2021-11-22 19:35:23,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:23,130 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 409 transitions. [2021-11-22 19:35:23,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 19:35:23,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:23,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:23,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 19:35:23,131 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:23,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:23,132 INFO L85 PathProgramCache]: Analyzing trace with hash 170424405, now seen corresponding path program 1 times [2021-11-22 19:35:23,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:23,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071004558] [2021-11-22 19:35:23,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:23,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:23,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:23,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:23,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071004558] [2021-11-22 19:35:23,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071004558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:23,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:23,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 19:35:23,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939838187] [2021-11-22 19:35:23,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:23,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 19:35:23,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:23,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 19:35:23,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-22 19:35:23,466 INFO L87 Difference]: Start difference. First operand 323 states and 409 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:24,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:24,518 INFO L93 Difference]: Finished difference Result 793 states and 1008 transitions. [2021-11-22 19:35:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 19:35:24,519 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-22 19:35:24,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:24,521 INFO L225 Difference]: With dead ends: 793 [2021-11-22 19:35:24,521 INFO L226 Difference]: Without dead ends: 539 [2021-11-22 19:35:24,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-11-22 19:35:24,522 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 1266 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:24,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1266 Valid, 1253 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 19:35:24,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-11-22 19:35:24,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 454. [2021-11-22 19:35:24,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 441 states have (on average 1.3174603174603174) internal successors, (581), 453 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:24,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 581 transitions. [2021-11-22 19:35:24,540 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 581 transitions. Word has length 55 [2021-11-22 19:35:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:24,541 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 581 transitions. [2021-11-22 19:35:24,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 581 transitions. [2021-11-22 19:35:24,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 19:35:24,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:24,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:24,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 19:35:24,543 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:24,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:24,543 INFO L85 PathProgramCache]: Analyzing trace with hash -840692845, now seen corresponding path program 1 times [2021-11-22 19:35:24,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:24,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600115950] [2021-11-22 19:35:24,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:24,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:24,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:24,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600115950] [2021-11-22 19:35:24,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600115950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:24,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:24,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 19:35:24,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82850008] [2021-11-22 19:35:24,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:24,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 19:35:24,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:24,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 19:35:24,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:35:24,773 INFO L87 Difference]: Start difference. First operand 454 states and 581 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:25,223 INFO L93 Difference]: Finished difference Result 1240 states and 1589 transitions. [2021-11-22 19:35:25,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 19:35:25,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-22 19:35:25,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:25,227 INFO L225 Difference]: With dead ends: 1240 [2021-11-22 19:35:25,227 INFO L226 Difference]: Without dead ends: 826 [2021-11-22 19:35:25,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-22 19:35:25,229 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 328 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:25,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 693 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 19:35:25,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-11-22 19:35:25,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 510. [2021-11-22 19:35:25,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 497 states have (on average 1.3098591549295775) internal successors, (651), 509 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:25,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 651 transitions. [2021-11-22 19:35:25,255 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 651 transitions. Word has length 55 [2021-11-22 19:35:25,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:25,255 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 651 transitions. [2021-11-22 19:35:25,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:25,256 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 651 transitions. [2021-11-22 19:35:25,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 19:35:25,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:25,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:25,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 19:35:25,257 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:25,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:25,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1520751215, now seen corresponding path program 1 times [2021-11-22 19:35:25,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:25,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755877923] [2021-11-22 19:35:25,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:25,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:25,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:25,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:25,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755877923] [2021-11-22 19:35:25,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755877923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:25,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:25,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 19:35:25,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245731688] [2021-11-22 19:35:25,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:25,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 19:35:25,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:25,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 19:35:25,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:35:25,662 INFO L87 Difference]: Start difference. First operand 510 states and 651 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:27,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:27,049 INFO L93 Difference]: Finished difference Result 1397 states and 1781 transitions. [2021-11-22 19:35:27,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-22 19:35:27,050 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-22 19:35:27,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:27,053 INFO L225 Difference]: With dead ends: 1397 [2021-11-22 19:35:27,053 INFO L226 Difference]: Without dead ends: 942 [2021-11-22 19:35:27,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=219, Invalid=537, Unknown=0, NotChecked=0, Total=756 [2021-11-22 19:35:27,055 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 1190 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:27,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1190 Valid, 1319 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 19:35:27,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-11-22 19:35:27,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 764. [2021-11-22 19:35:27,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 751 states have (on average 1.3089214380825567) internal successors, (983), 763 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:27,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 983 transitions. [2021-11-22 19:35:27,085 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 983 transitions. Word has length 55 [2021-11-22 19:35:27,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:27,086 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 983 transitions. [2021-11-22 19:35:27,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:27,086 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 983 transitions. [2021-11-22 19:35:27,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-22 19:35:27,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:27,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:27,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 19:35:27,088 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:27,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:27,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1034903783, now seen corresponding path program 1 times [2021-11-22 19:35:27,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:27,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812425578] [2021-11-22 19:35:27,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:27,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:27,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:27,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:27,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812425578] [2021-11-22 19:35:27,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812425578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:27,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:27,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 19:35:27,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968301487] [2021-11-22 19:35:27,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:27,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 19:35:27,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:27,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 19:35:27,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 19:35:27,304 INFO L87 Difference]: Start difference. First operand 764 states and 983 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:27,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:27,411 INFO L93 Difference]: Finished difference Result 803 states and 1029 transitions. [2021-11-22 19:35:27,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 19:35:27,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-22 19:35:27,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:27,419 INFO L225 Difference]: With dead ends: 803 [2021-11-22 19:35:27,419 INFO L226 Difference]: Without dead ends: 801 [2021-11-22 19:35:27,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:35:27,420 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 423 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:27,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 557 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:35:27,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-11-22 19:35:27,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 762. [2021-11-22 19:35:27,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 750 states have (on average 1.3) internal successors, (975), 761 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 975 transitions. [2021-11-22 19:35:27,447 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 975 transitions. Word has length 56 [2021-11-22 19:35:27,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:27,447 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 975 transitions. [2021-11-22 19:35:27,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:27,447 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 975 transitions. [2021-11-22 19:35:27,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 19:35:27,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:27,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:27,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 19:35:27,449 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:27,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:27,450 INFO L85 PathProgramCache]: Analyzing trace with hash -35945588, now seen corresponding path program 1 times [2021-11-22 19:35:27,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:27,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847855119] [2021-11-22 19:35:27,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:27,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:27,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:27,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847855119] [2021-11-22 19:35:27,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847855119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:27,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:27,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 19:35:27,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150679326] [2021-11-22 19:35:27,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:27,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 19:35:27,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:27,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 19:35:27,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:35:27,621 INFO L87 Difference]: Start difference. First operand 762 states and 975 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:27,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:27,974 INFO L93 Difference]: Finished difference Result 1179 states and 1486 transitions. [2021-11-22 19:35:27,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 19:35:27,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-22 19:35:27,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:27,978 INFO L225 Difference]: With dead ends: 1179 [2021-11-22 19:35:27,979 INFO L226 Difference]: Without dead ends: 1162 [2021-11-22 19:35:27,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-22 19:35:27,980 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 242 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:27,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 1135 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 19:35:27,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2021-11-22 19:35:28,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 778. [2021-11-22 19:35:28,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 766 states have (on average 1.2924281984334203) internal successors, (990), 777 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 990 transitions. [2021-11-22 19:35:28,008 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 990 transitions. Word has length 57 [2021-11-22 19:35:28,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:28,009 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 990 transitions. [2021-11-22 19:35:28,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:28,009 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 990 transitions. [2021-11-22 19:35:28,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 19:35:28,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:28,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:28,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 19:35:28,011 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:28,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:28,011 INFO L85 PathProgramCache]: Analyzing trace with hash -845292214, now seen corresponding path program 1 times [2021-11-22 19:35:28,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:28,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588351313] [2021-11-22 19:35:28,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:28,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:28,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:28,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:28,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588351313] [2021-11-22 19:35:28,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588351313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:28,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:28,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 19:35:28,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770320337] [2021-11-22 19:35:28,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:28,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 19:35:28,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:28,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 19:35:28,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-22 19:35:28,387 INFO L87 Difference]: Start difference. First operand 778 states and 990 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:30,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:30,323 INFO L93 Difference]: Finished difference Result 2281 states and 2856 transitions. [2021-11-22 19:35:30,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-22 19:35:30,324 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-22 19:35:30,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:30,329 INFO L225 Difference]: With dead ends: 2281 [2021-11-22 19:35:30,329 INFO L226 Difference]: Without dead ends: 1527 [2021-11-22 19:35:30,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=279, Invalid=777, Unknown=0, NotChecked=0, Total=1056 [2021-11-22 19:35:30,331 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 1095 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:30,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 2066 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-22 19:35:30,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2021-11-22 19:35:30,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1009. [2021-11-22 19:35:30,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 997 states have (on average 1.279839518555667) internal successors, (1276), 1008 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:30,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1276 transitions. [2021-11-22 19:35:30,371 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1276 transitions. Word has length 57 [2021-11-22 19:35:30,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:30,371 INFO L470 AbstractCegarLoop]: Abstraction has 1009 states and 1276 transitions. [2021-11-22 19:35:30,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:30,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1276 transitions. [2021-11-22 19:35:30,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-22 19:35:30,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:30,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:30,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 19:35:30,373 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:30,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:30,374 INFO L85 PathProgramCache]: Analyzing trace with hash -658662016, now seen corresponding path program 1 times [2021-11-22 19:35:30,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:30,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941593406] [2021-11-22 19:35:30,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:30,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:30,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:30,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941593406] [2021-11-22 19:35:30,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941593406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:30,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:30,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 19:35:30,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138522214] [2021-11-22 19:35:30,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:30,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 19:35:30,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:30,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 19:35:30,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:35:30,566 INFO L87 Difference]: Start difference. First operand 1009 states and 1276 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:30,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:30,946 INFO L93 Difference]: Finished difference Result 2360 states and 2953 transitions. [2021-11-22 19:35:30,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 19:35:30,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-22 19:35:30,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:30,951 INFO L225 Difference]: With dead ends: 2360 [2021-11-22 19:35:30,951 INFO L226 Difference]: Without dead ends: 1524 [2021-11-22 19:35:30,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-22 19:35:30,953 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 412 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:30,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 431 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:35:30,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-11-22 19:35:30,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 977. [2021-11-22 19:35:30,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 965 states have (on average 1.2590673575129534) internal successors, (1215), 976 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:30,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1215 transitions. [2021-11-22 19:35:30,985 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1215 transitions. Word has length 58 [2021-11-22 19:35:30,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:30,985 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1215 transitions. [2021-11-22 19:35:30,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:30,985 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1215 transitions. [2021-11-22 19:35:30,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-22 19:35:30,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:30,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:30,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 19:35:30,987 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:30,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:30,988 INFO L85 PathProgramCache]: Analyzing trace with hash 21396354, now seen corresponding path program 1 times [2021-11-22 19:35:30,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:30,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358339568] [2021-11-22 19:35:30,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:30,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:31,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:31,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:31,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358339568] [2021-11-22 19:35:31,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358339568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:31,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:31,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-22 19:35:31,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138346868] [2021-11-22 19:35:31,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:31,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 19:35:31,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:31,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 19:35:31,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-22 19:35:31,551 INFO L87 Difference]: Start difference. First operand 977 states and 1215 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:33,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:33,757 INFO L93 Difference]: Finished difference Result 1753 states and 2130 transitions. [2021-11-22 19:35:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-22 19:35:33,757 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-22 19:35:33,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:33,761 INFO L225 Difference]: With dead ends: 1753 [2021-11-22 19:35:33,761 INFO L226 Difference]: Without dead ends: 1596 [2021-11-22 19:35:33,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2021-11-22 19:35:33,763 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 2706 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2706 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:33,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2706 Valid, 1890 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-22 19:35:33,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2021-11-22 19:35:33,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1037. [2021-11-22 19:35:33,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 1025 states have (on average 1.2663414634146342) internal successors, (1298), 1036 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:33,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1298 transitions. [2021-11-22 19:35:33,802 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1298 transitions. Word has length 58 [2021-11-22 19:35:33,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:33,802 INFO L470 AbstractCegarLoop]: Abstraction has 1037 states and 1298 transitions. [2021-11-22 19:35:33,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:33,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1298 transitions. [2021-11-22 19:35:33,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-22 19:35:33,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:33,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:33,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 19:35:33,805 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:33,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:33,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1087889521, now seen corresponding path program 1 times [2021-11-22 19:35:33,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:33,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685219495] [2021-11-22 19:35:33,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:33,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:34,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:34,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685219495] [2021-11-22 19:35:34,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685219495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:34,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:34,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-22 19:35:34,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606311233] [2021-11-22 19:35:34,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:34,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-22 19:35:34,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:34,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-22 19:35:34,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-22 19:35:34,912 INFO L87 Difference]: Start difference. First operand 1037 states and 1298 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:37,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:37,520 INFO L93 Difference]: Finished difference Result 1565 states and 1919 transitions. [2021-11-22 19:35:37,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-22 19:35:37,520 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-22 19:35:37,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:37,524 INFO L225 Difference]: With dead ends: 1565 [2021-11-22 19:35:37,524 INFO L226 Difference]: Without dead ends: 1563 [2021-11-22 19:35:37,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2021-11-22 19:35:37,525 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 2928 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2928 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:37,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2928 Valid, 2011 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-22 19:35:37,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2021-11-22 19:35:37,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1065. [2021-11-22 19:35:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1053 states have (on average 1.2640075973409306) internal successors, (1331), 1064 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:37,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1331 transitions. [2021-11-22 19:35:37,580 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1331 transitions. Word has length 58 [2021-11-22 19:35:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:37,580 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 1331 transitions. [2021-11-22 19:35:37,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1331 transitions. [2021-11-22 19:35:37,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-22 19:35:37,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:37,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:37,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 19:35:37,582 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:37,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:37,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1669779266, now seen corresponding path program 1 times [2021-11-22 19:35:37,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:37,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119540917] [2021-11-22 19:35:37,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:37,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:38,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:38,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119540917] [2021-11-22 19:35:38,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119540917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:38,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:38,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-22 19:35:38,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623854862] [2021-11-22 19:35:38,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:38,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-22 19:35:38,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:38,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-22 19:35:38,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-22 19:35:38,152 INFO L87 Difference]: Start difference. First operand 1065 states and 1331 transitions. Second operand has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:41,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:41,834 INFO L93 Difference]: Finished difference Result 3005 states and 3644 transitions. [2021-11-22 19:35:41,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-22 19:35:41,835 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-22 19:35:41,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:41,843 INFO L225 Difference]: With dead ends: 3005 [2021-11-22 19:35:41,843 INFO L226 Difference]: Without dead ends: 2640 [2021-11-22 19:35:41,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1117, Invalid=4735, Unknown=0, NotChecked=0, Total=5852 [2021-11-22 19:35:41,847 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 3854 mSDsluCounter, 2569 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3854 SdHoareTripleChecker+Valid, 2897 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:41,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3854 Valid, 2897 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-22 19:35:41,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-11-22 19:35:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 1296. [2021-11-22 19:35:41,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1284 states have (on average 1.264018691588785) internal successors, (1623), 1295 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1623 transitions. [2021-11-22 19:35:41,911 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1623 transitions. Word has length 58 [2021-11-22 19:35:41,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:41,911 INFO L470 AbstractCegarLoop]: Abstraction has 1296 states and 1623 transitions. [2021-11-22 19:35:41,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:41,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1623 transitions. [2021-11-22 19:35:41,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-22 19:35:41,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:41,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:41,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 19:35:41,914 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:41,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:41,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1889739991, now seen corresponding path program 1 times [2021-11-22 19:35:41,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:41,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581506391] [2021-11-22 19:35:41,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:41,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:42,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:42,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581506391] [2021-11-22 19:35:42,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581506391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:42,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:42,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 19:35:42,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267937097] [2021-11-22 19:35:42,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:42,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 19:35:42,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:42,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 19:35:42,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 19:35:42,229 INFO L87 Difference]: Start difference. First operand 1296 states and 1623 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:42,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:42,714 INFO L93 Difference]: Finished difference Result 1448 states and 1792 transitions. [2021-11-22 19:35:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 19:35:42,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-22 19:35:42,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:42,719 INFO L225 Difference]: With dead ends: 1448 [2021-11-22 19:35:42,719 INFO L226 Difference]: Without dead ends: 1446 [2021-11-22 19:35:42,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:35:42,720 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 226 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:42,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 665 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 19:35:42,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-11-22 19:35:42,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1304. [2021-11-22 19:35:42,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1292 states have (on average 1.261609907120743) internal successors, (1630), 1303 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:42,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1630 transitions. [2021-11-22 19:35:42,777 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1630 transitions. Word has length 58 [2021-11-22 19:35:42,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:42,777 INFO L470 AbstractCegarLoop]: Abstraction has 1304 states and 1630 transitions. [2021-11-22 19:35:42,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1630 transitions. [2021-11-22 19:35:42,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 19:35:42,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:42,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:42,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 19:35:42,780 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:42,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:42,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1902634545, now seen corresponding path program 1 times [2021-11-22 19:35:42,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:42,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285660600] [2021-11-22 19:35:42,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:42,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:43,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:43,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285660600] [2021-11-22 19:35:43,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285660600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:43,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:43,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 19:35:43,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921339620] [2021-11-22 19:35:43,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:43,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 19:35:43,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:43,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 19:35:43,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-22 19:35:43,127 INFO L87 Difference]: Start difference. First operand 1304 states and 1630 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:43,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:43,966 INFO L93 Difference]: Finished difference Result 2543 states and 3157 transitions. [2021-11-22 19:35:43,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 19:35:43,966 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-22 19:35:43,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:43,971 INFO L225 Difference]: With dead ends: 2543 [2021-11-22 19:35:43,971 INFO L226 Difference]: Without dead ends: 1800 [2021-11-22 19:35:43,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-11-22 19:35:43,973 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 776 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:43,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 1221 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 19:35:43,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2021-11-22 19:35:44,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1183. [2021-11-22 19:35:44,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1171 states have (on average 1.2613151152860802) internal successors, (1477), 1182 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1477 transitions. [2021-11-22 19:35:44,025 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1477 transitions. Word has length 59 [2021-11-22 19:35:44,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:44,026 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1477 transitions. [2021-11-22 19:35:44,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:44,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1477 transitions. [2021-11-22 19:35:44,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 19:35:44,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:44,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:44,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 19:35:44,028 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:44,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:44,029 INFO L85 PathProgramCache]: Analyzing trace with hash 995531231, now seen corresponding path program 1 times [2021-11-22 19:35:44,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:44,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806886835] [2021-11-22 19:35:44,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:44,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:44,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:44,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806886835] [2021-11-22 19:35:44,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806886835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:44,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:44,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:35:44,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708842039] [2021-11-22 19:35:44,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:44,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:35:44,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:44,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:35:44,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:35:44,208 INFO L87 Difference]: Start difference. First operand 1183 states and 1477 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:44,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:44,394 INFO L93 Difference]: Finished difference Result 1540 states and 1909 transitions. [2021-11-22 19:35:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 19:35:44,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-22 19:35:44,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:44,398 INFO L225 Difference]: With dead ends: 1540 [2021-11-22 19:35:44,398 INFO L226 Difference]: Without dead ends: 1363 [2021-11-22 19:35:44,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:35:44,400 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 109 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:44,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 608 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:35:44,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2021-11-22 19:35:44,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1185. [2021-11-22 19:35:44,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 1173 states have (on average 1.2617220801364024) internal successors, (1480), 1184 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:44,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1480 transitions. [2021-11-22 19:35:44,453 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1480 transitions. Word has length 59 [2021-11-22 19:35:44,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:44,453 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1480 transitions. [2021-11-22 19:35:44,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:44,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1480 transitions. [2021-11-22 19:35:44,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 19:35:44,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:44,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:44,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 19:35:44,455 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:44,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:44,456 INFO L85 PathProgramCache]: Analyzing trace with hash -386734627, now seen corresponding path program 1 times [2021-11-22 19:35:44,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:44,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949584310] [2021-11-22 19:35:44,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:44,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:44,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:44,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949584310] [2021-11-22 19:35:44,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949584310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:44,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:44,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:35:44,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500610873] [2021-11-22 19:35:44,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:44,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:35:44,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:44,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:35:44,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:35:44,607 INFO L87 Difference]: Start difference. First operand 1185 states and 1480 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:44,806 INFO L93 Difference]: Finished difference Result 1571 states and 1952 transitions. [2021-11-22 19:35:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 19:35:44,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-22 19:35:44,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:44,810 INFO L225 Difference]: With dead ends: 1571 [2021-11-22 19:35:44,810 INFO L226 Difference]: Without dead ends: 1393 [2021-11-22 19:35:44,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:35:44,812 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 217 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:44,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 649 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:35:44,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-11-22 19:35:44,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1186. [2021-11-22 19:35:44,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 1174 states have (on average 1.256388415672913) internal successors, (1475), 1185 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:44,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1475 transitions. [2021-11-22 19:35:44,871 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1475 transitions. Word has length 59 [2021-11-22 19:35:44,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:44,871 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 1475 transitions. [2021-11-22 19:35:44,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:44,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1475 transitions. [2021-11-22 19:35:44,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 19:35:44,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:44,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:44,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 19:35:44,874 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:44,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:44,874 INFO L85 PathProgramCache]: Analyzing trace with hash 146753297, now seen corresponding path program 1 times [2021-11-22 19:35:44,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:44,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433302869] [2021-11-22 19:35:44,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:44,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:45,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:45,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433302869] [2021-11-22 19:35:45,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433302869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:45,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:45,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 19:35:45,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023757434] [2021-11-22 19:35:45,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:45,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 19:35:45,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:45,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 19:35:45,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 19:35:45,031 INFO L87 Difference]: Start difference. First operand 1186 states and 1475 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:45,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:45,242 INFO L93 Difference]: Finished difference Result 2565 states and 3199 transitions. [2021-11-22 19:35:45,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 19:35:45,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-22 19:35:45,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:45,247 INFO L225 Difference]: With dead ends: 2565 [2021-11-22 19:35:45,248 INFO L226 Difference]: Without dead ends: 1507 [2021-11-22 19:35:45,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-22 19:35:45,253 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 123 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:45,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 1384 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:35:45,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2021-11-22 19:35:45,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1166. [2021-11-22 19:35:45,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1154 states have (on average 1.2530329289428077) internal successors, (1446), 1165 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:45,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1446 transitions. [2021-11-22 19:35:45,320 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1446 transitions. Word has length 59 [2021-11-22 19:35:45,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:45,320 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 1446 transitions. [2021-11-22 19:35:45,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:45,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1446 transitions. [2021-11-22 19:35:45,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 19:35:45,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:45,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:45,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 19:35:45,325 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:45,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:45,325 INFO L85 PathProgramCache]: Analyzing trace with hash -253324512, now seen corresponding path program 1 times [2021-11-22 19:35:45,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:45,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99403293] [2021-11-22 19:35:45,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:45,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:45,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 19:35:45,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:45,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99403293] [2021-11-22 19:35:45,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99403293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:45,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:45,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 19:35:45,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459126351] [2021-11-22 19:35:45,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:45,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 19:35:45,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:45,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 19:35:45,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-22 19:35:45,706 INFO L87 Difference]: Start difference. First operand 1166 states and 1446 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:46,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:46,471 INFO L93 Difference]: Finished difference Result 1694 states and 2083 transitions. [2021-11-22 19:35:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 19:35:46,471 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-22 19:35:46,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:46,474 INFO L225 Difference]: With dead ends: 1694 [2021-11-22 19:35:46,475 INFO L226 Difference]: Without dead ends: 1136 [2021-11-22 19:35:46,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2021-11-22 19:35:46,476 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 765 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:46,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 993 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 19:35:46,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2021-11-22 19:35:46,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 969. [2021-11-22 19:35:46,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 957 states have (on average 1.250783699059561) internal successors, (1197), 968 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:46,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1197 transitions. [2021-11-22 19:35:46,519 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1197 transitions. Word has length 60 [2021-11-22 19:35:46,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:46,519 INFO L470 AbstractCegarLoop]: Abstraction has 969 states and 1197 transitions. [2021-11-22 19:35:46,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:46,520 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1197 transitions. [2021-11-22 19:35:46,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 19:35:46,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:46,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:46,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 19:35:46,521 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:46,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:46,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1450134909, now seen corresponding path program 1 times [2021-11-22 19:35:46,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:46,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297872732] [2021-11-22 19:35:46,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:46,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:46,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:46,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:46,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297872732] [2021-11-22 19:35:46,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297872732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:46,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:46,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-22 19:35:46,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978727669] [2021-11-22 19:35:46,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:46,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 19:35:46,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:46,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 19:35:46,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-22 19:35:46,930 INFO L87 Difference]: Start difference. First operand 969 states and 1197 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:48,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:48,517 INFO L93 Difference]: Finished difference Result 2153 states and 2616 transitions. [2021-11-22 19:35:48,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-22 19:35:48,517 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 19:35:48,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:48,520 INFO L225 Difference]: With dead ends: 2153 [2021-11-22 19:35:48,521 INFO L226 Difference]: Without dead ends: 1390 [2021-11-22 19:35:48,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=574, Invalid=1406, Unknown=0, NotChecked=0, Total=1980 [2021-11-22 19:35:48,523 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 2075 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:48,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2075 Valid, 1922 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 19:35:48,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2021-11-22 19:35:48,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 904. [2021-11-22 19:35:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 892 states have (on average 1.2376681614349776) internal successors, (1104), 903 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:48,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1104 transitions. [2021-11-22 19:35:48,569 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1104 transitions. Word has length 64 [2021-11-22 19:35:48,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:48,570 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1104 transitions. [2021-11-22 19:35:48,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:48,570 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1104 transitions. [2021-11-22 19:35:48,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 19:35:48,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:48,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:48,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 19:35:48,572 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:48,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:48,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1708300347, now seen corresponding path program 1 times [2021-11-22 19:35:48,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:48,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377181099] [2021-11-22 19:35:48,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:48,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:48,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:48,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377181099] [2021-11-22 19:35:48,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377181099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:48,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:48,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 19:35:48,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754059013] [2021-11-22 19:35:48,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:48,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 19:35:48,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:48,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 19:35:48,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:35:48,817 INFO L87 Difference]: Start difference. First operand 904 states and 1104 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:49,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:49,643 INFO L93 Difference]: Finished difference Result 2676 states and 3254 transitions. [2021-11-22 19:35:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-22 19:35:49,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 19:35:49,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:49,650 INFO L225 Difference]: With dead ends: 2676 [2021-11-22 19:35:49,650 INFO L226 Difference]: Without dead ends: 2172 [2021-11-22 19:35:49,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2021-11-22 19:35:49,652 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 1033 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:49,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1033 Valid, 1480 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 19:35:49,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2021-11-22 19:35:49,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 912. [2021-11-22 19:35:49,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 900 states have (on average 1.2355555555555555) internal successors, (1112), 911 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:49,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1112 transitions. [2021-11-22 19:35:49,723 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1112 transitions. Word has length 64 [2021-11-22 19:35:49,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:49,723 INFO L470 AbstractCegarLoop]: Abstraction has 912 states and 1112 transitions. [2021-11-22 19:35:49,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:49,724 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1112 transitions. [2021-11-22 19:35:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 19:35:49,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:49,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:49,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 19:35:49,725 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:49,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:49,726 INFO L85 PathProgramCache]: Analyzing trace with hash 810907069, now seen corresponding path program 1 times [2021-11-22 19:35:49,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:49,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500694824] [2021-11-22 19:35:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:49,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:50,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:50,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:50,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500694824] [2021-11-22 19:35:50,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500694824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:50,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:50,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 19:35:50,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566876452] [2021-11-22 19:35:50,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:50,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 19:35:50,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:50,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 19:35:50,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-22 19:35:50,006 INFO L87 Difference]: Start difference. First operand 912 states and 1112 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:50,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:50,689 INFO L93 Difference]: Finished difference Result 1401 states and 1700 transitions. [2021-11-22 19:35:50,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 19:35:50,689 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 19:35:50,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:50,693 INFO L225 Difference]: With dead ends: 1401 [2021-11-22 19:35:50,693 INFO L226 Difference]: Without dead ends: 1295 [2021-11-22 19:35:50,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-22 19:35:50,694 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 982 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:50,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 930 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 19:35:50,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2021-11-22 19:35:50,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 904. [2021-11-22 19:35:50,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 892 states have (on average 1.2331838565022422) internal successors, (1100), 903 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:50,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1100 transitions. [2021-11-22 19:35:50,739 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1100 transitions. Word has length 64 [2021-11-22 19:35:50,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:50,739 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1100 transitions. [2021-11-22 19:35:50,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:50,740 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1100 transitions. [2021-11-22 19:35:50,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 19:35:50,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:50,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:50,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 19:35:50,741 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:50,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:50,742 INFO L85 PathProgramCache]: Analyzing trace with hash -880268551, now seen corresponding path program 1 times [2021-11-22 19:35:50,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:50,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599910145] [2021-11-22 19:35:50,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:50,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:51,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:51,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599910145] [2021-11-22 19:35:51,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599910145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:51,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:51,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 19:35:51,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550912826] [2021-11-22 19:35:51,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:51,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 19:35:51,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:51,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 19:35:51,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-22 19:35:51,013 INFO L87 Difference]: Start difference. First operand 904 states and 1100 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:52,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:52,020 INFO L93 Difference]: Finished difference Result 1421 states and 1718 transitions. [2021-11-22 19:35:52,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-22 19:35:52,021 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 19:35:52,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:52,025 INFO L225 Difference]: With dead ends: 1421 [2021-11-22 19:35:52,026 INFO L226 Difference]: Without dead ends: 1315 [2021-11-22 19:35:52,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-11-22 19:35:52,027 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 931 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:52,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [931 Valid, 1140 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 19:35:52,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-11-22 19:35:52,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 904. [2021-11-22 19:35:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 892 states have (on average 1.2298206278026906) internal successors, (1097), 903 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:52,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1097 transitions. [2021-11-22 19:35:52,075 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1097 transitions. Word has length 64 [2021-11-22 19:35:52,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:52,076 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1097 transitions. [2021-11-22 19:35:52,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1097 transitions. [2021-11-22 19:35:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 19:35:52,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:52,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:52,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 19:35:52,078 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:52,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:52,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2141089533, now seen corresponding path program 1 times [2021-11-22 19:35:52,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:52,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979228121] [2021-11-22 19:35:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:52,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:52,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:52,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979228121] [2021-11-22 19:35:52,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979228121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:52,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:52,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 19:35:52,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147097735] [2021-11-22 19:35:52,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:52,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 19:35:52,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:52,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 19:35:52,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-22 19:35:52,438 INFO L87 Difference]: Start difference. First operand 904 states and 1097 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:53,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:53,349 INFO L93 Difference]: Finished difference Result 1590 states and 1920 transitions. [2021-11-22 19:35:53,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 19:35:53,349 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 19:35:53,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:53,352 INFO L225 Difference]: With dead ends: 1590 [2021-11-22 19:35:53,352 INFO L226 Difference]: Without dead ends: 1137 [2021-11-22 19:35:53,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-11-22 19:35:53,353 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 1015 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:53,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 1026 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 19:35:53,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-11-22 19:35:53,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 823. [2021-11-22 19:35:53,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 811 states have (on average 1.2096177558569667) internal successors, (981), 822 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:53,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 981 transitions. [2021-11-22 19:35:53,395 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 981 transitions. Word has length 64 [2021-11-22 19:35:53,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:53,395 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 981 transitions. [2021-11-22 19:35:53,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:53,396 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 981 transitions. [2021-11-22 19:35:53,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 19:35:53,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:53,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:53,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 19:35:53,397 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:53,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:53,398 INFO L85 PathProgramCache]: Analyzing trace with hash 478224562, now seen corresponding path program 1 times [2021-11-22 19:35:53,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:53,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199837151] [2021-11-22 19:35:53,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:53,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:53,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:53,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199837151] [2021-11-22 19:35:53,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199837151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:53,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:53,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 19:35:53,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218035065] [2021-11-22 19:35:53,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:53,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 19:35:53,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:53,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 19:35:53,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:35:53,659 INFO L87 Difference]: Start difference. First operand 823 states and 981 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:54,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:54,245 INFO L93 Difference]: Finished difference Result 1242 states and 1480 transitions. [2021-11-22 19:35:54,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 19:35:54,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-22 19:35:54,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:54,247 INFO L225 Difference]: With dead ends: 1242 [2021-11-22 19:35:54,247 INFO L226 Difference]: Without dead ends: 1133 [2021-11-22 19:35:54,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:35:54,249 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 667 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:54,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 807 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 19:35:54,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-11-22 19:35:54,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 800. [2021-11-22 19:35:54,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 788 states have (on average 1.2081218274111676) internal successors, (952), 799 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 952 transitions. [2021-11-22 19:35:54,291 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 952 transitions. Word has length 66 [2021-11-22 19:35:54,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:54,291 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 952 transitions. [2021-11-22 19:35:54,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:54,292 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 952 transitions. [2021-11-22 19:35:54,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 19:35:54,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:54,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:54,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 19:35:54,294 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:54,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:54,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1809348425, now seen corresponding path program 1 times [2021-11-22 19:35:54,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:54,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938259989] [2021-11-22 19:35:54,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:54,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:54,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:54,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938259989] [2021-11-22 19:35:54,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938259989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:54,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:54,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:35:54,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065943739] [2021-11-22 19:35:54,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:54,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:35:54,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:54,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:35:54,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:35:54,384 INFO L87 Difference]: Start difference. First operand 800 states and 952 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:54,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:54,467 INFO L93 Difference]: Finished difference Result 1068 states and 1266 transitions. [2021-11-22 19:35:54,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 19:35:54,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-22 19:35:54,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:54,468 INFO L225 Difference]: With dead ends: 1068 [2021-11-22 19:35:54,468 INFO L226 Difference]: Without dead ends: 472 [2021-11-22 19:35:54,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:35:54,469 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 29 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:54,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 547 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:35:54,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-22 19:35:54,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 445. [2021-11-22 19:35:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 433 states have (on average 1.207852193995381) internal successors, (523), 444 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 523 transitions. [2021-11-22 19:35:54,494 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 523 transitions. Word has length 67 [2021-11-22 19:35:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:54,494 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 523 transitions. [2021-11-22 19:35:54,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:54,495 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 523 transitions. [2021-11-22 19:35:54,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 19:35:54,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:54,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:54,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-22 19:35:54,496 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:54,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:54,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1604733049, now seen corresponding path program 1 times [2021-11-22 19:35:54,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:54,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521409618] [2021-11-22 19:35:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:54,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:54,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:54,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521409618] [2021-11-22 19:35:54,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521409618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:54,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:54,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 19:35:54,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514680415] [2021-11-22 19:35:54,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:54,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 19:35:54,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:54,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 19:35:54,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:35:54,838 INFO L87 Difference]: Start difference. First operand 445 states and 523 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:55,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:55,972 INFO L93 Difference]: Finished difference Result 789 states and 920 transitions. [2021-11-22 19:35:55,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 19:35:55,972 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-22 19:35:55,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:55,973 INFO L225 Difference]: With dead ends: 789 [2021-11-22 19:35:55,973 INFO L226 Difference]: Without dead ends: 525 [2021-11-22 19:35:55,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2021-11-22 19:35:55,974 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 741 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:55,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 1191 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 19:35:55,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-11-22 19:35:56,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 464. [2021-11-22 19:35:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 452 states have (on average 1.2101769911504425) internal successors, (547), 463 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:56,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 547 transitions. [2021-11-22 19:35:56,010 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 547 transitions. Word has length 67 [2021-11-22 19:35:56,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:56,010 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 547 transitions. [2021-11-22 19:35:56,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:56,010 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 547 transitions. [2021-11-22 19:35:56,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 19:35:56,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:56,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:56,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-22 19:35:56,011 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:56,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:56,012 INFO L85 PathProgramCache]: Analyzing trace with hash -318494985, now seen corresponding path program 1 times [2021-11-22 19:35:56,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:56,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040205323] [2021-11-22 19:35:56,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:56,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:56,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:56,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040205323] [2021-11-22 19:35:56,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040205323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:56,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:56,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 19:35:56,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317469109] [2021-11-22 19:35:56,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:56,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 19:35:56,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:56,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 19:35:56,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-22 19:35:56,581 INFO L87 Difference]: Start difference. First operand 464 states and 547 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:57,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:57,476 INFO L93 Difference]: Finished difference Result 662 states and 752 transitions. [2021-11-22 19:35:57,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 19:35:57,476 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-22 19:35:57,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:57,477 INFO L225 Difference]: With dead ends: 662 [2021-11-22 19:35:57,477 INFO L226 Difference]: Without dead ends: 521 [2021-11-22 19:35:57,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-11-22 19:35:57,478 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 686 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:57,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 1464 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 19:35:57,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-11-22 19:35:57,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 435. [2021-11-22 19:35:57,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 423 states have (on average 1.2033096926713949) internal successors, (509), 434 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:57,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 509 transitions. [2021-11-22 19:35:57,498 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 509 transitions. Word has length 67 [2021-11-22 19:35:57,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:57,498 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 509 transitions. [2021-11-22 19:35:57,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:57,499 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 509 transitions. [2021-11-22 19:35:57,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 19:35:57,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:57,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:57,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-22 19:35:57,500 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:57,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1751505167, now seen corresponding path program 1 times [2021-11-22 19:35:57,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:57,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77608138] [2021-11-22 19:35:57,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:57,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:57,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:57,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77608138] [2021-11-22 19:35:57,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77608138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:57,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:57,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 19:35:57,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145115388] [2021-11-22 19:35:57,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:57,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 19:35:57,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:57,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 19:35:57,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-22 19:35:57,813 INFO L87 Difference]: Start difference. First operand 435 states and 509 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:58,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:58,761 INFO L93 Difference]: Finished difference Result 672 states and 772 transitions. [2021-11-22 19:35:58,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 19:35:58,762 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-22 19:35:58,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:58,762 INFO L225 Difference]: With dead ends: 672 [2021-11-22 19:35:58,763 INFO L226 Difference]: Without dead ends: 598 [2021-11-22 19:35:58,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2021-11-22 19:35:58,763 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 674 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:58,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 1474 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 19:35:58,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-22 19:35:58,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 531. [2021-11-22 19:35:58,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 519 states have (on average 1.1965317919075145) internal successors, (621), 530 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 621 transitions. [2021-11-22 19:35:58,791 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 621 transitions. Word has length 67 [2021-11-22 19:35:58,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:58,792 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 621 transitions. [2021-11-22 19:35:58,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:58,792 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 621 transitions. [2021-11-22 19:35:58,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 19:35:58,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:58,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:58,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-22 19:35:58,793 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:58,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:58,794 INFO L85 PathProgramCache]: Analyzing trace with hash 176767535, now seen corresponding path program 1 times [2021-11-22 19:35:58,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:58,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746345413] [2021-11-22 19:35:58,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:58,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:35:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:35:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:35:59,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:35:59,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746345413] [2021-11-22 19:35:59,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746345413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:35:59,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:35:59,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 19:35:59,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687091407] [2021-11-22 19:35:59,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:35:59,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 19:35:59,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:35:59,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 19:35:59,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-22 19:35:59,058 INFO L87 Difference]: Start difference. First operand 531 states and 621 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:59,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:35:59,945 INFO L93 Difference]: Finished difference Result 567 states and 652 transitions. [2021-11-22 19:35:59,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 19:35:59,945 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-22 19:35:59,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:35:59,946 INFO L225 Difference]: With dead ends: 567 [2021-11-22 19:35:59,946 INFO L226 Difference]: Without dead ends: 539 [2021-11-22 19:35:59,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-11-22 19:35:59,947 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 531 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 19:35:59,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1305 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 19:35:59,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-11-22 19:35:59,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 499. [2021-11-22 19:35:59,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 487 states have (on average 1.2012320328542094) internal successors, (585), 498 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:59,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 585 transitions. [2021-11-22 19:35:59,972 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 585 transitions. Word has length 67 [2021-11-22 19:35:59,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:35:59,972 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 585 transitions. [2021-11-22 19:35:59,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:35:59,973 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 585 transitions. [2021-11-22 19:35:59,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 19:35:59,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:35:59,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:35:59,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-22 19:35:59,975 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:35:59,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:35:59,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1899256550, now seen corresponding path program 1 times [2021-11-22 19:35:59,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:35:59,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155628715] [2021-11-22 19:35:59,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:35:59,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:36:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:36:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:36:00,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:36:00,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155628715] [2021-11-22 19:36:00,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155628715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:36:00,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:36:00,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-22 19:36:00,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120475217] [2021-11-22 19:36:00,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:36:00,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 19:36:00,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:36:00,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 19:36:00,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-22 19:36:00,460 INFO L87 Difference]: Start difference. First operand 499 states and 585 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:01,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:36:01,506 INFO L93 Difference]: Finished difference Result 947 states and 1094 transitions. [2021-11-22 19:36:01,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 19:36:01,507 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-22 19:36:01,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:36:01,508 INFO L225 Difference]: With dead ends: 947 [2021-11-22 19:36:01,508 INFO L226 Difference]: Without dead ends: 856 [2021-11-22 19:36:01,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-11-22 19:36:01,509 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 1362 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 19:36:01,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1362 Valid, 1444 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 19:36:01,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-11-22 19:36:01,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 504. [2021-11-22 19:36:01,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 492 states have (on average 1.2032520325203253) internal successors, (592), 503 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:01,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 592 transitions. [2021-11-22 19:36:01,535 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 592 transitions. Word has length 67 [2021-11-22 19:36:01,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:36:01,536 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 592 transitions. [2021-11-22 19:36:01,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:01,536 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 592 transitions. [2021-11-22 19:36:01,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 19:36:01,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:36:01,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:36:01,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-22 19:36:01,538 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:36:01,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:36:01,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1286424871, now seen corresponding path program 1 times [2021-11-22 19:36:01,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:36:01,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193610269] [2021-11-22 19:36:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:36:01,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:36:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:36:01,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:36:01,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:36:01,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193610269] [2021-11-22 19:36:01,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193610269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:36:01,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:36:01,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-22 19:36:01,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138978889] [2021-11-22 19:36:01,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:36:01,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 19:36:01,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:36:01,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 19:36:01,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-22 19:36:01,992 INFO L87 Difference]: Start difference. First operand 504 states and 592 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:36:02,812 INFO L93 Difference]: Finished difference Result 748 states and 866 transitions. [2021-11-22 19:36:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 19:36:02,813 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-22 19:36:02,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:36:02,813 INFO L225 Difference]: With dead ends: 748 [2021-11-22 19:36:02,814 INFO L226 Difference]: Without dead ends: 494 [2021-11-22 19:36:02,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2021-11-22 19:36:02,814 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 1049 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 19:36:02,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1049 Valid, 1018 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 19:36:02,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-11-22 19:36:02,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 435. [2021-11-22 19:36:02,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 423 states have (on average 1.1962174940898345) internal successors, (506), 434 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:02,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 506 transitions. [2021-11-22 19:36:02,833 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 506 transitions. Word has length 67 [2021-11-22 19:36:02,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:36:02,833 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 506 transitions. [2021-11-22 19:36:02,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:02,833 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 506 transitions. [2021-11-22 19:36:02,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 19:36:02,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:36:02,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:36:02,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-22 19:36:02,834 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:36:02,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:36:02,835 INFO L85 PathProgramCache]: Analyzing trace with hash 738459306, now seen corresponding path program 1 times [2021-11-22 19:36:02,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:36:02,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289417798] [2021-11-22 19:36:02,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:36:02,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:36:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:36:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:36:03,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:36:03,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289417798] [2021-11-22 19:36:03,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289417798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:36:03,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:36:03,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 19:36:03,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854497025] [2021-11-22 19:36:03,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:36:03,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 19:36:03,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:36:03,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 19:36:03,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:36:03,152 INFO L87 Difference]: Start difference. First operand 435 states and 506 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:04,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:36:04,255 INFO L93 Difference]: Finished difference Result 584 states and 655 transitions. [2021-11-22 19:36:04,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-22 19:36:04,256 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-22 19:36:04,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:36:04,256 INFO L225 Difference]: With dead ends: 584 [2021-11-22 19:36:04,256 INFO L226 Difference]: Without dead ends: 533 [2021-11-22 19:36:04,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2021-11-22 19:36:04,257 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 501 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 19:36:04,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 1615 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 19:36:04,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-11-22 19:36:04,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 447. [2021-11-22 19:36:04,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 435 states have (on average 1.1839080459770115) internal successors, (515), 446 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:04,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 515 transitions. [2021-11-22 19:36:04,274 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 515 transitions. Word has length 69 [2021-11-22 19:36:04,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:36:04,275 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 515 transitions. [2021-11-22 19:36:04,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:04,275 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 515 transitions. [2021-11-22 19:36:04,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 19:36:04,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:36:04,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:36:04,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-22 19:36:04,283 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:36:04,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:36:04,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1617345944, now seen corresponding path program 1 times [2021-11-22 19:36:04,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:36:04,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431707725] [2021-11-22 19:36:04,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:36:04,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:36:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:36:04,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:36:04,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:36:04,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431707725] [2021-11-22 19:36:04,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431707725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:36:04,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:36:04,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 19:36:04,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97805688] [2021-11-22 19:36:04,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:36:04,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 19:36:04,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:36:04,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 19:36:04,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-22 19:36:04,612 INFO L87 Difference]: Start difference. First operand 447 states and 515 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:05,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:36:05,156 INFO L93 Difference]: Finished difference Result 809 states and 937 transitions. [2021-11-22 19:36:05,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 19:36:05,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-22 19:36:05,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:36:05,157 INFO L225 Difference]: With dead ends: 809 [2021-11-22 19:36:05,157 INFO L226 Difference]: Without dead ends: 556 [2021-11-22 19:36:05,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-22 19:36:05,158 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 709 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 19:36:05,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 1074 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 19:36:05,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-11-22 19:36:05,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 408. [2021-11-22 19:36:05,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 396 states have (on average 1.1868686868686869) internal successors, (470), 407 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:05,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 470 transitions. [2021-11-22 19:36:05,188 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 470 transitions. Word has length 69 [2021-11-22 19:36:05,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:36:05,188 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 470 transitions. [2021-11-22 19:36:05,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:05,188 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 470 transitions. [2021-11-22 19:36:05,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-22 19:36:05,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:36:05,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:36:05,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-22 19:36:05,192 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:36:05,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:36:05,192 INFO L85 PathProgramCache]: Analyzing trace with hash 181877598, now seen corresponding path program 1 times [2021-11-22 19:36:05,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:36:05,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877499184] [2021-11-22 19:36:05,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:36:05,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:36:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:36:05,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:36:05,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:36:05,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877499184] [2021-11-22 19:36:05,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877499184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:36:05,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:36:05,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-22 19:36:05,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317420466] [2021-11-22 19:36:05,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:36:05,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-22 19:36:05,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:36:05,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-22 19:36:05,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-22 19:36:05,682 INFO L87 Difference]: Start difference. First operand 408 states and 470 transitions. Second operand has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:07,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:36:07,535 INFO L93 Difference]: Finished difference Result 696 states and 771 transitions. [2021-11-22 19:36:07,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-22 19:36:07,535 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-22 19:36:07,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:36:07,536 INFO L225 Difference]: With dead ends: 696 [2021-11-22 19:36:07,536 INFO L226 Difference]: Without dead ends: 617 [2021-11-22 19:36:07,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=426, Invalid=1466, Unknown=0, NotChecked=0, Total=1892 [2021-11-22 19:36:07,537 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 1728 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1728 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:36:07,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1728 Valid, 2703 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-22 19:36:07,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-11-22 19:36:07,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 420. [2021-11-22 19:36:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 408 states have (on average 1.1911764705882353) internal successors, (486), 419 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:07,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 486 transitions. [2021-11-22 19:36:07,562 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 486 transitions. Word has length 70 [2021-11-22 19:36:07,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:36:07,562 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 486 transitions. [2021-11-22 19:36:07,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:07,563 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 486 transitions. [2021-11-22 19:36:07,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-22 19:36:07,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:36:07,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:36:07,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-22 19:36:07,564 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:36:07,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:36:07,565 INFO L85 PathProgramCache]: Analyzing trace with hash 997267312, now seen corresponding path program 1 times [2021-11-22 19:36:07,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:36:07,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080719061] [2021-11-22 19:36:07,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:36:07,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:36:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:36:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:36:08,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:36:08,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080719061] [2021-11-22 19:36:08,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080719061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:36:08,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:36:08,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-22 19:36:08,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872266302] [2021-11-22 19:36:08,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:36:08,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-22 19:36:08,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:36:08,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-22 19:36:08,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-11-22 19:36:08,218 INFO L87 Difference]: Start difference. First operand 420 states and 486 transitions. Second operand has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:09,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:36:09,258 INFO L93 Difference]: Finished difference Result 684 states and 778 transitions. [2021-11-22 19:36:09,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 19:36:09,258 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-22 19:36:09,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:36:09,259 INFO L225 Difference]: With dead ends: 684 [2021-11-22 19:36:09,259 INFO L226 Difference]: Without dead ends: 521 [2021-11-22 19:36:09,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=285, Invalid=645, Unknown=0, NotChecked=0, Total=930 [2021-11-22 19:36:09,260 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 1853 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 19:36:09,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1853 Valid, 1055 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 19:36:09,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-11-22 19:36:09,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 447. [2021-11-22 19:36:09,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 435 states have (on average 1.2) internal successors, (522), 446 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 522 transitions. [2021-11-22 19:36:09,280 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 522 transitions. Word has length 70 [2021-11-22 19:36:09,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:36:09,280 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 522 transitions. [2021-11-22 19:36:09,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:09,280 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 522 transitions. [2021-11-22 19:36:09,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-22 19:36:09,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:36:09,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:36:09,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-22 19:36:09,282 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:36:09,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:36:09,282 INFO L85 PathProgramCache]: Analyzing trace with hash -693908308, now seen corresponding path program 1 times [2021-11-22 19:36:09,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:36:09,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889870761] [2021-11-22 19:36:09,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:36:09,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:36:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:36:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:36:10,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:36:10,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889870761] [2021-11-22 19:36:10,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889870761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:36:10,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:36:10,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 19:36:10,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221152962] [2021-11-22 19:36:10,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:36:10,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 19:36:10,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:36:10,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 19:36:10,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:36:10,157 INFO L87 Difference]: Start difference. First operand 447 states and 522 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:10,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:36:10,985 INFO L93 Difference]: Finished difference Result 652 states and 760 transitions. [2021-11-22 19:36:10,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 19:36:10,986 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-22 19:36:10,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:36:10,987 INFO L225 Difference]: With dead ends: 652 [2021-11-22 19:36:10,987 INFO L226 Difference]: Without dead ends: 580 [2021-11-22 19:36:10,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2021-11-22 19:36:10,987 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 577 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 19:36:10,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 1225 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 19:36:10,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-11-22 19:36:11,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 447. [2021-11-22 19:36:11,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 435 states have (on average 1.1954022988505748) internal successors, (520), 446 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:11,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 520 transitions. [2021-11-22 19:36:11,008 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 520 transitions. Word has length 70 [2021-11-22 19:36:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:36:11,008 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 520 transitions. [2021-11-22 19:36:11,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 520 transitions. [2021-11-22 19:36:11,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-22 19:36:11,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:36:11,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:36:11,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-22 19:36:11,009 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:36:11,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:36:11,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1072461248, now seen corresponding path program 1 times [2021-11-22 19:36:11,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:36:11,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341949341] [2021-11-22 19:36:11,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:36:11,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:36:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:36:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:36:12,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:36:12,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341949341] [2021-11-22 19:36:12,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341949341] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:36:12,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547881459] [2021-11-22 19:36:12,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:36:12,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:36:12,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:36:12,484 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:36:12,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 19:36:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:36:12,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 2762 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-22 19:36:12,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:36:13,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-22 19:36:14,023 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-11-22 19:36:14,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 20 [2021-11-22 19:36:14,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:36:14,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2021-11-22 19:36:14,126 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:36:14,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-22 19:36:14,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-11-22 19:36:14,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2021-11-22 19:36:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:36:14,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 19:36:14,343 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1687 (Array Int Int)) (v_ArrVal_1689 Int)) (let ((.cse0 (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base| v_ArrVal_1687) |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset| v_ArrVal_1689) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset|)))) (<= .cse0 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse0) 18446744073709551616)))))) is different from false [2021-11-22 19:36:14,378 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1687 (Array Int Int)) (|v_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base_5| Int) (v_ArrVal_1689 Int)) (or (let ((.cse0 (select (store (select (store |c_#memory_int| |v_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base_5| v_ArrVal_1687) |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset| v_ArrVal_1689) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset|)))) (<= .cse0 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse0) 18446744073709551616))))) (< (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset|)) |v_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base_5|))) is different from false [2021-11-22 19:36:14,644 WARN L838 $PredicateComparison]: unable to prove that (or |c_ULTIMATE.start_aws_byte_buf_is_valid_#t~short673#1| (forall ((v_ArrVal_1687 (Array Int Int)) (|v_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base_5| Int) (v_ArrVal_1689 Int)) (or (let ((.cse0 (select (store (select (store |c_#memory_int| |v_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base_5| v_ArrVal_1687) |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset| v_ArrVal_1689) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset|)))) (<= .cse0 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse0) 18446744073709551616))))) (< (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset|)) |v_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base_5|)))) is different from false [2021-11-22 19:36:14,663 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 19:36:14,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 86 [2021-11-22 19:36:14,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 97 [2021-11-22 19:36:14,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2021-11-22 19:36:14,720 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 19:36:14,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 68 [2021-11-22 19:36:14,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2021-11-22 19:36:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2021-11-22 19:36:15,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547881459] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 19:36:15,029 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 19:36:15,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 32 [2021-11-22 19:36:15,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520700872] [2021-11-22 19:36:15,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 19:36:15,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-22 19:36:15,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:36:15,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-22 19:36:15,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=723, Unknown=3, NotChecked=168, Total=992 [2021-11-22 19:36:15,031 INFO L87 Difference]: Start difference. First operand 447 states and 520 transitions. Second operand has 32 states, 32 states have (on average 5.5) internal successors, (176), 32 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:15,425 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 16 |c_ULTIMATE.start_aws_byte_buf_is_valid_~buf#1.offset|))) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|)) (.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_is_valid_~buf#1.base|) .cse1))) (and (not (= |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset|)))) (= |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset| 0) (= (select .cse0 .cse1) .cse2) (or |c_ULTIMATE.start_aws_byte_buf_is_valid_#t~short673#1| (forall ((v_ArrVal_1687 (Array Int Int)) (|v_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base_5| Int) (v_ArrVal_1689 Int)) (or (let ((.cse3 (select (store (select (store |c_#memory_int| |v_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base_5| v_ArrVal_1687) |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset| v_ArrVal_1689) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset|)))) (<= .cse3 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse3) 18446744073709551616))))) (< (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset|)) |v_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base_5|)))) (let ((.cse4 (= (mod (select .cse0 (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset|)) 18446744073709551616) 0))) (or (and (not .cse4) (not |c_ULTIMATE.start_aws_byte_buf_is_valid_#t~short673#1|)) (and |c_ULTIMATE.start_aws_byte_buf_is_valid_#t~short673#1| .cse4))) (= |c_ULTIMATE.start_aws_byte_buf_is_valid_~buf#1.offset| 0) (exists ((|ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| Int)) (and (<= |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset|) (< |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| (+ |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset| 1)) (< (+ (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) (+ |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 8)) 1) |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|))) (<= .cse2 (+ (* 18446744073709551616 (div (+ (- 1) .cse2) 18446744073709551616)) 18446744073709551615))))) is different from false [2021-11-22 19:36:15,432 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 16 |c_ULTIMATE.start_aws_byte_buf_is_valid_~buf#1.offset|))) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|)) (.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_is_valid_~buf#1.base|) .cse1))) (and (not (= (mod (select .cse0 (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset|)) 18446744073709551616) 0)) (not (= |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset|)))) (= |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset| 0) (= (select .cse0 .cse1) .cse2) (forall ((v_ArrVal_1687 (Array Int Int)) (|v_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base_5| Int) (v_ArrVal_1689 Int)) (or (let ((.cse3 (select (store (select (store |c_#memory_int| |v_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base_5| v_ArrVal_1687) |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset| v_ArrVal_1689) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset|)))) (<= .cse3 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse3) 18446744073709551616))))) (< (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset|)) |v_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base_5|))) (= |c_ULTIMATE.start_aws_byte_buf_is_valid_~buf#1.offset| 0) (exists ((|ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| Int)) (and (<= |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset|) (< |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| (+ |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset| 1)) (< (+ (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) (+ |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 8)) 1) |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|))) (<= .cse2 (+ (* 18446744073709551616 (div (+ (- 1) .cse2) 18446744073709551616)) 18446744073709551615))))) is different from false [2021-11-22 19:36:15,442 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset|)) 18446744073709551616) 0)) (= |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset| 0) (forall ((v_ArrVal_1687 (Array Int Int)) (|v_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base_5| Int) (v_ArrVal_1689 Int)) (or (let ((.cse0 (select (store (select (store |c_#memory_int| |v_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base_5| v_ArrVal_1687) |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset| v_ArrVal_1689) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset|)))) (<= .cse0 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse0) 18446744073709551616))))) (< (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset|)) |v_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base_5|))) (exists ((|ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| Int)) (and (<= |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset|) (< |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| (+ |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.offset| 1)) (< (+ (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|) (+ |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 8)) 1) |c_ULTIMATE.start_aws_byte_buf_write_~buf#1.base|)))) is different from false [2021-11-22 19:36:16,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:36:16,144 INFO L93 Difference]: Finished difference Result 566 states and 655 transitions. [2021-11-22 19:36:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 19:36:16,144 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.5) internal successors, (176), 32 states have internal predecessors, (176), 0 states have call successors, (0), 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 72 [2021-11-22 19:36:16,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:36:16,146 INFO L225 Difference]: With dead ends: 566 [2021-11-22 19:36:16,146 INFO L226 Difference]: Without dead ends: 467 [2021-11-22 19:36:16,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 128 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=189, Invalid=1235, Unknown=6, NotChecked=462, Total=1892 [2021-11-22 19:36:16,147 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 89 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 2041 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 424 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 19:36:16,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 2041 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 295 Invalid, 0 Unknown, 424 Unchecked, 0.7s Time] [2021-11-22 19:36:16,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-11-22 19:36:16,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 455. [2021-11-22 19:36:16,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 443 states have (on average 1.200902934537246) internal successors, (532), 454 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:16,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 532 transitions. [2021-11-22 19:36:16,187 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 532 transitions. Word has length 72 [2021-11-22 19:36:16,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:36:16,188 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 532 transitions. [2021-11-22 19:36:16,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.5) internal successors, (176), 32 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:36:16,188 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 532 transitions. [2021-11-22 19:36:16,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-22 19:36:16,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:36:16,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:36:16,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 19:36:16,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:36:16,415 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-22 19:36:16,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:36:16,416 INFO L85 PathProgramCache]: Analyzing trace with hash -618714372, now seen corresponding path program 1 times [2021-11-22 19:36:16,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:36:16,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498072735] [2021-11-22 19:36:16,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:36:16,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:36:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:36:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:36:17,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:36:17,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498072735] [2021-11-22 19:36:17,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498072735] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:36:17,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605102704] [2021-11-22 19:36:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:36:17,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:36:17,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:36:17,324 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:36:17,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 19:36:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:36:18,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 83 conjunts are in the unsatisfiable core [2021-11-22 19:36:18,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:36:18,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 19:36:18,709 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:36:18,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-22 19:36:18,859 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-22 19:36:18,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2021-11-22 19:36:18,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-22 19:36:19,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-11-22 19:36:19,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-11-22 19:36:19,515 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:36:19,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 30 [2021-11-22 19:36:19,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:36:19,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2021-11-22 19:36:19,700 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 19:36:19,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 34 Killed by 15